Matthew Hebden

The T-Pren gutter expansion joint was used extensively on the complicated roof layout of the Royal Opera House, to provide waterproof in line expansion joints and so reduce the number of outlets required.

Nearly 1000 metres of T-Pren gutter expansion joints were installed on the 28,000 sq.m. curved roof the Rocky Ridge recreational centre in Calgary, Canada. The wide curved gutter required long special lengths of T-Pren, 9-18m long, and were installed in pairs to provide double the expansion movement. T-Pren forms a waterproof expansion joint, which eliminates the standard step detail and so reduces the number of rainwater outlets required. T-Pren is a composite material made from neoprene and metal bonded under controlled factory conditions to ISO 9001 quality standards.

Tegola's black asphalt shingles look like slates and a special kiln firing process ensure a fade free appearance. Tegola only weight 10.5 kgs/sq.m., a quarter of the weight of concrete tiles, and this produced economies in the support structure, and their economic price led to significant cost savings. Tegola shingles have an excellent life span as they are stronger than the British Standard requirements, and have a design life of 35 years and have a top fire rating.