Prelasti EPDM Roofing & Terraces

This landmark site which forms the headland at Penmaenrhos was formerly the home of the iconic Hotel 70 Degrees. Built in 1972, and so-called because of its unusual internal geometry, the 70 Degrees was a well-known local landmark to Colwyn Bay residents and visitors. The view from the restaurant of the curve of the bay and the sweep of the beach below was a special feature of the hotel, which has now been adopted by the recently developed “View” apartments by Blue Bay Homes. AAC Waterproofing were appointed by the building contractor -Ravenscroft – to supply and install the roof waterproofing on the apartment complex, together with perimeter parapet cappings and concrete flagged terraces. The chosen roofing system for this prestigious project was Prelasti EPDM, which is prefabricated into custom-made sheeting in AAC Waterproofing’s Anglesey plant. The Prelasti membrane was applied to all of the flat areas, fully bonded to a 130mm PIR insulation board which itself was mechanically fixed to a plywood deck to falls. Fixing manufacturer pull-out tests verified the number of fixings to be used, and a generous margin for safety was added.

After installing the roof waterproofing and dressing the parapets, we fixed pre-formed EPDM collars around the balustrade posts, sealed with T89 Liquid Rubber. The terraces were finished with ‘Natural Grey’ Tobermore 450 x 450 mm textured

Photo courtesy of Blue Bay Homes

Powder-coated aluminium prefabricated parapet flashings, to the architect’s specified RAL colour, completed both the perimeter security of the roof covering and aesthetics of the building lines. Concrete patio flags to the gable-end terraces allow the tenants to take recreational advantage of the buildings lofty location. With a sheer cliff drop at the rear of the site of around 70m, and the roofers working at a additional 10m of building height, the exposed location gave all installers an exhilarating project on which to work .

Prelasti EPDM sheeting is the ideal roof waterproofing for this particular exposed location. Situated on the headland, 90m above the beach below, the membrane is fully resistant not only to UV radiation but also the salt air from the sea, and the activities of the ever-present seagulls. When personnel access is required to the exposed roof areas the textured slip-resistant surface provides additional security for operatives (many single-ply membranes have smooth and slippery-when-wet surfaces).