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Leaking off the shelf GRP fibreglass roof covering replaced by Advanced Roofing Solutions

Our customers had an off the shelf, non-BBA approved GRP fibreglass roof covering installed onto their new extension by poorly trained installers and had been suffering leaks ever since.

Following inspection we discovered a number of faults including pinholes and areas where the fibreglass had delaminated from the roof deck boards and topcoat was flaking.

The project involved removing the existing GRP fibreglass roof covering, roof deck boards, inspection of the thermal insulation layer and checking that a vapour control layer and sub-deck was present. Our installers then carefully re-constructed the roof, installing a new tongue and grooved OSB3 roof deck and installed the new Topseal HD GRP fibreglass roof covering.

Topseal HD is a BBA approved and certified GRP roof covering that forms a completely seamless waterproofing system that is guaranteed for a period of 30 years.


The new roof coverings are now guaranteed and have been registered through the NFRC Competent Person scheme to confirm compliance to building regulations.

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