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Polyglass Felting Systems
What is a built up felting system ?
A built up felting system is a method of weather proofing flat roofs by using 3 layers of bituminous roofing felt which is bonded directly onto the previous layer
What is the 3 layer process ?
- Sand surfaced 3B underlay felt nailed into the deck
- 2mm plain felt heated onto the previous sand faced 3B layer
- 4mm mineral felt heated onto the previous 2mm plain layer
How long do built up felting systems last?
- 15-20 years
What is the guarantee?
- 10 year guarantee