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Tor Coatings, the leading supplier of protective coatings for buildings has completed a major roof refurbishment for Durham University.

The project, which involves waterproofing a combined roof area in excess of 6,000 square metres, has been completed with our flagship Elastaseal™ system.

The existing asphalt roof membranes had been degraded by thermal fluctuations that had resulted in water ingress, which was becoming increasingly problematic. As a roofing substrate, asphalt is naturally susceptible to the effects of the weather and repeated freeze-thaw cycles cause it to blister, rivel and ultimately crack, opening the floodgates for ponded water to enter the building.

The University required a long-term solution to the problems it was experiencing and refurbishing with asphalt was not a desirable option, with the biggest negative associated with the substrate being that it must be applied in a molten state.

Hot works on roofs pose a serious fire risk and cannot be undertaken while a building is occupied. Elastaseal™ from Tor Coatings, provided the most practical and effective long-term solution. Elastaseal™ is a cold liquid-applied waterproof coating system that can be applied directly over an existing roof membrane to prevent roof leaks for up to 25 years, depending on the specification.

Elastaseal™ works by seamlessly encapsulating the existing roof substrate, creating a new membrane that is not only 100% waterproof but also allows the roof beneath to ‘breathe’ due to its vapour permeability.

The Elastaseal™ coating system was applied to the University roof by brush and roller, just like a regular paint. It offers the significant advantages of no on site mixing and no need for naked flames as with comparable hot work bitumen roofing systems. A future site visit will take place, with the option to extend the guarantee by solvent wiping and applying an additional topcoat, giving the client peace of mind for decades to come.

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Flat Roof Refurbishment – Durham University