Engineered for ultimate durability, Stoneleaf Sovereign is a high-performance roof underlay specifically designed for low-pitch roofs down to 5°. Its advanced composite structure, blending polyester and polypropylene non-woven fabrics with a high-performance polyurethane film, provides superior mechanical strength and robust weather protection. For faster installation and a secure, weather-tight seal, Stoneleaf Sovereign features integrated 40mm adhesive tapes at the laps.
The Stoneleaf Sovereign Underlay is a 1.5m wide roll, is 25m long, and covers 37.5m2
Stoneleaf Sovereign Watertight Underlay 330gsm 25m x 1.5m
- Dimensions:
- Roll Length: 25m
- Roll Width: 1.5m
- Weight: 330g/m² (Roll Weight 6kg)
- Material: Polyester, Polypropylene, TPU
- Integral Taped overlaps
Download the technical data sheet for the Stoneleaf Sovereign Underlay here
Speak to our technical department for full specifications on low pitch applications Contact Us



















