How Many Screws Per Sheet Of Plywood Subfloor

If the plywood subfloor you re placing.

How many screws per sheet of plywood subfloor.

800 32 25 sheets. To find out which length of screw you ll need you first have to know how thick the flooring is. Cement backerboard is a thin layer of concrete with fiberglass mesh on both sides. You ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it.

A 4 8 sheet of plywood is 32 ft 2. The purpose of an underlayment for vinyl is to have a glass smooth surface to glue to 1 4 ply is the industry standard whereas an underlayment for ceramic tile is to add strength and 3 8ths isn t thick. The screw count is a bit high at times but this will allow for losing some. Use 6d common nails spaced 6 apart on edges and 12 apart in the field.

To avoid buckling subfloor panels should be spaced with a 1 8 inch gap at all edges and ends to provide room for naturally occurring expansion. Divide by the total square footage by the square footage of a sheet of plywood to find the number of sheets required to cover the space. Whether you screw nail or staple your 3 8ths underlayment depends completely upon what flooring product you are planning to put over it. Tongue and groove edges on many premium floor panels such as weyerhaeuser s edge gold osb panels are designed to self gap.

Whenever you re laying tile on a wood subfloor you need to first install cement backerboard to prevent leaks and water damage. For example if the area to be covered in plywood is 800 ft 2 then 25 sheets of plywood will be needed to cover it. According to table r602 3 1 of international residential code irc subfloor fastener schedule is as follows.