A economical lightweight breathable pitched roofing underlay for warm and cold rafter roofs in none exposed sites. Product is 90 g/m2 and available in 1 x 50m and 1.5 x 50m roll sizes.
Monarperm 400 is a lightweight economic alternate breathable pitched roofing underlay made from two layers of spun bonded polypropylene (PP), which is sandwiched in a special formulated polypropylene (PP) microporous film.