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Removing Granite Countertops Without Damaging Cabinets

 
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Old 09-30-2015, 07:29 PM   #21
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Re: Removing Granite Countertops Without Damaging Cabinets


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Expoy and LN could discolor the stone, so I can't see it ever being used by a professional, and I am not sure what home owner could install their own tops. So I would doubt there are that many out there. I've rarely seen silicone.

Since nothing is needed to fasten granite, I am always surprised to see silicone. It's not like the tops are going to move without it.
Modest amount of silicone always seemed appropriate to me. Big slabs won't move, but small to medium ones will. I like the moderate unifying factor of it as well. Certain key areas need the lock in on isolated end panels and such. Though I often slicone them from the inside after top placement for future removeability, or adjustment.

I think it gives you some little bit of filling/bearing leeway as well. I think it helps mitigate a style that was a tad proud from the factory from becoming a point bearing stress on the stone types of things. It's not a super cure, but it helps. I think perhaps a fair amount. I do better than most, but not everyone belt sands every one of their cab installs to NASA grade tolerances in absolutely perfect plane. If a little silicone helps me avoid a single stress crack over my whole career, it's worth it. Warranty items of that nature can potentially turn into extremely far reaching scopes of work with all the interrelated finishes and fixtures. .....Knock on wood.
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Old 09-30-2015, 09:00 PM   #22
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Re: Removing Granite Countertops Without Damaging Cabinets


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Modest amount of silicone always seemed appropriate to me. Big slabs won't move, but small to medium ones will. I like the moderate unifying factor of it as well. Certain key areas need the lock in on isolated end panels and such. Though I often slicone them from the inside after top placement for future removeability, or adjustment.

I think it gives you some little bit of filling/bearing leeway as well. I think it helps mitigate a style that was a tad proud from the factory from becoming a point bearing stress on the stone types of things. It's not a super cure, but it helps. I think perhaps a fair amount. I do better than most, but not everyone belt sands every one of their cab installs to NASA grade tolerances in absolutely perfect plane. If a little silicone helps me avoid a single stress crack over my whole career, it's worth it. Warranty items of that nature can potentially turn into extremely far reaching scopes of work with all the interrelated finishes and fixtures. .....Knock on wood.
Medium or small, still no need. Most tops are locked in with backsplashes of some kind.

I could see the concern with islands, but even then I haven't installed an island yet that needed any fastening. They had enough mass to stay right where they were laid.

If the protrusion is enough to create a hinge point for potential failure, you can most certainly foresee that and remove the said offense. NASA tolerances are certainly not necessary and it's quite easy to get cabinets in plane enough to eliminate any concern of future failure.
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Old 10-01-2015, 02:49 PM   #23
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Re: Removing Granite Countertops Without Damaging Cabinets


I personally like the little bit of bedding properties gained by using silicone. The better stone fab subs I've dealt with tend to agree. The lesser one's have more of a "whatever dude" or "it's all the way down in the truck dude, it'll prolly be fine dude" attitude about it.

We disagree about no need to anchor small tops, and letting the splash lock it in as you mention. I wouldn't want the caulk bead from counter top to splash tiles to be the only thing securing a 12" or 15" section between a range and a refer for example. It is going to get bumped, and I've seen tiles popped, and broken caulk beads because of it. Even more important with todays trend of very small splash tiles.

The NASA reference was an exaggeration for color. Referring to the fact that stone substrates should be very flat. Let's use the highly technical term -flat flat instead. There are definitely variations in production cabinets, and curves and humps in the overall assembly are not always obvious with out going to town with a straight edge.

Exactly how much deflection, or high centered fulcrum stress, can any given specific slice of stone take? And where exactly is someone going to point load it with a knee or foot reaching in the top shelf, or touching up a paint line? I just don't want to ever find out the hard (expensive) way. Ever.

No, it's not a grave concern, but to me, it's worth the $4, and 1.5 minutes it takes. If you think it's overkill, then you probably shouldn't do it. I'm ok with that.
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Old 10-02-2015, 04:14 PM   #24
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Re: Removing Granite Countertops Without Damaging Cabinets


I agree on the silicone. Seems to help, and I've never had a stone move.

BTW, I do find the scraping bits to help with removing the silicone. Getting it fully separated from the back is a different problem all together.
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Old 10-02-2015, 05:50 PM   #25
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Re: Removing Granite Countertops Without Damaging Cabinets


You guys that see silicone used to install and glue down the slab, explain to me how they do it. I just don't see the logic or point, since it's locked in as TNT mentioned. Slabs go down dry, then shimmed. It has nothing to do with "whatever dude" type of attitude, either. Are these guy reaching into the base cabinets and gluing edges afterward? Unless it has something to do with earthquake zones or whatever, I don't get it. Islands and single cab jobs are a different story, like maybe a small piece on an end or something like that.
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Old 10-03-2015, 03:25 AM   #26
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Re: Removing Granite Countertops Without Damaging Cabinets


My installers usually set the slab in place and the run a bead on the underside of the slab at the front stile perimeter. Some guys run beads on on the box tops and sides and I'm sure others do it differently. Best bet is to try and access all the insides and look for silicone that squeezes out and look under the front. You should be able to find some evidence of where it is

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