The Calder T-Pren 400mm x 3m Lead Expansion Joint is an essential high-performance solution for flat roof detailing, parapet walls, and long gutter runs. Designed to effectively manage the natural thermal expansion and contraction of roofing materials, this professional-grade joint prevents buckling, cracking, and premature failure in leadwork installations.

This premium expansion joint comprises two durable lead strips seamlessly connected by a high-quality, double-sided, and vulcanised EPDM synthetic rubber band. The advanced vulcanisation process ensures a completely watertight, flexible, and permanent bond between the lead and the rubber. By absorbing significant structural and thermal movement, T-Pren allows roofers to lay longer, continuous runs of lead without the frequent need for traditional drip steps. This drastically simplifies your gutter design and saves valuable labor time on site.

Manufactured by industry leaders Calder, this T-Pren joint is built to withstand extreme weather conditions, heavy UV exposure, and severe temperature fluctuations without degrading. To give you and your clients complete peace of mind, every gutter expansion joint is supplied with a comprehensive 10-year manufacturer guarantee.