Roof repair - can I use torch-on felt nailed only, as underlay (instead of 1f)? - Roofing, Tiling & Slating - BuildHub.org.uk
Cromar Protect 1F Non-Breathable Underlay
Building Guidelines | Tiling, Slating
Is Roofing Felt Necessary For My Property?
Monartile 1F Bituminous Roofing Underlay by Decra Roof Systems
Klober - An alternative to 1F felt, Sepa Light is Klober's non-breathable roof underlay for traditional ventilation, suitable for ventilated pitched roofs.. ✓ Strong and lightweight alternative to traditional 1F felt ✓