Recommended Screws 3 4 Plywood Flooring

A thicker subfloor takes a 3 inch screw.

Recommended screws 3 4 plywood flooring.

Some experts suggest that 15 32 inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less but slightly thicker 3 4 inch plywood should be used for joists spaced further apart. I bought subfloor glue and will be putting. Use 1 1 4 inch screws for basic tasks where strength is less of an issue or when attaching two 3 4 inch thick boards across the grain. Keep some 2 1 2 inch deck screws for screwing into end grain plus some stronger 3 inch screws for attaching into end grained boards or when a little extra added power is needed.

If you are using the new ply directly as underlayment i would use 1 1 2 screws to attach to decking. The 3 4 inch thick subfloor takes a 2 inch screw. Each is available in lengths from 1 1 4 to 3 inches. Floors with nailheads 16 19 inches apart are likely about 3 4 inch thick which suggests the need for screws at least 1 3 4 inches and possibly up to 2 inches long.

Hey there i m getting read to screw and glue some subfloor in. The proper steel screw sizes for securing 3 4 inch plywood to the floor joists are 8 10 and 12 screws. A wider gap between clusters of nails may indicate a floor 1 5 inches thick which would require subfloor screws that are 2 to 3 inches long. If it were me and i was going to put additional underlayment down on top of the new 3 4 ply i would use at least 2 1 2 screws and do my best to find the floor joists below.

There are two basic ways to go. Typically the 3 inch variety is used to secure plywood subfloors. Conventional wisdom has always been that screws with fine threads are best for hardwoods oak cherry maple birch etc. Once the point has pulled a wood screw down into the material it s up to the threads to continue driving it the rest of the way in.

Use a heavy duty drill to drive phillips head wood screws through the subfloor into the floor joists. Framing flooring and sub flooring screw pattern and size for 3 4 plywood subfloor. The number refers to the thickness of the screw. Three fourth inch sheets are the standard in plywood subfloors.

The recommended thickness of the plywood subfloor is governed by the spacing of the joists. The floor joists beneath a plywood subfloor can be a range of heights but 6 inches is a standard. Remove the existing flooring.