dishwasher silicone failed under quartz

WendyBMarch 11, 2009

My quartz was installed less than 2 weeks ago, and tonight when I opened the dishwasher door and slid open the bottom and top baskets, the whole dishwasher popped away from the countertop!

Apparently the warmth of the dishwasher cycle softened the silicone so it didn't take too much weight to break the seal.

And its not like I opened it while things were still hot. I opened it about 2-3 hours after the drying cycle ended. I supppose the previous cycles cooled down overnight before I opened the drawers up. I really can't remember the previous cycles.

Has this ever happened to anyone before? Is siliconing the dishwasher tabs the standard way to connect the dishwasher? They had told me that they silicone the tabs, but in reality they ran about 6" long around both tabs.

I will call them tomorrow, but any heads up warnings or advice in advance would be appreciated.

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My dishwasher clips are screwed into the adjoining cabinets. This keeps it from tipping forward or pulling out. I can't imagine just siliconing it in place.

    Bookmark   March 11, 2009 at 10:17PM
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Ours is installed the same way as nkkp's. Although we have granite countertops, not sure if that matters.

    Bookmark   March 11, 2009 at 10:24PM
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Siliconed the DW to the counter! Never heard of such a thing.

If this contractor is also responsible for the upper cabs, please make sure they are secured mechanically to the studs, not siliconed.

    Bookmark   March 11, 2009 at 10:45PM
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hmmm... the tabs are on the top of the D/W. They were formerly screwed into the formica base. I don't see any screwing opportunities on the sides. Maybe my D/W is too old and I need a new one. LOL!

This was a minimal mini-renovation. painted cabs, countertop, wallpaper removal, paint, new nice vinyl flooring and a few other things. But it does keep growing... "mini" is all relative!

    Bookmark   March 11, 2009 at 11:05PM
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Wendyyb, from what I understand, there are 3 ways to install a dishwasher but it depends on your countertop. Formica ones can be attached to the top, usually with screws I think. But not with stone. There are kits you can buy from the mfg to attach them to the sides or make it yourself if your so inclined. Also they can be attached to the floor.

    Bookmark   March 11, 2009 at 11:15PM
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Just yesterday, my new DW was installed under my soapstone. He glued (I think) some wood to the soapstone and then screwed the DW to the wood. I think this is bad. He also got glue all over the place. GRRR!

The installation instructions I'm reading say to use a side mounting kit.

    Bookmark   March 12, 2009 at 10:03AM
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I was just talking about this with an installer yesterday. He said they epoxied the DW to the granite. I assume it's the same with quartz. Maybe epoxy is stronger/harder than silicone.

Here is a link that might be useful: granite countertops

    Bookmark   March 12, 2009 at 10:47AM
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Hmm...maybe its not the same with quartz. mabye that's why mine failed. The countertop people do granite & quartz. Maybe the granite absorbs better making a stronger bond????

My countertop salesperson is off today so I can't get their input. I am going to stop at an appliance store today to see if I can get some sort of side-mounting kit or advice. Or a new D/W :-)

If I had at least known that the bond was vulnerable, I could have tried to get in the habit of not opening it when things were still warm.

    Bookmark   March 12, 2009 at 10:56AM
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I called Whirlpool about my situation today. I was unable to get more info about the installation but was offered the side mounting kit for $4.99. I was told that I should order it through them? Not sold by HD / Lowes?

    Bookmark   March 12, 2009 at 11:37AM
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Fori is not pleased

I had a dishwasher installed into my old cabinets since the old one died and I didn't want to wait for the remodel. The Lowe's installer did a terrible job. Our cabinets have about 4 inches of empty space between the DW and neighboring cabinets on each side. The guy threw away the hardware he didn't use (and said he never got it) and used really long screws to attach the thing. Needless to say, really long screws can't exactly hold a DW in place. We eventually had to install it ourselves (and it's not too hard if the plumbing is already there). We had to install 2x4s to fill in the gap, but basically, just pull the thing out and look at it. You'll see what can be attached where. They usually have multiple attachment points for different applications. The counter doesn't need to be involved!

    Bookmark   March 12, 2009 at 11:47AM
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I have quartz. After the d/w was installed, I opened the door to use it and was surprised when the whole d/w tilted forward. It was not secured at all.

My contractor said the countertop guys were supposed to attach it to the counter. Not sure by what technique - *I* assumed he meant they were supposed to screw some sort of bracket to the underside of the counter, and then screw the dishwasher into that, but I really have no idea. It didn't matter - the installation instructions for my d/w (Miele) said to attach it at the sides. The contractor didn't seem familiar with that idea, but he sent the carpenter back to do it.

I wonder if European d/w's attach differently from American ones? The contractor was about 60 years old with LOTS of experience installing kitchens - I can't believe he hasn't encountered this before, unless he's only installed Whirlpools and GE's before.

I don't see why it would be a granite vs. quartz issue.

    Bookmark   March 12, 2009 at 11:48AM
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maureen, is your existing method working? The fact that there is some wood to screw into seems good.

I would just recommend let it cool completely before opening.

I wonder if the side mounting kits are universal or adaptable and would work on 20 year old D/W.

    Bookmark   March 12, 2009 at 11:55AM
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They should not have used silicone. Silicone is normally sold as a sealer. It is not a strong adhesive.

They should have anchored it to the cabinets on either side. Failing that, they should have epoxied clips or wood to the bottom of the counter top and fastened it to that.

They should have known better than to use silicone. Their skills and knowledge are suspect. I would have somebody mechanically inclined go over everything they did to verify it all was done properly

    Bookmark   March 12, 2009 at 12:16PM
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I don't know, Wendy. It was installed only yesterday! That's why your timely post made me wonder about how it was done. He (my GC's plumber/carpenter) said not to use the DW for 24 hours to let it dry (whatever it was - glue? I was in a rush).

Sorry to have no good advice!

    Bookmark   March 12, 2009 at 12:23PM
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Mine did the same thing. Brackets were glued to the quartz. I don't know who (gc or cabinet guy) did it or what they used - it's not silicone becuase its pretty hard. The DW was installed about a year ago and the one bracket came off about 6 weeks ago. I have a bosch drawer DW.

    Bookmark   March 12, 2009 at 12:45PM
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I just did an internet search on the problem and got this: I have no idea if they work or not, but I thought I'd pass the link along

    Bookmark   March 12, 2009 at 2:05PM
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the granitegrabber does look interesting. Thanks for the link. I bet I would have to get all the existing gunk off first.

    Bookmark   March 12, 2009 at 3:26PM
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I had the same problem. We reused our dishwasher, so we did not have the side anchor clips and my contractor siliconed the anchors to the granite underside, which only held for one day. We then tried to epoxy a wood strip to the underside & screw the installation brackets to that, but it would not stay attached.

I went ahead & bought the granite grabbers. The company owner, Joel, was very nice. He even called me and emailed to make sure I got them. They work fine & are easy to install. I imagined it would cost about the same amount to have Bosch ship me 2 side installation brackets and those are a lot more complicated to install. I have no connection to the guy or the company... just wanted to let you know that I used granite grabbers & so far so good.

    Bookmark   March 12, 2009 at 8:44PM
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I'm ashamed to admit, but we never had our dishwasher installed properly. someone had suggested silicon. It was a very tight fit, so that kept it in place-- it never came out of it's spot (except once-- then I learned not to pull the bottom rack all the way out if it was full of heavy pots and platters).

I hope your DW situation turns out OK-- good to hear it came in.. I hope this means finished pictures are in your future!

    Bookmark   March 12, 2009 at 8:48PM
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