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Ooops...broken cooktop

Cracked Ceramic Cooktop

A common question is, “What should I do now, my ceramic cooktop is broken?”  Accidents happen like dropping something from high up on to the glass.  Or maybe you are not sure what caused it to break…a topic for later.

The material in your cooktop is quite strong, but it is not tempered or “safety glass.”  

Safety glass  is a heat strengthened material, meaning the manufacturer processes the glass in such a way to add considerable compression force to the exterior surface of the glass.  Once that compression area is penetrated, the glass will shatter into numerous small pieces without any other provocation.  We’ve all seen this in car doors and rear windows, especially after some kid accidentally shoots it with a  bb gun…(I may have done that as a kid…”sorry Dad!”  But look at the career it started!)  The “safety” in safety glass comes from the strength that is  added with this process and with the safe, small pieces generated after it breaks.

Glass-ceramic which is used for cooktops is not “safety” glass, but ceramic.  It is a strong but still brittle material and can not be heat treated to add more strength.  So the manufacturers and safety agencies rely on the natural strength of this material.  But, it can break just like all glass and ceramics, notably in an abuse situation like sitting on one edge, dropping something from high, etc.

If accidents happen, then what should you do?  Some will just ignore the break and continue to use it.  The concern here is the electrical hazard.  The cooktop assembly is sealed to prevent spilled liquids from coming into contact the 220 Volt circuitry underneath .  A cracked glass-ceramic combined with liquid could create an electrical conduction from the components inside to you and cause electrocution.  Not something to take lightly and know the manufacturers and agencies like UL and CSA take it seriously.

To get support for a broken cooktop, best is to get a certified technician to replace it.

Many want to try to repair on their own.  It’s possible, but keep in mind some important points.

  1. The glass-ceramic panel is part of a SYSTEM.  You can not and should not try to replace just the glass.  First, no one will sell you just the ceramic-glass.  It is not for sale individually due to safety reasons, mainly the reason stated above…it is part of a sealed system.  Poorly swapping out just the glass is now a liability.  So, you have to purchase the glass installed in the frame, or on a frame support. This you could swap out yourself if you are the mechanically inclined type.  Believe it or not, the entire system is regulated by UL or some agency, down to the screws and adhesives…all for safety.  If you plan to fix it yourself, plan on the cost of the package.
  2. The glass-ceramic manufacturer can not sell you just the glass as a replacement, just as the actual car window manufacturers do not sell your car windows directly.  Too much inventory for the glass manufacturer when they make these parts is huge quantities.  So, they don’t keep the specific designs on hand nor are they allowed to sell it to you if they did.

  3. Wiring madness:  Some replacement cooktops systems have the heating elements attached to the frame, others have the heating elements separately below (as in this picture) I’ve changed mine out before with all the wires attached.  SO MANY WIRES!  My advice, take a picture, use some tape and a marker to identify which wire goes where before you disconnect!  It’s pretty hard to sort them out without some reference afterward if you didn’t.
  4. If you are looking for replacement cooktop, know that it’s expensive.  It hurts the wallet, but the appliance manufacturers are storing large components for a very long time and that costs money.  I expect there’s a decent markup too, but ultimately you are paying for these things to sit in a warehouse for some time.  Try the appliance manufacturers or Marcone, or an online search for the parts you need.  You’ll need a model and serial number for parts.  

    Received a call recently from someone who broke their cooktop after 27 years!!!  Long live that cooktop, but they really just wanted to replace the glass.  I’m sure that design is no longer in storage anywhere even if they could replace only the glass.

    For ovens, the model and serial number are inside the oven cavity, inside the door.  Local shops will also be able to these parts for you.  Sadly, sometimes it’s preferred to buy a whole new system rather than just the cooking surface.

Good luck.  Work safe.  Lastly, if your cracked ceramic cooktop is not the fault of an “accident” but just appeared…take a picture even if under warranty.  Should the cooktop break the exact same way again, you have a nice history to make reference too.  Every break tells a story.  This is helpful to the manufacturers too, should they ever get the information.

By the way, this piece of glass-ceramic was broken with the can pictured.  It took 5 drops from about 8 feet to break it.  Note the damage to the can!  The can was about 1 pound.  The Underwriters Laboratory (UL) test requirement is 1.18 pound steel ball from about 20 inches.  The can is somewhat more forgiving.)

 

 

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95 Responses to “Cracked Ceramic Cooktop”

  1. Lu Ta May 9, 2015 at 12:17 am #

    Thanks Ted. I replaced a broken induction cooktop with a new ceramic glass cooktop. it fits nicely in the hole with all for edges supported by my granite. I then realized that there is nothing underneath holding it up, just the 4 edges 1 inch overlap the rims. My question whether the glass is strong enough to hold a few large pots full of water. Do you know. My cooktop is Frigidaire Gallery 30” Induction Cooktop

    • Ted Wegert May 11, 2015 at 9:23 pm #

      You’re welcome…glad someone reading and finding some help here.

      The glass-ceramic is quite strong, but not designed to be a supporting factor in your countertop cooktop. What is designed for this load, is the metal framing underneath. I’m not completely familiar with your design, but there should be a metal lip under the glass, recessed back few millimeters, that the cooktop structure is resting on. So no worries, the engineers designing this model probably took this into consideration already. Problems with cracking or breaking a corner or edge would be the result of incorrect installation possibly missing this lip. Hope this helps. The installer should also put a small rubber gasket under the glass edge…again, not familiar with this specific design, but this usually comes in the box and installed by the technician. This makes a good gasket to prevent spills from reaching the insides. See installation and user manual for details.

