Secure a breather membrane to the walls.u00a0
Fit wooden battens (38mm x 19mm) horizontally to the wall at 400mm centres using countersunk screws and wall plugs.
Secure the trims to the battens at 400mm centres (max) with 4mm countersunk screws or 12mm staples.u00a0
Select the first panel and cut to length. Remember, if the last panel in the run is on a feature corner, you could remove more of the first board to finish with a complete board.
Secure each board with countersunk screws or 12mm staples.u00a0
Mitre the front face of ceiling trims where necessary.