stone countertop on IKEA cabinets

Hi, I installed IKEA cabinets in my kitchen (and they look nice so far). I am going to order granite countertop. Do I need to put 3/4″ plywood underlayment for this? My kitchen has funky layout so some parts of countertop will go around column and some will hang in the air. Those parts will need underlayment for sure. Should I put it everywhere just to keep whole surface level and with no flex? Thanks

bobjohn

in Bath & Kitchen 13 years and 10 months ago

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BrooklynZoo | 13 years and 10 months ago

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We didn’t need any plywood for the Silestone countertop on our IKEA cabinets

daveinbedstuy | 13 years and 10 months ago

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Standard countertops are 1 1/4″.  You can use 3/4″ without an underlayment on top of cabinets with no problem but with an overhang of 12″ or so to eat at, you run the risk of it breaking if anyone were ever to sit on it.  In that case you could use a plywood underlay and just leave it a few inches short so it doesn’t show, otherwise you have an ugly edge.   You could also use 3/4″ with a plywood base and have the fabricator make a 1 1/4″ thick edging to hide the plywood.

pwhite | 13 years and 10 months ago

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Talk to your fabricator.  I have overhangs in my kitchen, and they were reinforced with steel.  The granite was routed out on the bottom, and the steel was epoxied in.  Plywood is probably not a good idea since it tends to warp.