      Ted

    • Michele December 7, 2016 at 6:49 pm #

      Last night I was cooking with one one burner, and put the hot lid onto the cook top side I was not using. Maybe 3 or 4 mins later there was a huge bang, like a gun had gone off, and there was a huge crack under the lid. The crack is huge, it runs kitty corner all the way diagonally across the stove! The stove is only 3 yrs old, but past warranty 🙁 I called Whirlpool, but was told that putting anything hot on the stove can cause it to break. This seems ludicrous to me. Any advice??

      • Ted Wegert January 5, 2017 at 1:43 am #

        What? Wow. I don’t know the specifics of your interaction, but glass-ceramic is meant to handle hot things!

      • Ted Wegert January 5, 2017 at 2:01 am #

        …another thought, the lid may have made a vacuum as it cooled. The hot air under the lid begins to cool, shrinks, then puts an odd force on the glass from above. Maybe? But the amount of force would be difficult to generate. Would be a good one for Myth Busters.

      • Simon March 16, 2017 at 7:37 pm #

        I would say the cause of this crack was not the heat, but the vacuum created by the lid, when the gas inside cooled down. mechanical failure…

  2. Tas Economou November 18, 2015 at 5:14 pm #

    Hi..have ceramic Thermador 5 burner cook top. Cat knocked over a vase that fell on cook top and chipped the top edge, along the edge…about 20mm long and 4mm wide. Is there a service I can hire to repair this?

    • Ted Wegert November 19, 2015 at 2:59 am #

      Best solution is to call Thermador for a service tech; however, I’m sure there are qualified tech’s around who can help you out. If in doubt, contact your local appliance parts store and ask them for a recommendation. If the crack is all the way through, be careful with spills leaking through.

  3. Diane Galemmo November 27, 2015 at 5:35 pm #

    My ceramic glass cooktop is cracked on the left side. Can I cover up the left side,or use glass glue,and continue to use the right side?

    • Ted Wegert December 7, 2015 at 12:15 am #

      In general…you can’t fix a crack. You can try to seal it up, but only RTV-silicones work at even moderate temperatures (less than 400 F) and it’s not possible to squeeze the glue into the crack. “Glass glues” are meant for room temperature applications. Key thing is to be careful that any big spill might actually let liquid reach the electrical components and voltage through the crack. Be careful.

      • Diane Galemmo December 7, 2015 at 12:50 am #

        Thank you. I don’t think the left side can reach the right side since it ends at the end of the cooktop. So do you think it is safe to use the right side?

      • Ted Wegert December 7, 2015 at 2:11 am #

        Well, nothing is functionally different about the cooking performance of the cooktop when the glass breaks in one spot. I doubt it will break more from the heat of cooking, but the panel is slightly more likely to break further with any weight or stress on that region. The issue is all safety and less functional concerns; electrical & mechanical safety. The glass-ceramic is generally more sharp when it breaks than normal glass. I’m not really informed on the extent of the breakage and have to suggest the safest route. So, you have to use your best judgement.

        Yes, it will still power up, heat, and cook the same.

  4. Richard December 2, 2015 at 4:14 pm #

    HI,
    I just bought new double oven range with the ceramic top. It has a ” bowtie ” between two burners. Measures top to bottom burner 17 1/2” and 7″ side to side. Because of the bowtie I would like to use a griddle, but the Manufacturer say’s you should never go beyond 1 inch of the burners. If I do, what could happen to my stovetop(crack)? I saw griddle that measures 21 by 12 inches. The overlap is there. Can I use this griddle safely with out worries of my ceramic stove top? Thank you!

  5. mike pod January 6, 2016 at 7:29 pm #

    Ted,
    My wife and I have replaced our glass top electric range with a gas stove, and we already miss the extra counter top space the old stove provided. I want to obtain two side-by-side glass ceramic panels to sit on the gas burners when we aren’t using them, just in case a burner did get turned on. I read above that I am not allowed to purchase such glass??? How do they control it? Do you have any suggestions for buying a couple of these panlels? (Like…from a Canadian or something? Black market glass panels????
    Many thanks,
    Mike

    • Ted Wegert January 8, 2016 at 3:43 pm #

      Hi Mike,

      Thanks for the inquiry. The dark glass-ceramic is not so much “controlled” as it is simply not for sale by any distributor. There are so many cooktop models over the years from various OEM’s and each have a different decoration pattern, so it’s not good business sense to stock each one.

      If you simply want glass-ceramic, you could try the clear material used for fireplaces. This would be clear and decoration free. To put this on your gas burners might work, at least the material would survive any accidental heat from the burners. My concern would be improper combustion of the gas should you turn it on accidentally. I’m not a combustion expert but concerns would be too much carbon monoxide produced or flame bursting around the edges of the glass-ceramic uncontrollably.

      For sources of this glass-ceramic, try:

      http://www.tecniglas.com/robaxforfireplace/fireplacereplacement.html (Canadian…haha)
      or

      http://www.mcmaster.com/#glass-ceramic/=10ld6fy

      Ted

  6. Deb Lendach February 5, 2016 at 3:19 pm #

    Hi,
    We have a GE black Profile ceramic cooktop (7yrs. old.)
    We dropped a plate and the bottom left corner chipped off.
    About 1 inch by 1/2 inch…triangle shape.
    Can this be repaired or covered with corner pieces? What
    should we do?? Thank you.

    • Ted Wegert March 16, 2016 at 2:03 am #

      Sorry…Those breaks can’t really, or safely be fixed. Meaning, it’s cracked and will stay cracked. The safety concern is spilled water reaching the electrical stuff underneath. I’ve known people to keep using it, but not really advised. If you can seal it completely, maybe, but it won’t be pretty and I doubt UL would approved. Be careful.

