Fixing plywood platform floors
Nails used for fixing plywood have to be of a length not less than 2.5 times the thickness of the panel and be:
- 2.8 mm diameter flathead or bullet-head hand-driven nails
or - 2.5 mm diameter machine-driven nails.
Nails shall be spaced at:
- 150 mm centres at panel ends
- 300 mm centres at intermediate joists and along noggings.
Nails must not be less than 10 mm from the edge of sheets.
Deformed shank nails have to be used where a resilient floor covering is fixed directly to the plywood. Structural adhesive or deformed shank nails are to be used where plywood is fixed to unseasoned floor joists of depths greater than 150 mm.