Perforated underlay for partially bonded system .
The partial bonding of the waterproofing is secured by the ratio of the perforations and the anti-adherent polyester underface of PERFADER.
MAIN USES
Partial bonding waterproofing underlay, for torch applied systems.
Underlay for car-park roof waterproofing system.
Underlay for granule finished systems for inaccessible roofs.
DESCRIPTION
Perforated bitumen underlay, silica sand surfaced, polyester film underfaced.
Rolls: 20 x 1 m.
Weight: 1 kg/m².