How Many Screws Per Sheet Of Plywood Subfloor

A 4 8 sheet of plywood is 32 ft 2.

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. I will be using a 3 8 plywood over a 2x6 tg subfloor if it matters. 800 32 25 sheets. Use 6d common nails spaced 6 apart on edges and 12 apart in the field.

Here are nine common subfloor installation mistakes and how to prevent them. 46 screws a sheath 24 o c. 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.

I can t find any instruction or installation guidelines that note using screws. To find out which length of screw you ll need you first have to know how thick the flooring is. Most construction experts use 3 inch steel screws for plywood subfloors. 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.

53 screws a sheath 19 2 o c. Thu oct 25 2007 12 08 pm posts. 52 hi all i m putting down a 1 2 plywood underlayment atop my osb subfloor. If the plywood subfloor you re placing is 5 8 of an inch thick you need a screw about 1 5 8 inches long.

You ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. Mon dec 24 2007 3 48 am. Is there an advantage to using nails.