Sealing gap between laminate countertop and farmhouse sink

[Greg Davis]

Hey everyone,

I have a new construction build and we have a farmhouse sink but are using laminate countertop. There is a gap between the sink and countertop from where the cabinet maker cut with a jigsaw. Anyone have any thoughts on best thing to use for practicality and appearance? I’ve sealed the edges of the countertop with polyurethane already. Just need to close that gap.

 

[WorthFlorida]

Fill the gap with backer rod. 3/8" is about the smallest you'll find so thriming thin strips from it is probably necessary. Jam it in the space using a putty knife and leave at least 3/16" recess from the countertop edge. You do not want it to be too deep because the caulking will shrink a little when curing. Use a siliconized caulk (gloss finish) or DAP sealant with MICROBAN in "higher gloss". In know it is available in white. The glossy product will take longer before discoloration but non gloss it still good. You'll probably have to re-do it every year or so to keep a nice clean line. You might want to try regular and gloss on a sample piece to see how it will look once cured. The gloss may look like it is part of the sink?

Use painters tape to mask off where you do not want the caulking, about 1/16" of an inch from the edge. Make a nice bead and with a wet finger to smooth it out or lay it flat using a putty knife. Don't get too thin because as it cures it may pull away from either surface leaving a small dark lines.

Let it set up for about 5-10 minutes and then pull the tape back over itself so not to pull the product up. Keep it dry and no touch for about about eight hours. DO NOT use 100% Silicone sealant here.

https://www.homedepot.com/p/DAP-Kwi...-Adhesive-Caulk-with-Microban-18868/100357221

https://www.homedepot.com/p/Frost-K...ERCH=REC-_-pipsem-_-202066515-_-100067266-_-N

 

[Sponsor]

 

[Greg Davis]

Fill the gap with backer rod. 3/8" is about the smallest you'll find so thriming thin strips from it is probably necessary. Jam it in the space using a putty knife and leave at least 3/16" recess from the countertop edge. You do not want it to be too deep because the caulking will shrink a little when curing. Use a siliconized caulk (gloss finish) or DAP sealant with MICROBAN in "higher gloss". In know it is available in white. The glossy product will take longer before discoloration but non gloss it still good. You'll probably have to re-do it every year or so to keep a nice clean line. You might want to try regular and gloss on a sample piece to see how it will look once cured. The gloss may look like it is part of the sink?

Use painters tape to mask off where you do not want the caulking, about 1/16" of an inch from the edge. Make a nice bead and with a wet finger to smooth it out or lay it flat using a putty knife. Don't get too thin because as it cures it may pull away from either surface leaving a small dark lines.

Let it set up for about 5-10 minutes and then pull the tape back over itself so not to pull the product up. Keep it dry and no touch for about about eight hours. DO NOT use 100% Silicone sealant here.

https://www.homedepot.com/p/DAP-Kwi...-Adhesive-Caulk-with-Microban-18868/100357221

https://www.homedepot.com/p/Frost-K...ERCH=REC-_-pipsem-_-202066515-_-100067266-_-N

Thank you so much for the help!