Fixing ROOFMATE RL-X
ROOFMATE™ RL-X boards installed over the rafter are secured by the fixings used to secure the counterbattens, which pass through the insulation and into the rafters. The counterbattens, which will normally be 32 or 50mm thick, support the tiling battens (Figure 57 ).
The counterbattens are secured using specialised fasteners, e.g. Helifix Inskew, Proctor PR nail, Ancon Staifix - Thor Helical Batten fixings. The type and number of fasteners should be calculated using the methods in BS 5534: Part 1 and fasteners manufacturer's data.
The tiling battens can be secured directly to the counterbattens using normal fasteners.
Joints between adjacent boards of ROOFMATE RL-X do not require cross noggins: the tongued and grooved edges of ROOFMATE RL-X are self-supporting and ensure continuity of insulation at all joints.
However, the boards must never be stood on or used as a working platform.
The ROOFMATE RL-X boards should be laid with their length parallel to the ridge/eaves with the tongue facing up the roof slope (Figure 58).
ROOFMATE RL-X boards cut-to-size can be installed between the rafters and secured in place by support battens.
