Permo® forte is a four-layer vapour-permeable roofing underlay that lets roofs breathe.

Permo® forte is suitable for all pitched roofs.

Features:

Very strong, bitumen-free, vapour-permeable undelay Clean, safe and lightweight to handle Four layer material with grid Suitable for cold and warm roof applications Simple to install, using traditional methods No ventilation of the roof void required UV stable for four months Hydrophobically treated Allows roof structure to breathe, yet fully waterproof Limits air leakage in a sealed roof application

L/H Dry Verge Unit R/H Dry Verge Unit Batten End Clip Eaves / Ridge Closer Unit Ridge end cap

Left Diagram: For high profile tiles (90 vertical measurement)

Right Diagram: For plain and low profile tiles (70 vertical measurement)

DFR3 provides 5000mm2 airflow area per linear metre to both roof slopes, making it ideally suited to cold and warm roofs, and for batten space ventilation.

photo to follow

Components:

Ridge / Hip Roll Ridge / Hip Gasket Screw & Clip for Gasket Hip tray 1650mm long Tile clip for small cuts

A unique feature of this system is the Universal Over Facia Ventilator with two fixing positions, that adapt to 10mm and 25mm airflows.

Each pack contains: 1 x 6 metre Roll Panel 10 x 600mm Underlay Support Trays 6 x 1 metre Over Facia Vent

AIRFLOWS: 25mm fixing position=25,000mm2 per metre 10mm fixing position=10,000mm2 per metre

Left: 100mm Reducer for Hooded Vent Right: 100mm Reducer for Flush Fitting Vent

Left to Right:

Eaves Filler Comb Aluminium Nails Verge & Tile Clips Hip Iron

Left: Flat Vent Right: Double Roll Vent

Airflow 15,000mm2

Vent Tiles are available in a range of colours to suit the main tile selection.

Flat Flush Tile Vent

Airflow 7,000mm2

Vent Tiles are available in a range of colours to suit the main tile selection.

Left: Hooded Tile Vent Right: Double Roll Hooded Vent

Airflow 10,000mm2

Vent Tiles are available in a range of colours to suit the main tile selection.