How to Install Intrim Lining Boards

• Confirm moisture content is within the optimal range.
• Check framing for straightness and compliance with AS1684.2 or AS4100.
• Apply vapour-permeable membranes near the building envelope.

• Boards can be installed horizontally, vertically, or diagonally.
• Fasten at recommended centres (see table below).
• Apply a bead of construction adhesive to each batten or stud.
• Position the first board with the tongue facing the installation area and secure with brads or nails.
• Install subsequent boards, checking for straightness and plumb. Boards should fit snugly but not too tight.
• Stagger butt joints over battens or studs.
• Trim the final board to fit if needed, resealing any exposed timber before installation.

Face Fix: Two brads/nails at each stud, at least 15mm from edges/ends.

Secret Fix: One brad/nail through the tongue at each stud, head punched below the surface.

• Leave a 10mm expansion gap at the top/bottom (horizontal) or sides (vertical).
• For large areas, install control joints every 3m, concealed under a cover strip if desired.

• Use stainless steel fasteners for coastal areas, hot-dip galvanised for inland exteriors, and bright steel for dry interiors.
• Avoid over-driving nails with pneumatic guns (120psi is usually sufficient).