Torch On Roofing Underlay Sheet 1m x 5m – Sand Finished Bitumen Polyester Base for Flat Roofs & Felt Systems

• Polyester Reinforcement: Strong polyester base provides flexibility and dimensional stability during installation
• Modified Bitumen: APP-modified bitumen coating delivers high softening point and consistent performance
• Torch Application: Designed for professional torch-on installation on compatible roofing systems
• Sand Surface: Sand-finished face improves bonding and handling during fitting
• Detail Friendly: Easy to cut, shape, and detail around edges, corners, and penetrations
• Durable Build: Flexible yet tough construction suited for flat and low-slope roofs

Looking for a torch on roofing underlay for flat roof systems and felt installations? This bitumen underlay sheet is designed for use as a reliable base layer beneath torch-applied roofing membranes. Built using a bitumen underlay sheet construction with a reinforced polyester core, it delivers strength, flexibility, and stability during torch application. The sanded surface finish supports controlled bonding, while the APP-modified bitumen coating provides a high softening point for dependable performance in exterior roofing environments. Ideal for use on flat roofs, garages, sheds, and similar structures, this torch on roofing underlay is easy to handle, cut, and detail. It integrates smoothly into multi-layer felt systems and is suitable for both trade and experienced DIY use where a strong roofing underlay layer is required.