Neoizol undertile felt is a polymer-bitumen roll with a self-adhesive layer on one side, and a coating and quartz sand on the other side.
The undertile felt waterproofs the roof pie. Thanks to its high physical and mechanical properties, Neoizol could be used in all climatic zones.
The base of NEOIZOL OS self-adhesive undertile felt is rupture-resistant polyester. The polymer-bitumen component of NEOIZOL OS increases its service life manifold. In contrast to rolls based on oxidized bitumen, the polymer-bitumen undertile felt NEOIZOL OS remains elastic even under temperatures below 15 degrees Celsius and has much higher heat resistance.
|Breaking strength, N
|Elongation at break, %
|Weight, 1 kg\ sq m.
|Heat resistance, ˚С