NOVALL-I A is a plastomeric modified bitumen waterproofing ANTI-RADON membrane (APP), industrially manufactured by impregnation of two reinforcements with the waterproofing compound based on distilled bitumen modified with special polyolefin polymers, very low permeability to noble gas, which gives to the compound high technical characteristics.
The two reinforcements are fiberglass and alluminium foil, impermeability against Radon and water vapour and thermal stability.
Shaping of sheets, straightness, dimensional and surface uniformity are accomplished by hot calendering of the mass at hot melt fluid state.
The upper surface is coated with anti-adhesive amorphous sand. The lower surface is coated with a thermo-fusibile polyolefin film.