  7. Lila Najar February 24, 2016 at 1:11 pm #

    Ted, we bought a glass cook top, I noticed a small scratch, I didn’t say anything because it was so small, after a month I noticed it got bigger TO MY SUPRISE IT WAS ACTUILLY A CRACK! The store where we bought it will not take it back and they will not honar the warranty. I started looking a little closer and found more small cracks. Help we have only had it for over a month.

    • Ted Wegert March 16, 2016 at 1:59 am #

      Sorry to hear about this. Without really looking at the glass fracture, I can only offer you some clarity on the material. Glass, and any brittle material does not like to be in tension. So small cracks occasionally grow, and they are growing because the material is under a small tension or stress. BIG tension, means the panel broke into many pieces. Your car window is a good example. A rock chips the panel, then it slowly grows over time due to small stresses and moisture working on the chip.

      The intension is these cooktops are designed so that the entire panel is not under any real tonsil stress. In your case, the tension could come from underneath, i.e the original assembled manufactured state, or the installation inside your kitchen. My range has that potential because it can rest the range on the edge of my countertop…therefore tension. The other case is tension on the glass caused from above, like someone sitting on the edge, or the glass is tucked under the countertop, etc. Free standing cooktops with a metal frame all the way around

      Maybe this will help you figure out the source. If you can tell if the broken piece pops up from the surface or goes lower than the rest of the surface, this can indicate the direction of the force pushing on it. In these cases, the assumption is often that a consumer misused the appliance. That said, be nice and try to talk to the customer service people, and explain what you see.

  8. Rachel March 17, 2016 at 12:00 am #

    Hi, Ted.
    As an old headache, I broke my glass top by dropping a jar. I did purchase a OEM part from states paying 114$ of courier. Unluckily, it is not the same unit besides the size.

    You may not imagine how impossible to find the part from LG service department in Canada.

    So I’ considering if I can switch only the flat glass boards by taking them out of the frames , and sit the new glass board into the old frame unit.

    According to you, is it possible to separate the glass board safely and adhere it by certain specific glue?

    • Ted Wegert April 6, 2016 at 9:39 pm #

      Hi Rachel,

      If the glass panel is a direct match on size, it’s possible. The industry uses RTV silicones that bond well to the glass but more importantly to whatever the glass is glued to, i.e. stainless, aluminum, etc. Each model is different, therefore possibly different glues. So, the average hardware salesman will not know which silicones stick well to which substrate under these high temperature cooking conditions. You could try a high temperature high viscosity RTV silicone and hope it works. If you do, make sure everything you are bonding to is well cleaned with a solvent, and know there are risks that you didn’t find the right glue. If you do not, the panel may separate or you might not make a water tight seal! This is where the service tech pays off by providing an already adhered panel. Good luck.
      T

  9. Cindy Gifford March 17, 2016 at 7:05 pm #

    Hi Ted, I have a slide-in electric Jenn Air Range with a glass cooktop. It has a middle downdraft vent and I temporarily removed the vent cover and a tray dropped, hit the edge of the opening and left about a 10-inch crack across the small upper right burner and another 2-inch crack extending from the same impact point. Since the burner is small, I do not use it often and have not used it since, but have cooked on the others. So now after reading all your great information, I figure it is not safe. 2 questions: 1-Can I still use the other 3 burners or at least the other 2 on the opposite side of the vent since liquid may not go across to that crack because of the vent? 2-It sounds like replacing a top is not an option, let alone one on a range. So would I have to buy an entire new downdraft range? What do you think is the best thing for me to do? I am hoping for not a huge expense, but thinking that may not be possible. Thank you.

    • Ted Wegert April 6, 2016 at 9:30 pm #

      Hi Cindy,

      Replacing it is the safest. But, the cooktop will still heat up and cook like normal…it doesn’t know it’s broken. With a cracked cooktop, it is definitely already weak. Spills are a concern for electrical hazard as mentioned.

      You should be able to have just the glass replaced by a technician. (sorry it won’t be cheap) You can call the manufacturer and ask, or check with local appliance repair in your area.

      Sorry about the accident.
      T

      • Cindy Gifford April 7, 2016 at 1:35 am #

        Thank you very much Ted. Yes, I did what you recommended and now I have a new cooktop on order. It cost $338.12 for the actual cooktop and the technician gave me a total cost estimate of $549.19 which includes the cooktop, shipping, labor and tax. Oh well, it is less expensive than buying the whole range at least.
        Thanks again! Cindy

  10. Nickie Ostrander March 24, 2016 at 10:10 pm #

    Hi Ted,
    I have a black electric General Electric glass top stove. The largest burner is 8″. Can I use my heavy 11″ straight bottom stainless steel chicken fryer and even heavier enamel cast iron 11″ 6qt. Dutch oven pot safely on it?

    • Ted Wegert April 6, 2016 at 9:26 pm #

      Hi Nickie,

      It’s not ideal, but should be fine. The 11″ pan on 8″ burner, is not good for cooking performance, but it’s all you have right? Just make sure the pan is flat and making good contact and know the pan will be cooler around the edges.

