How To Sucure Plywood To Floor Joists

Use trus joist tji joists or kiln dried performance tested lumber such as weyerhaeuser framer series lumber which is more dimensionally stable than green lumber.

How to sucure plywood to floor joists.

Each is available in lengths from 1 1 4 to 3 inches. Plywood or 1 4 to the undersides of the exposed joist ends. Then glue and screw the plywood to the joists. If you want to attach drywall to the ceiling later you ll have to install strips of 3 4 in.

How to make floor joists stronger. 3 4 inch plywood subfloor preparation. After several centuries of service floor joists in older homes may sag or crack. The plywood runs parallel to the joists not across them.

Not letting a subfloor dry. If the distance between joists nail heads is 16 inches or up to 19 1 2 inches for engineered joists the subfloor is probably 3 4 inch thick. Long spans of joists in newer homes may wobble or bounce from foot traffic. Joists are spaced at regular intervals much like the studs in a wall frame.

Wet lumber may lead to dimensional changes as the joists dry resulting in nail pops and floor squeaks. The second floor of this house is built with 2 x 10 wood i joists joists that resemble steel i beams and are 9 5 inches thick 16 on center and spanning 13 5 feet. This will give you the location of the floor joists. The proper steel screw sizes for securing 3 4 inch plywood to the floor joists are 8 10 and 12 screws.

These joists are stronger than comparable solid wood joists provide a 66 larger nailing surface for the plywood. Long sheets are centered on the span leaving the ends of the joists exposed. Typically the 3 inch variety is used to secure plywood subfloors. On the tops of the floor joists we measure and mark every 4 feet this will be the plywood seams.