Fixing Chipboard Flooring To Joists

Screw down the boards.

Fixing chipboard flooring to joists. So with 18mm chipboard you want board screws at least 45mm long. Fixing chipboard flooring panels the t g panels should be laid in a staggered pattern with long edges across the joists and short edges falling on the centre of joists. Space the screws out every 6 inches across the entire subfloor. I ll be laying a new chipboard floor over some old joists some of which have been replaced and now it is all insulated.

Some manufacturers even recommend applying glue to the top of the joists as well in an effort to reduce movement and squeaking often associated with chipboard floors. Sink 1 1 4 inch screws through the chipboard into the floor joists to secure it. Should the short edges overhang then the overhang must be supported by a noggin. The screws used should ideally penetrate the joists by 1 5 x the thickness of the board.

You will need to use 5 screws evenly spaced across each joist so you can use as many as 30 screws per board.