      As for the weight, just don’t drop it on the panel. Six quarts is only about 12 lbs + the cast iron pot weight…that should be fine.
      Ted

  11. Ernest Peterson April 6, 2016 at 1:42 am #

    I inadvertently turned the wrong burner on high which had an empty porcelain enamel tea pot on it and it fused to the Jenn Air downdraft cooktop (touch controls). It resulted in a 1 1/2 inch by 1 1/2 inch partial thickness crater. The generally circular crater is irregular but is all smooth and probably about 1 1/16 inch deep, with no apparent full thickness damage. Is it safe to use that burner? If not, is it safe to use the other burners, only? If it is safe can it be cosmetically improved? If it is unsafe, do I have to buy a whole new cooktop or can a less expensive part be installed? Lots of questions, Thanks

    • Ted Wegert April 6, 2016 at 9:20 pm #

      Hi Ernest,

      Yikes. Sorry about the accident. Porcelain melts at much lower temperatures compared to glass-ceramic. The burner will heat this area of your cooktop to ~600ºC/1100ºF.

      As for the damage, this is usually only a removal of the top surface of the glass-ceramic, not all the way through. The panel will be weaker here, but no change to the performance. If it’s still solid and no cracks, it’s fine to use.

      Because of the high temperature and low thermal expansion of the cooktop, I don’t know of anything material which can fill this area and make it smooth again! I would love to know and put to use anything that can survive.

      Ted

      • Scott Schoenfeld February 8, 2017 at 3:22 am #

        Ted,

        Thanks for this blog. Really great information, as our Bosch cooktop suffered the same overheated empty porcelain teapot induced fate as Ernest.

        For cosmetic damage like this, could a possible solution be the same clear material and process used to repair windshield chips? Assuming you could get one from a reputable company who would perform the procedure, and assuming it would stand up to the heat produced by the burner, could it work?

        Thanks,
        Scott

      • Ted Wegert February 19, 2017 at 6:35 pm #

        Hi Scott…I think it’s time I make a post about this windshield repair solution to show what it does…it burns and stinks. I wouldn’t do it.

        T

  12. Jose April 6, 2016 at 7:32 pm #

    Dear Ted, First of all, thanks for your article, it is really interesting. I have a tricky question that I do not know if you have addressed before: can a hob crack without being subject to stress or dropping anything on it (heat, age, use, age, etc…) ? We only use it for cooking under normal conditions (no excessive heat), one day a crack appeared in the side and it has extended but we are certain nothing fell on it. As we live in a rented flat, now we are wondering what might have caused this. A few months ago, somebody came to replace the fridge, they left frozen food over the hob which defrosted and -we think- went under the hob (as it it not properly sealed under the hob’s glass), thus, we are wondering if this could have caused this? Water going under the hob glass and affecting something underneath it? I would appreciate any information you could provide us. Thanks!

    • Ted Wegert April 6, 2016 at 9:12 pm #

      Hi Jose,

      Thanks for the inquiry. It takes some sort of stress to break a panel of glass or ceramic. It could be a thermal related, but this is rare with this material. The panel would have to be over temperature for some time, which will force the material to change in property. If for instance the material was very old, or the thermal limiter inside the heater did not function correctly, or if routinely very poor cookware was used, then the glass-ceramic could age by being too hot. The limiter is supposed to control this but it can only measure one line across the heater. IF this occurs, then it will break inside the burner area, and while the panel cools. In this case, the material is changing due to excessive temperatures.

      A small line crack across the panel generally suggests some mechanical stress, not thermal.

      Not sure about water going under the panel. It should not cause a crack, just electrical issues.

      But, a cold item on a hot glass-ceramic hob…no problem. It was designed to take these differences in temperature. Think Pyrex® on steroids.

      Ted

  13. terry April 12, 2016 at 8:54 am #

    My cook top glass is lifting up from the stainless frame ..How can I fix this ..?? Thanks Terry

    • Ted Wegert April 19, 2016 at 2:38 am #

      Hi Terry,

      Yikes…that’s a problem! If it’s still under warranty, then call the manufacturer. I’d say regardless…call the manufacturer. My immediate thought: the stainless either was not clean enough and the RTV silicone didn’t bond well. After time and pressure of a piece of metal with some “memory” from forming, the seal gave way.

      If you are trying to fix it, then you would need to start with a really clean surface on both the metal and the glass. (first…unplug the unit) Clean with a solvent of some kind. Then use a hardy silicone. The stuff used by manufacturers is purchased in bulk from various companies and unique to this manufacturing, so not easy to get for a consumer. Best available option is DOW 732. http://www.amazon.com/Dow-Corning-1892011-Multi-Purpose-Sealant/dp/B00O6JCPEU/ref=sr_1_1?ie=UTF8&qid=1461033212&sr=8-1&keywords=dow+732+black

      Sounds like you will have to weigh the glass down to make the seal and let it cure. If true…not the best option as it might just do it again. A lost seal is not safe, as mentioned before. I’d still call the manufacturer unless it’s really old. Be safe.

      Ted

  14. Kelly April 28, 2016 at 9:35 pm #

    Hi !! So first time stove breaker ! I dropped a glass bowl and didn’t crack it I broke it there is a hole and shatter marks. You don’t even want to see the pictures . My question and may be it stupid but can I use the oven still ? I was literally about to cook bacon in it and I’m still wanting to lol
    Great article byw

    • Ted Wegert May 4, 2016 at 1:23 am #

      Hopefully you worked this out by now, but yes, you should be able to use the oven until the top is fixed. Just don’t spill fluids into the cooktop and get the top fixed asap.

      • Kelly May 4, 2016 at 1:45 am #

        Still working on it !
        Have used oven. Needed bacon 😉
        So far ok
        It’s been a journey

  15. Jeffrey May 16, 2016 at 4:20 am #

    Hi Ted,

    Very cool (hot) article and interesting comment thread. I’ll add my ordeal to the mix. 🙂

    We hired a handyman to install a range hood and he accidentally stepped too hard on the glass cooktop and broke it: a chip came out and a large spider web fracture pattern formed that covers three of the four burners. Since he was giving us a good deal on the job and we have a home warranty that came with the house we bought a few months ago, we told him we’d just make a claim with the home warranty and he’d just comp us the service fee.

