How Many Screws Per Sheet Of Plywood Subfloor

According to table r602 3 1 of international residential code irc subfloor fastener schedule is as follows.

How many screws per sheet of plywood subfloor. Tongue and groove edges on many premium floor panels such as weyerhaeuser s edge gold osb panels are designed to self gap. You ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. It s available in sheets of many sizes with 3 foot by 5 foot sheets being the most common. 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.

Use 6d common nails spaced 6 apart on edges and 12 apart in the field. 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. So if your subfloor is 3 4 of an inch thick any screw about 1 3 4 inches long will do the trick. Whether you screw nail or staple your 3 8ths underlayment depends completely upon what flooring product you are planning to put over it.

The screw count is a bit high at times but this will allow for losing some. 800 32 25 sheets. Whenever you re laying tile on a wood subfloor you need to first install cement backerboard to prevent leaks and water damage. Cement backerboard is a thin layer of concrete with fiberglass mesh on both sides.

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. This simple sub floor materials calculator will provide you with the lineal feet of floor joist needed the number of sheaths to cover the floor and how much glue and how many screws it takes to attach the sheathing to the joist. If the plywood subfloor you re placing.