The 2.4m Dryfix 400mm Valley Slate 55mm Upstand (DVS2) is a high-performance GRP (Glass Reinforced Polyester) dry-fix valley trough engineered specifically for slate roof construction. Designed as a modern, mortar-free alternative to lead valleys, it forms a secure, watertight drainage channel along roof pitch intersections.
 
Featuring a 55mm central upstand, this unit is optimized for flat natural and synthetic slates, ensuring efficient water shedding while maintaining a flush, low-profile appearance across the roof plain. At 2.4 meters long by 400mm wide, the trough offers an easy-to-handle length that speeds up site handling and under-batten fixing, significantly reducing installation labor compared to traditional leadwork.
 
Manufactured to deliver high tensile strength and thermal stability, the DVS2 will not warp, rust, or crack under extreme weather and UV exposure. Its durable GRP composite construction provides long-term, maintenance-free weatherproofing while completely eliminating the scrap value and theft risks associated with metal flashings.
 
Life expectancy of over 30 years
Convincing simulation of traditional lead
Light and easy to transport, handle and install
Virtually maintenance-free
Manufacture assured to BS EN ISO 9001
BBA Certification (No. 07/4492)
The cost-effective alternative to lead gutters