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 ✓
Rose Roofing | Underlaters 1F
A1 Impermeable Felt HR Roofing Underlay by Protect - 45m x 1m Roll | Roofing Superstore®