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Install Subfloor in Bathroom

bathroom subfloors are no different than any other ground, with the exception that the bathrooms are generally smaller and must be able to support the weight of the tub. structural specification will not change with the size of the underground. amount of time for the installation varies depending on the size of the bathroom, but the work should not take longer than 1 to 3 hours.

Measure bathroom floor and the amount of plywood that need is determined. For example, floor is 10 feet by 10 feet is equal to 100 square feet. A sheet of plywood is 4 feet wide by 8 feet long, equivalent to 32 square feet.

Install Subfloor in Bathroom

Divide 100 square feet by 32 square feet. Based on this calculation, you need 3.125 sheets of plywood for floor. Apply construction adhesive onto floor joists directly underneath first sheet of plywood.

construction adhesive will add extra layer of strength and keep floor from squeaking later on. Lay first sheet of plywood perpendicular to floor joist. Work from left to right and begin in back corner.

Fasten plywood with 8 penny nails that are space 16 inches apart. Apply more adhesive under next sheet of plywood and lay it ahead of previous piece, lengthwise. Butt joints together and attach with 8 penny nails.

Stagger joints in plywood. Staggering joints will add strength to entire floor. See attached diagram as reference.

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How to Install Subfloor in Bathroom

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