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Newton 109-LM is a radon gas certified, flexible, single-component, cold-applied, seamless rubber waterproofing membrane used primarily for the external waterproofing of earth retaining structures such as basements and foundation walls. Newton 109-LM is also adept as a detailing membrane for the termination and jointing of other Newton waterproofing products, and is the perfect primer for the adhesion of butyl products to concrete and mortar. Newton 109-LM is extremely puncture resistant with elasticity of 850% and a 95% recovery memory. The membrane becomes fully engaged into the substrate to prevent water tracking and is suitable for all below-ground and earth-retained structures, ranging from domestic basements to the largest civil engineering projects. Newton 109-LM is available in two variants: Medium Viscosity, for use in warmer temperatures, and Low Viscosity, for when it is cooler. Newton 109-LM is also a constituent product of the Newton HydroBond® System supported by BDA Agrément® BAB 16-031/03/A and is accepted by the NHBC as a suitable waterproofing system for Type A Waterproofing to Grades 1, 2 and 3 – BS 8102:2009.