Aluflow Gutter Deepflow Union - (RAL Colours) 
Permavent use the very latest technology from the medical industry to encapsulate the highest grade hydrophobic film inside the very highest quality spunbond polypropylene layers. Moreover, unlike other companies, who simply stick the different layers together, Permavent membranes are manufactured in a single process that greatly improves the quality and integrity of our membranes. Additionally, this 3 in 1 process means that Permavent offer the best performing breather membranes in their class with superior strength, breathability, flexibility and durability.
- High performance breather membrane
- 120 g/m2
- Black on both sides
- Value membrane
- Fully BBA Certified
- Tested to BS5534:2014 +A2:2018 wind loading
- 3 layers membrane
- UV stable for 3 months
- For use on any types of roofing/walling applications
