Protect1F
A non breathable roof membrane.
Protect 1F is a high-performance, non-breather roofing underlay specifically designed for ventilated pitched roofs, requiring ventilation in compliance with BS 5250:2021. This universal non-breathable underlay suits a variety of pitched roof constructions where conventional ventilation methods are preferred.
Regulatory standards like Part L, the Future Homes Standard, and NHBC guidelines emphasise proper ventilation in integrated solar roofs to prevent moisture build-up and ensure durability.
Cromar’s Protect 1F is a high-performance, high-vapour-resistance underlay is a modern alternative to traditional bituminous based (type 1F) roofing felts which means that is it also suited to roofs with integrated Solar PV panels, it is necessary to follow the appropriate ventilation guidelines to ensure compliance with BS 5250 requirements.
Offering a cost-effective, compliant solution, Protect 1F ensures safe, efficient, and durable solar panel integration.

Colour | Size | Product Code | Box Qty | Barcode |
---|---|---|---|---|
– | 1m x 15m | TPF/15 | 5036684002578 | |
– | 1m x 45m | TPF/45 | 5036684002561 |