Sika BentoShield Max LM, Polymer-modified Bentonite Waterproofing System, Exterior

Sika® BentoShield® Max LM is a self healing waterproofing membrane that is resistant to contaminated soils, forming an automatic mechanical bond to freshly poured concrete. Consisting of two polypropylene geotextiles, a woven fabric and non-woven fabric, enclosing prehydrated homogeneous layer of granular sodium bentonite at a minimum weight of 5000g/m². The two geotextiles are interlocked by a needle-punching process forcing fibres from the non-woven layer through and beyond the woven layer. This process contains and confines the polymer modified bentonite granules and forms a physical link between the geotextiles. A flexible polyethylene layer is integrally bonded to the non-woven geotextile.

• Qualified waterproofing tanking membrane in accordance with BS8102:2022
• Water tightness of the laps tested to BS EN 1928.
• Designed to offer protection in areas subject to changing geological conditions such as flood plains, areas of soil settlement and brown field constructions.
• Application ensures performance stability in high water table environments and constructions which are subject to future alterations in water levels.
• An effective barrier against ground water in saline environments.
• Easy to install, no primers required.
• Easy to install, no protection boards required.
• Can be applied in temperatures below 0°C
• Will self heal when subjected to a head of water ¹ .
• Can be applied during conditions of high humidity.
• Major constructions benefit from speed of application.
• 0.3mm PE backing gives effective Radon barrier in accordance with BRE211.