    Little did we know, but should have guessed, that they would deny coverage because it’s not a “mechanical” problem. The appliance manual states multiple times it’s not safe to use with a broken glass cooktop (mainly shock risk as you said). I can just imagine the lawsuit from the family that gets electrocuted because their HW wouldn’t fix a “cosmetic” issue and they couldn’t afford a new unit.

    Anyway, I was wondering if you could tell us if/how we could safely turn this “cosmetic” problem into a “mechanical” (electrical?) problem which means they will have to replace the cooktop.

    Of course we can go back to the handyman and ask him to pay the full price of the replacement part ($320), but the HW’s disregard for appliance safety makes me want THEM to pay.

    • Ted Wegert May 16, 2016 at 12:50 pm #

      Interesting…First, I would never sit or stand on one of these. The handyman should know better. Just move the unit out of the way to install a hood! Yes, the material is strong, but certainly not designed for the weight of the average person. Most “handymen” are generally bigger than a full pan of water, even canning pots. Then, when it breaks this stuff is scary sharp and when your leg or backside go through it??? ouch.

      Not sure I can really help changing it from cosmetic to mechanical/electrical dilemma. Technically you now have exposed wires inside the cooktop (now outside because of broken glass). Exposed, open circuits, could be covered.

      Good luck. Stay safe.

  16. Vic May 17, 2016 at 11:14 pm #

    Ted, I appreciate you answering questions on here. Thank you.

    I’ve noticed that a lot of older models of cooktops had metal frames that wrapped up and around the edges of the glass. It seems like most modern cooktops have the metal frame underneath the glass only. Do you feel this makes modern cooktops more prone to cracking? I try searching for ones with a metal frame all the way around and above the glass, but I just cannot find any. They are all just glass slabs now.

    The reason I bring this up is because I have replaced a cooktop in a tenants home with a newer model just 6 months ago. It has already cracked across a corner. I don’t think these new “glass slab” cooktops are protected enough. The manufacturer won’t do anything because they say it isn’t due to thermal shock or defect. So I have no idea what to replace my tenants cracked cooktop with.

    Do you know of any newer models with the metal frame all around? Are the metal frames available separately? I defer to your expertise,

    Thank you Ted

    • Ted Wegert September 9, 2016 at 8:23 pm #

      Hi Vic,

      Late reply but good question. The frames of old are less trendy now for aesthetic reasons. These models have the frame underneath. It still requires the same control on the frame flatness, either on the sides or underneath, so the glass always stays flat. This is a manufacturing requirement. Not bending the glass, either with the installation of the glass in to, or on to, a frame by the manufacturer is critical. Next, is the installation into the home. Open/exposed edges can be caught on a countertop, or used to support the cooktop instead of the recessed metal frame underneath. This is bad…glass is never to be a support…unless it’s laminated like the the Grand Canyon Skywalk on the west rim!

      So is a frameless design worse? It’s just different and the frameless models require some additional expertise on the installation because the support frame is not as noticeable. Done correctly by the manufacturer and the installer, it should be fine.

      I don’t really keep up with the specific designs available by each OEM…sorry.

      Ted

  17. Nuno June 11, 2016 at 11:55 am #

    Hi, changing my kitchen my glass hob got separated from the electric base when I pulled it, is it necessary a special glue for these or any double tape will work?
    thanks

    • Ted Wegert September 7, 2016 at 7:17 pm #

      Special glue. Double sided tape will not seal properly and you want a moisture barrier.

  18. Jerry Steinberg June 13, 2016 at 7:30 pm #

    Hi Ted,
    We just noticed a hairline linear crack running across the front left corner of our GE Profile cooktop. It is not in contact with the heating area closest to it(front left “burner”). Is there a way to seal, or repair that type of crack safely.
    Jerry

    • Ted Wegert September 7, 2016 at 7:15 pm #

      Hi Jerry,
      Sorry for slow answer and you’ve probably already figured this out…but no. An RTV sealant may work for the surface but will probably be removed over cleaning exposure. An epoxy of sorts may also work for a brief time, but look ugly and eventually fail for the same reasons.

      Sorry.

  19. Carolyn June 19, 2016 at 2:08 am #

    I am so sad. I love my GE ceramic oven/range. I was using the oven, and dropped a 1 cup metal measuring cup from approximately 6 – 8 inches as it was wet and dropped from my hands. The only thing I could think was the spout of the cup must have hit the top. It was on the lower right corner and the crack spread to the left upper corner. My black cloud has been here all day. Can we safely use the lower left burner until we can fix it? Also, it is an older model, over 10 years. Would it pay to replace it? I am so mad at myself because it has been my favorite range. My husband wants the old ones with the elements on top. I hate those and would rather have gas than that.

    • Ted Wegert September 7, 2016 at 2:01 pm #

      Sorry for the slow response on your problem as you probably already replaced it.

      Yes, sounds like the pointed impact may have been more severe than “normal.” “Safely” use the other burners? Sure they all will power on fine, but know and be cautious that any spills are dangerous and excessive weight may drop the glass further. That’s a risk and not something I would endorse. If you do, be extra cautious and fix it quick. That is the circumstance that Underwriters Laboratory would deem unsafe for consumers.

