Kitchen sink adhesive

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wopachop

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Toyhauler kitchen sink has been falling down since the previous owner. I stuck a piece of wood under there to keep it propped up and resealed it. Been water tight and worked ok for several years. I removed the support wood and a small crack developed.

It almost looks like they used a form of hot glue gun to attach the undermounted metal sink to the granite counter. Has anyone tried or heard of someone using a heat gun to remelt the glue while keeping the sink pushed upward? 

The adhesive has a yellowish tint and the dried shape looks very similar to dried hot glue. Still semi flexible. Not sure i could heat up the granite enough before the wooden cabinets start to suffer. I believe its just a laminate. 

 

They are a PITA to remove, this guy did it this way.

Clean up really good then use LOCTITE® PL® 530 Granite Adhesive to glue it back.

Yore biggest issue will be working space, good thing yore not size Crusty.

 
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I dont think this is epoxy. Its somewhat flexible. Might cut out a chunk and see how hot it tanks to melt it.

 
I'd use Vulkem. Anytime I need something that I truly need sealed and waterproof. It's a sob to try to get off.

 
3M window weld. About 25$ a tube, and is absolutely effin permanent. The chit is unreal. I've never found a situation that it doesn't work.

 
Get the sink broken free of the countertop, you likely won't be able to remove it from the sink base, clean all of the old adhesive off, then use a putty knife and acetone or similar to remove all of the residue. Be careful with acetone it may damage the laminate. I like to use PL Ultimate Hybrid Sealant for sink applications but it's hard to find, any name brand polyurethane sealant will do though. You MUST also use undermount sink hardware, the sealant alone WILL NOT support it. After you reinstall the sink with a bead of sealant, cut some wood and prop it up from underneath and then mechanically attach it with the undermount sink hardware. finish the edge with the sealant with a wet finger. I'd let it sit for a few days to cure. Now's a good time to replace the drain if it's old, it will probably start to leak since you've disturbed it, at least remove it and reinstall with some new putty under the flange. 

Good luck with it, it's not too difficult to do. 

 
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