Valley troughs

Valley troughs are roofing components that channel rainwater safely away from the junction between two roof slopes. Traditionally, valleys were constructed from lead or tiles, but GRP valley troughs—made from glass-reinforced plastic (also known as fibreglass valley troughs)—are now widely used. These modern solutions are lightweight, durable, and easy to install, making them popular in residential and commercial roofing projects across the UK. They commonly also form part of the dry valley system, also known as dry verge roofing.

When installing a GRP valley trough, builders benefit from reduced installation time and improved weather resistance. Unlike older methods, such as cement or mortar bedding, a dry valley trough doesn't crack easily due to weather changes or movement in the roof structure. GRP valley troughs suit new builds, refurbishments, and heritage projects, providing reliable drainage without compromising historical roofing styles.

Use Buildbuddy to quickly compare prices and find the best deals on valley troughs for your next roofing job.