First of all the old roof is stripped down to the existing joists. We remove not just the felt but the decking also. Depending on the size of the roof a skip may be required for the waste. This will be organised by SBS Roofing.
New external grade OSB (3) 18mm BBA. approved boards are then fixed to the joists. If the roof requires additional fall new firrings will be put in. This will help to elliminate any puddling effects on refurbished roofs. However this might not totally get rid of puddling but as GRP roofing products are totally seamless with no joints, glue or welds no water will penetrate the roof from the deepest of puddles. Unlike felt a GRP roof is not absorbent therefore will not hold water. Any water that does collect will soon evaporate through normal weathering.
A primary basecoat of polyester resin is then applied. There is no heat needed for any of our process"s so there is no fire risk.
All rainwater products are then installed, including guttering, downpipes, fascias and soffits. The edges are then trimmed with pre-formed GRP trims and sealed.
The roof is then applied with 600gsm chopstrand fibreglass matting. A secondary layer of polyester resin is then applied to ensure a strong and completely watertight barrier.
Finally a topcoat in a choice of colour is applied, however we do recommend light grey as this helps to eliminate thermal gain. A non slip finish can be applied if you wish. You now have a high performance covering that looks superb and compliments your home.
Skylights and ventilation systems i.e. mushroom vents can be added and the fibreglass is taken up the sides to ensure a completely watertight seal.
The long-term benefits are what really counts as your new roof is maintenance free and no matter what the weather your home is protected for a very long time.
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