  20. Nikeille Gee July 26, 2016 at 9:22 am #

    hej ted,

    i recently slammed a heavy chopping board in the glass cooktop. theres no crack or something but im just worried if it might cause electrical problems beneath? seeking for your advice. thank you! 🙂

    • Ted Wegert September 7, 2016 at 1:53 pm #

      Hi,…no crack no foul! The material and hopefully the design of the entire system were designed to withstand some impacts. The stuff underneath, electrical connections and such, should be fine!

      Here are some basic tests the cooktop is designed to withstand: http://blog.us.schott.com/how-your-glass-ceramic-cooktop-is-tested/

  21. Sherry Flashman September 7, 2016 at 5:15 am #

    I got a small chi/crack right at the edge of my Frigidaire ceramic glass stovetop. It’s not a hair crack but a small piece broke off. Not at the burner but in between. So i was looking at ideas for a small patch. It’s not a fine crack running along the top surface. read your reference to RTV silicones. Couldl that be used toclose up that side chipped area –1/4 in? . I don’t think that section even gets hot, but I should check. I’ve read all the other posts and see you say fixing is pretty tough. But this is not surface crack lines but a chipped edge.

    • Ted Wegert September 7, 2016 at 1:29 pm #

      RTV silicone is really soft. You could certainly try it as it is harmless. You just need to clean the area well, probably with some alcohol first. If it is too shallow, it may not stick well…but trying will not hurt anything. RTV is just a sealant made of silicone.

      It seems odd to have only one small chip in the center. Use a strong flashlight to light up the area from the side and see if you really do have a crack or just a chip.

      Good luck.

  22. Helen Shields October 13, 2016 at 4:19 am #

    I have a small chip on the edge of my Whirlpool glass top. I dropped a glass lid right on the edge. What do you suggest? Helen

    • Ted Wegert November 8, 2016 at 4:45 pm #

      Small chip near an edge probably won’t cause any issues. Just cosmetic.

  23. Carrie October 21, 2016 at 4:20 pm #

    I placed my teflon coated skillet on a cold burner, turned the burner on 7, added butter to the skillet, then heard a loud POP. All of this within 15 seconds of turning the burner on….. Looking under the skillet, I saw that the glass surface had cracked (looks like a chicken foot pattern). NOT HAPPY!!! Was it something I did?? I’ve cooked this way for 20 years on ceramic cook tops.

    • Ted Wegert November 8, 2016 at 4:44 pm #

      no…it was probably not something you did. Glass-ceramic, the type used for cooktops, can’t really break due to heat. However, everything else in the cooktop can expand and move. Was the cooktop new or an old one? Can you send pictures? Did the cookware change shape after this event?

  24. Baz October 23, 2016 at 2:10 pm #

    Hi Ted

    I have a cracked glass top – I have no idea how it happened. The crack goes from bottom right corner in a straight line to the top left corner. I never dropped anything on it?? The only thing I can think happened was putting a hot ceramic dish on it directly from the oven caused it to crack. The problem is I rent the accomondation and I don’t want them to think I broke it by being careless. Any advise would be much appreciated.

    • Ted Wegert November 8, 2016 at 4:31 pm #

      Sorry…you can’t really fix a crack except to replace it. Only way to truly understand how it happened is to review the glass pieces. You could send me a picture…this maybe a start, but we would only be trying to figure out why it happened.

  25. Brenda October 26, 2016 at 12:04 am #

    I have a portable new wave cook top. It was dropped and now has a crack right down the middle. Can I use electrical tape to repair it? The unit still works it heat up just fine. Will the electrical tape burn?

    • Ted Wegert November 8, 2016 at 4:29 pm #

      No. Well you could, but yes the tape will melt and it will not be safe. So, I would not. Sorry

  26. Alan October 27, 2016 at 12:44 am #

    Ted,
    I just had my jenn-air cooktop replaced because of a crack that began on one edge. The edges sit on the granite counter-top. Are there any lips that one can buy to protect the edges? This would make sense because the edges are most vulnerable.
    Thanks,
    Al

    • Ted Wegert November 8, 2016 at 4:28 pm #

      Hi Al,

      You could add a foam, neoprene gasket under the surface or some silicone. The key is NOT to put something too thick or rigid under the edge. This could force the glass to not be flat or bend the edge…causing it to break in the longterm. If you are trying to protect the edge, a “C” shape gasket might also work. It may not look nice. Just make sure you don’t add any force to bottom of the glass by using a gasket which is too hard or thick.

      Ted

  27. Mel November 3, 2016 at 1:12 pm #

    Hi, my daughter has a Firenzi oven hob that is ruined, not just a crack but a ceramic dish was dropped on it and now it can not be used, they don’t have lots of money and have discovered Firenzi is now not trading. Can they choose any hob from a shop and have just the hob replaced or is it not that simple. Is the job and oven connected?

    • Ted Wegert November 8, 2016 at 4:13 pm #

      Hi…It’s not really that simple. Yes, the glass-ceramic could be swapped if you can find a panel. However, attachment and the rest of the system are not so easy to interchange. It’s most difficult to disassemble and replace just the panel, then reassemble again safely. This is why most replacement products include framing and possibly heaters. The glass-ceramic top will probably not look correct and typically the glass-ceramic by itself can not be purchased directly. This material is typically only sold to appliance manufacturers.

  28. Sunshine November 13, 2016 at 3:59 pm #

    Hi Ted, I just noticed a small chip in the glass of our stove top. It is on the burner, but isn’t much bigger than a pencil eraser. Can we still use the burner? The stove is a Whirpool. Not sure if that matters.

