Screws Per Sheet Of Sub Floor

Am i on the right track.

Screws per sheet of sub floor.

The screw count is a bit high at times but this will allow for losing some. Use a solvent based glue that meets astm d3498 performance standards. Nail spacing for sheets of osb and plywood is 8 inches per nail. I ve read for nailing the underlayment to do one nail every foot in the interior of the plywood and around the perimeter at 2.

Man that s a lot of screws. In cases where latex subfloor glue is required careful selection is necessary due to the wide range of performance between brands. According to construction and renovation experts some of the best screws for subfloor include the senco 08200y screws the simpson strong tie screws and the hillman group 48248 subfloor screws. Use 6d common nails spaced 6 apart on edges and 12 apart in the field.

Attach the smaller piece to the subfloor with a 1 inch wood screw every six inches in each direction using a power drill. The first two of these come with a nice yellow zinc finish while the hillman group screws are unassuming yet tough in basic black. I ve done a few 4x8 planks with screws at that frequency. 4 feet equals 48 inches which you then divide by 8 to determine that you ll need six nails where the board comes in contact with a truss.

Push the full sheet tightly against the small section of plywood and the. Drill screws through the backerboard sheets every 6 to 8 inches. This means that you ll need to use six nails per each truss that runs under the sheathing because each sheet measures 4 feet wide by 8 feet long. Be sure the joists are dry and free of dirt before applying.

According to table r602 3 1 of international residential code irc subfloor fastener schedule is as follows. Drive the screws in so that the heads are slightly below the surface of the backerboard sheet. Position the screws at least 1 2 inch but no more than 2 inches from the edge of the sheet.