Should you put plywood under granite countertops?

When installing granite countertops, you will not need an underlayment of plywood if the granite has a thickness of 3 centimeters (about 1 1/4 inches). However, 2 centimeter granite needs support under it since it is less sturdy, so having a plywood underlayment is a must.Click to see full answer. Also question is, do you put plywood under granite countertops?There is no plywood under the granite. From contributor K: You need to have a subtop to glue the granite to. This will prevent it from cracking when there are larger unsupported areas.One may also ask, what kind of plywood do you use for countertops? The best type of plywood is veneer plywood. The thickness for a countertop should be ¼ of an inch. This is usually available for $1 a square foot. Maple and birch can be found sold in large boxes for under $50. Considering this, what size plywood do you use for granite countertops? plywood supports the granite Cut 3/4″ plywood to fit on top of all the base cabinets. The plywood supports the granite and gives enough clearance for the bull-nose edging to clear the drawers and doors. Make sure the plywood does not overhang the outside dimension of the cabinet.How thick should Plywood be for countertops?The average thickness of plywood sheets used for backer on counter tops is 3/4-inch. This provides adequate support for a wide range of finish materials.

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