    • Ted Wegert November 22, 2016 at 7:58 pm #

      Small chips, no problem. But if it’s new, get it fixed as it will grow to a crack that needs replacing under weight and movement. Ted

  29. Sohaib November 20, 2016 at 8:58 am #

    Hi Ted,
    Last night my mom was preparing a desert on our Three Burner Glass Top Gas Hob with a tempered glass 8mm surface. There was a sudden sound and it got burst.
    Glass splinters from its edges scattered but rest of it is still intact with thousands of small visible cracks.
    I dont know what caused it, but that was something really strange to happen.
    Kindly suggest is it safe to use util i get a replacement?
    Thanks and really good job you are doing to help out people.

    • Ted Wegert November 22, 2016 at 7:57 pm #

      Hi Sohaib, Yikes. Scary event I’m sure. The gas system will still work as long as it is free of glass chips. I’d get it fixed quick if you haven’t already. Sounds like the glass edges got too hot or it was under stress with the heat expanding the glass and framing.
      Ted

  30. Doyin November 20, 2016 at 12:23 pm #

    Hello Mr Ted, I have an idea of what i noticed and study about the Portable Electric Tempered Glass Burner Induction Cooker. this is my third one I buy before I got realized the cause of the glass cracking and damage, after used I think the glass need a natural air to apply on the surface of the glass and that keep it stronger and avoid it from breaking, please find more research about this and give out the information cos alot people keep wondering what is the cause of the broken glass even without pampering the cooker. thanks.

    • Ted Wegert November 22, 2016 at 8:10 pm #

      Hi,

      First thoughts…tempered glass and induction do not work well together. Maybe at first, but the heat is still too much for tempered and it will lose it’s temper and break over time. A high quality glass-ceramic is still necessary.
      Ted

  31. Amy November 26, 2016 at 3:27 pm #

    Hi. I am e-mailing from the uk in the hope that you can help with my issue. Back in September I purchased a Ceramic Hob. I only had the hob one month and one evening we used the hob and then cleaned the hob up after use. Later on in the evening I noticed a crack appear which I thought was strange as nothing had dropped on the hob. The next morning we noticed that the crack was much bigger. I contacted the manufacturer who sent a new hob out to us. The new hob arrived on October the 5th. We have only had the hob just over one month and on Thursday evening my partner was using the hob and we both heard a loud cracking noise and to our amazement it was cracked yet again. The cracks are much bigger. I contacted the manufacturer and explained to them what happened and they said that they can either replace the glass or take the damaged hob away and give me a refund so I have gone for the refund option. Having looked into this further I have noticed today that we have been using Induction saucepan on a non induction ceramic hob. Could this be the problem as to why the hob is cracking. Quite interested to know your thoughts? Thanks. Amy

    • Ted Wegert January 5, 2017 at 1:53 am #

      Hi Amy, Sounds like the framing or mounting was stressing/bending the glass, OR how the hob was installed in the countertop…especially if it happened twice. Best is to replace the entire hob (not just the glass) if you can, AND check the mounting into the countertop. It should seat nicely and flat WITHOUT ANY FORCE.

      I doubt it was induction cookware on the non-induction cooktop. Radiant cookware is not specific… it heats all. Make sure it’s flat and makes good contact.

  32. Myfanwy December 14, 2016 at 7:58 pm #

    I have a new (last week) Whirlpool ceramic hob. I’m very happy with it and have used it several times successfully. Just now, I put a pan of water on the large ring, turned the temperature to 9, then went to get some rice out of the cupboard. Suddenly, I heard a ‘pop’ and when I turned round I saw that the hob was cracked! What happened?

    • Ted Wegert January 5, 2017 at 1:36 am #

      Call the product service people on this one. Sounds like the glass was under stress prior to use, then with first heating the expansion stressed it further.

  33. Arash December 18, 2016 at 3:45 pm #

    Hi Ted,
    Thanks for the dedication and answering all the questions.
    The glass part of our Thermador Induction cooktop (in the right part) is broken and I can not get hold of the technician till Monday to ask for the advise.
    I was wondering if the other part (left side (crack-free) is safe to be used?
    My another question is is it common for the Thermador Service Department to replace ONLY the Glass/Ceramic top or we have to replace the whole cooktop.

    • Ted Wegert January 5, 2017 at 1:30 am #

      Sorry, I’m slower than the repairman. For those with similar questions… The top still works fine. Using the other half has its risks electrically with spills or with any exposed edges, but you should not cause more fractures with simple heating of the other area. Use with caution. Each manufacturer is different on what they need to replace with the glass breaks. Best to ask the experts with each specific model.

  34. Kathy December 27, 2016 at 2:09 am #

    I have a black glass cooktop. I happened to turn the wrong burner on tonight and noticed a crack under the glas surface across the burner. There is no visible cracks or chops when it is off. When you run a cloth or hand on the surface it is smooth. Like nothing is wrong. I would have never noticed something I usually have a pot/pan on the burner before use. Who knows how long it’s been there. Could’ve been there when we bought it a few years ago. Is it safe to continue using the burner?

    • Ted Wegert January 5, 2017 at 1:27 am #

      Yes, those small cracks can be hard to see. I’ve known people to use them for a while, but just know the risks with electricity and liquids seeping through. Best to fix it. Maybe the crack came during installation too. Sometimes the bending and manipulation on the unit can stress the top.

  35. Charles Delauro February 4, 2017 at 12:12 am #

    Hi Ted,I have been reading a lot of responses about cracks, I received an electric oven from a neighbor who was updating his kitchen, trying to help out another neighbor a street over I brought this electric oven and threw their old one out and put this one in its place, when I examined it closer I think I may have jostled it too much in the moving process and caused a hairline crack from front to back on one side now everything that I have read you state that these are unfixable, what about some high temperature glues or epoxies like they use in the automotive field on exhaust pipes or in the airlines?

