Protect A1

Protect A1® Underlay

Protect A1® is a third generation roofing underlay which has been developed specifically to overcome the disadvantages of traditional Type 1F felts and second-generation plastic sheet materials.

  • Proven time saving over Type 1F and 5U felts.
  • Can be used as a temporary roof covering.
  • Completely waterproof.
  • Excellent nail tear and tensile strength.
  • Has unrestricted use for wind uplift in all exposure conditions in the UK and Ireland. Suitable for zones 1-5 at 345mm batten gauge.
  • Easy to cut, clean and light to handle.
  • Can be used in all pitched roof constructions.


Protect A1 is both CE marked and BM TRADA Certified.