APP Modified ANTIROOT Bituminous Membranes(R) APP ANTIROOT is a plastomeric Modified Bitumen Membrane used for waterproofing roof gardens and green areas. It is manufactured in a high-tech calendaring process, which involves the saturation and coating of a polyester carrier with an APP polymer-modified bitumen compound. Anti-root additives are included in the compound to allow the membrane to better resist the piercing force created by the growth of roots. This compound, thanks to its special formula, features an excellent resistance to UV ray ageing and allows the membrane to be walked on during application. The polymer additives are used to improve the thermal, chemical and ageing properties of the bitumen compound. Meanwhile, the mechanical characteristics such as tensile strength, elongation and tear resistance are boosted by the non-woven polyester carrier, which acts as a reinforcement to the product.
l Excellent resistance to root penetration
l Absolute impermeability to water
l Thermal resistance under a wide range of temperature fluctuation
l Excellent U.V. resistance when surface is finished with slates
l Ease of adhesion to a wide variety of surface