The Gutter Expansion Joint
T-Pren is a waterproof expansion joint for metal gutters. It eliminates the need for the traditional step detail, and reduces the number of outlets required. It is available in all metals – aluminium, copper, lead, stainless and zinc. T-Pren was developed to overcome the thermal expansion problem of long gutters. It consists of two metal strips connected by a high quality neoprene expansion joint, and by using a special bonding process it has been proved in 30 years of service to have a long life in all atmospheric conditions.