    • Ted Wegert February 19, 2017 at 6:40 pm #

      The glues need to hold up to >1,100F and pass infrared heat through. If one exists…I have a lot of uses for it. I really do!

  36. Peter Karpf February 7, 2017 at 2:06 pm #

    I have a broken glass top on my stainless steel stove. What are the drawbacks of covering the whole top with a stainless steel sheet, 1/8″ thick and sealing it around the edges?

    • Ted Wegert February 19, 2017 at 6:38 pm #

      Yikes. If you covered the whole top with metal, the whole top will get hot and it will probably warp. Sounds risky. The radiant cooktops heat by passing infrared heat through the glass-ceramic to the pan, and some by conduction. If you put metal on the top, it will absorb, locally, all the heat and you’ll have a giant hotplate!

  37. Linda February 10, 2017 at 2:58 pm #

    Good Morning Ted- I just discovered my GE ceramic cook top was cracked front to back on the left side and was puzzled about it until I read a comment about a loud bang. Yep, the other day I heard a bang when cooking on the left rear burner, typically where I cook rice, hard eggs or small pots of pasta. I’ve cooked all of those this week on that burner. I was wiping up a bit of boil over from pasta I had just cooked when I discovered the crack. Well, clearly I did not electrocute myself . I’ve had the range a year, it was used. Fortunately I’m the only one cooking on and will not use the left side until I get a new “used” range. I’ll be going back to a coil top. I was admiring a vintage copper tone 42″ ish range on line the other day………

  38. Katie February 11, 2017 at 5:51 am #

    Hi Ted, I dropped a can of Pam of the edge of my Whirlpool cooktop. It has a small chip on the edge. Is it still safe to use?
    Thanks

    • Ted Wegert February 19, 2017 at 6:29 pm #

      Chip should be fine. Crack is where you use caution, especially over the heaters if they leak.

  39. Ashley Smith Patterson February 19, 2017 at 4:20 pm #

    Hello, great advice through here that helped us decide to replace our GE Profile cooktop that cracked. In the process of doing that we noticed that one of the ?ceramic? casings holding one of the heaters had a crack in it. Nothing huge or causing the heater to come out of ‘the casing’ but I am now wondering if it is a safety concern of any sort – could you advise? Thank you!

    • Ted Wegert February 19, 2017 at 6:23 pm #

      The ceramic insulation around the ribbon heater is somewhat fragile. I can see where it would crack easy. A crack in this insulation is no problem. Just make sure chunks of material are not removed. This insulation keeps the high temperatures/heat from things like the wiring. If you think it’s too bad, make sure you transition the wires on the new one the same as the old one. I take a picture before unplugging for reference. Ted

  40. Willy March 2, 2017 at 4:58 pm #

    Hi Ted,
    Great thread, I have a small chip on the edge of my cook top that I believe is only cosmetic. Is there any product you recommend that might fill the chip to make it less noticeable?

    • Ted Wegert May 4, 2017 at 6:38 pm #

      Sorry, haven’t tried anything to cosmetically cover a small chip in the cold area.

  41. Peter Kinahan March 28, 2017 at 2:13 pm #

    Hi Ted,

    I bought a Samsung glasstop range (and Dishwasher, Microwave and Refrigerator) through P.C. Richards, and my wife insisted on a ten year extended warranty (for about $900.) Stove top brought after 15 months. Two weeks after replacement, the new top also broke. P.C. Richards says they won’t honor the warranty, saying that we must be doing something. Both times, the crack is a single line. The second repair inspector ordered a new heating element, but that order has mysteriously been cancelled. P.C. Richards will install a new one for $200.

    I called Samsung. Very nice, offering me a free top, but I have to pay for installation from their vendors. One vendor said $440, another said $160, and then maybe more.
    Any advice?

    • Ted Wegert May 4, 2017 at 6:35 pm #

      A single linke crack is low mechanical stress, i.e installation or low bending stress on the glass…not a burner issue. Sorry about the problems.

  42. CCD April 26, 2017 at 11:26 pm #

    Hello ! I’d like to ask if there is already any new, quick-fix solution to fill a chip on a vitro-ceramic glass. The chips are about 1 to 2 cm-deep, in the center of the range. Nothing serious, it seems, but they’re visible and can still be considered a damage. We are in a rented place so would like to ask if there are available options (apart from buying a whole replacement). Thanks very much !

    • Ted Wegert May 4, 2017 at 6:29 pm #

      I don’t know of a fix, especially in the hot zone of the cooktop nothing will survive. In the cold area…Maybe a windshield material could hide it temporarily…but not if the temperature moves up at all.

  43. Connie Settles May 3, 2017 at 6:09 pm #

    We looking to replace out ceramic stove top/range. We love the look of the ceramic stove top but gave hated the way it works. The largest burner at best keeps hot things warm but would takes 45 minutes to bring a pot of water to a boil. We have changed the size of the pan and used heavy weight and light weight pans. But that particular burner just doesn’t work well. The other 3 burners seem to work better but not as well as normal 4 burner stove. My question is can I just suppose that all ceramic stoves are subpar to a 4 burner stove top or did I just get a lemon ceramic one on the first go round?

    • Ted Wegert May 4, 2017 at 6:15 pm #

      Sounds like a lemon or that specific burner is out. If you are concerned about boil time, search for a cooktop with the terms “Turbo boil” or “Rapid Boil” in the naming. Whirlpool brands have these and this 3200 watt burner is fastest out there. Or, look into induction cooktops. These are very fast.

      As always, it’s not the weight or mass of the cookware but the flatness that matters. High quality flat cookware has better thermal conductivity.

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