How Many Screws Per 4x8 Sheet Subfloor

Stagger adjacent rows of panels by two joists.

How many screws per 4x8 sheet subfloor.

A 4 8 sheet of plywood is 32 ft 2. According to table r602 3 1 of international residential code irc subfloor fastener schedule is as follows. 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.

If it s going on a ceiling it ll take about 36 screws. 800 32 25 sheets. 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. The screw count is a bit high at times but this will allow for losing some.

That s if the panel is going on a wall. Whenever you re laying tile on a wood subfloor you need to first install cement backerboard to prevent leaks and water damage. Nail the panels with 10d common nails or 10 2 1 2 inch wood screws spaced 6 inches apart along the edges and 12 inches apart in the middle. 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. 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.