Redland Spiritech 400 2S Vapour Permeable Membrane Felt Underlay (1.5m x 50m Roll)
Product code: RKM53700
A four-layer, vapour-permeable underlay designed for pitched roofs.
Product description
The Redland Spirtech 400 2S membrane is made from spun bonded polypropylene, boasting exceptional strength, durability and hassle-free installation. It offers an innovative solution from Redland as a heavy-duty underlay featuring a unique adhesive system. This system brings horizontal laps together, creating an impervious membrane that persistently resists wind uplift.
It is perfect for both warm and hybrid roof systems, where wind penetration could compromise roof insulation performance at rafter levels, as well as traditional cold roofs. It effectively counters wind uplift forces, ensuring reduced wind loading on roof tiles.
Product details
Length
50m
Width
1.5m
Underlay Colour
Grey
Brand
Redland
Manufacturer Brand Name
BMI Group
Manufacturer Product Code
10003118
Key features
- Heavy-duty underlay with a unique two-strip glueing system for horizontal laps
- Glue strips, ideal for high and low outside temperatures
- Heavyweight underlay with grid reinforcement
- Easy to bond joints
- Exceptional protection against falling objects
- Superior water-tightness after abrasion