Pro Breathing Underlayer

A roofing product designed for sloping roofs that have been insulated all the way from the eaves to the ridge.
Pro Breathing Underlayer is laid directly on the insulation. It can also be laid directly on underlay that allows diffusion (rough panels and plasterboard). Pro thus acts simultaneously as underlay and a wind barrier.
This makes building work on roofs much easier because no air gap is required between the traditional underlay and the wind barrier.
The underlay consists of a spun felt membrane of polypropylene fibre laminated with polypropylene felt.
Pro is supplied in lightweight rolls and is thus easy to handle. It also means that the product requires little storage space on a building site.
A simple and extremely functional solution.
The product can be laid as soon as the rafters are in place.
The minimum recommended pitch required for using Pro Undertak is 15°.
Detailed laying instructions can be found on the roll and in a separate brochure.
• Windproof, waterproof and breathable – all at the same time
• Simple, quick and effective
• Lightweight
• Economical solution – advanced materials technology
Pro has been granted Technical Approval by SINTEF Byggforsk (No. 2134).