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Defend H: 4mm 1m x 10m roll

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 non-woven 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.