How Many Screws Per Sheet Of Plywood Subfloor

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.

How many screws per sheet of plywood subfloor.

Is there an advantage to using nails. I have read on this forum that it is possible to utilize screws but i don t understand why all the direction leave out using screws as an option. How many screws needed. You ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it.

52 hi all i m putting down a 1 2 plywood underlayment atop my osb subfloor. Use 6d common nails spaced 6 apart on edges and 12 apart in the field. 800 32 25 sheets. 46 screws a sheath 24 o c.

According to table r602 3 1 of international residential code irc subfloor fastener schedule is as follows. Most construction experts use 3 inch steel screws for plywood subfloors. Mon dec 24 2007 3 48 am. So if your subfloor is 3 4 of an inch thick any screw about 1 3 4 inches long will do the trick.

Thu oct 25 2007 12 08 pm posts. 53 screws a sheath 19 2 o c. 39 screws a sheath floor opening if there is an opening in your floor enter the sq footage in the floor opening field. I will be using a 3 8 plywood over a 2x6 tg subfloor if it matters.

If the plywood subfloor you re placing is 5 8 of an inch thick you need a screw about 1 5 8 inches long. Here are nine common subfloor installation mistakes and how to prevent them. 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.