Eurotop W35 Wall Underlay

Product Description

Frame Protection Systems W35 is a high performing roof and wall underlay which provides both interim and permanent weather protection plus moisture control within the wall or roof structure. FPS® Weathertight® is certified to allow internal work to proceed to completion before the roof and wall claddings are installed.


  • Weathertight – Continue internally to completion without exterior cladding

  • 100% Waterproof – Non-absorbent and highly permeable

  • Windproof – Can be used in extra high wind zones and SD unsupported

  • FR Rated – All membranes have an FR index of 3 or less, therefore can be installed without restriction on all buildings

  • Airtight – Avoid heat loss from uncontrolled air movement

  • Codemarked – Be confident our system works. No need to source outside materials – we will tell you what you need if you send through a plan

  • FREE Fixing Tool – Included in our Starter Pack, the Manual Stinger Gun is absorbed in the cost of everything else in the box. This ensures you have everything you need on day one!

  • Durable / Strong – No blueband or insulation restraint required if installed taunt