Around 1000 metres of T-Pren gutter expansion joints from Matthew Hebden were supplied for the 28,000 sq.m. curved roof of the Rocky Ridge recreational centre in Calgary, Canada.

The centre houses two swimming pools, two ice rinks, three gyms, a running track and library.

The wide curved gutter required long special lengths of T-Pren, 9 – 18m long, which were installed in pairs to provide double the expansion movement. T-Pren forms a waterproof expansion joint, which eliminates the standard step detail and results in fewer rainwater outlets.

T-Pren is a composite material with a centre section of neoprene to provide the expansion and contraction bonded to metal on either side, which is then soldered or welded onto sections of the metal gutter. The bonding is done under strictly controlled factory conditions in accordance with ISO 9001 quality standards.