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Technical Dayta Sheet Compedium

CONTENTS INDEX 484 Technical CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Data Sheet Index® Defend H - Anti Root 4mm Elastomeric, torch applied ‘plant root repellent’ membrane, reinforced with rot-proof single strand spunbond non-woven polyester fabric Uses Defend H is always applied as the last waterproofing layer in contact with the earth for gardens, foundations, underground garages and tunnels covered with soil, road structures and roofs under gravel etc. When waterproofing roof gardens for instance, it is used as the top layer of a system, the first layer being a polymer-bitumen membrane reinforced with ‘nonwoven’ polyester fabric and the second being Defend H which is placed astride the overlaps of the previous layer and full bonded with the torch. Defend H is used in all waterproofing systems in contact with the ground or where there is a risk of the system being attacked by roots. Advantages „ Index membranes have over 25 years of proven performance throughout Australia „ Specifically selected for Australian conditions „ Resistant to roots including the overlaps „ 4mm high performance membrane „ Low VOC - 7 grams per Litre „ Handles ponding and permanently wet conditions „ No curing times. Instantly waterproof „ Does not disperse dangerous substances in the environment „ Puncture resistant Description Defend H is an elastoplastomeric polymer-bitumen waterproofing membrane, with an antiroot additive, reinforced with a ‘non-woven’ single strand spunbond polyester fabric for protecting roof gardens, sunken works and gravel covered roofs. The antiroot properties are obtained by adding phenoxi fatty acid ester, a specific antiroot agent, to the polymer-bitumen compound. Once applied, Defend H forms a continuous barrier against roots, even along the overlaps, due to the fact that the entire compound which forms the waterproofing mass is activated. Defend H is resistant to roots throughout the entire thickness of the membrane, including the overlaps, where the antiroot barrier is formed by a single 4 mm thick layer. Defend H does not contain films or metallic foil and is therefore flexible and malleable during application. The antiroot additive does not migrate in the ground nor is it washed out by water and it is resistant to the heat produced by torch bonding the overlaps. Defend H is made of distilled bitumen, selected for industrial use, with a high content of elastomeric and plastomeric polymer additives to obtain a phase inversion compound whose continuous phase is formed by polymers in which the bitumen is dispersed, where the characteristics are determined by the polymeric matrix and not by the bitumen even if this is the most consistent ingredient. The performance of the bitumen is therefore incremented along with the durability and the resistance to high and low temperatures while the already optimum adhesive and impermeable qualities of the bitumen remain unchanged. The reinforcement of the membrane consists of a ‘nonwoven’ June 2014 Page 1 single strand, high weight, polyester fabric which is isotropic, rot proof, thermally fixed, very strong and has a notable ultimate elongation combined with an optimal resistance to puncture and tearing. The upper face of Defend H is coated with a uniformly distibuted, fine serigraphed talc, a patented treatment which makes it possible to quickly unroll the rolls and install the membranes with the reliable and quick welding of the joints. The underside of the membrane is coated with Flamina, a plastic film that melts when torched and which is embossed both to obtain the pretension and therefore the optimal retraction of the film and also to offer the torch a greater surface area for faster and more reliable installation. When the membrane is loose laid or spot bonded, the embossing diffuses the vapour. The reinforcement and the waterproofing mass are resistant to chemicals, humic acid and fertilisers. Polymer-bitumen and embossed Flamina Stabilised ‘non-woven’ polyester fabric Polymer-bitumen coating with talcing (with root inhibitor) DEFEND H ANTI-ROOT June 2014


Technical Dayta Sheet Compedium
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