Monarflex® Necoseal is a virgin blend Co-Polymer polyethylene membrane, which remains flexible at low temperatures and stable at high temperatures. When used as part of the full Monarflex® radon protection system it provides an effective radon, air-tightness and moisture seal in the foundations of a new building.
Monarflex Necoseal is a loose laid un-reinforced polyethylene membrane for horizontal ground supported or suspended slab applications in domestic housing without hydrostatic water pressure, 0.3mm and available in 4 x 20 m roll size.
Necoseal should be used in conjunction with Xtra-Load DPCs in all masonry walls.