PRECONDITIONS
ROOF PITCH
Standard roof pitch from 10" (minimum 7")
STRAPPING
Timber battens 4 x 6cm or metal
Paint the batten and beam contact surfaces permanently white or laminate with reflecting guttagliss adhesive tape silver, so as to prevent the accumulation of heat, which can cause cracking and deformation. timber preservatives/impregnation must be allowed thoroughly dry and ventilate since discoloration will otherwise be possible.
SUPPORT SPACING
Max 50cm for pvc and polyster
Max 80cm for makro and acryl with normal loads. In regions with high or very high loads, the spacing must be suitably reduced.
ACCESSIBILITY
May only be accessed with a load distributing board.
REAR VENTILATION
In accordance with DIN 4108, adequate provision must be made for ventilation from the rear. No special action is required for open structures. e.q. Carports, pergolas, etc.
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