Wallbarn Protecto-Drain 8 Geo Drainage Membrane 15m x 2m Description Made from high density polyethylene (HDPE), this hard wearing, flexible membrane is designed to direct water away from the surface of the structure towards the appropriate drainage system. It is very to... Read More
Wallbarn Protecto-Drain 8 Geo Drainage Membrane 15m x 2m
Description
Made from high density polyethylene (HDPE), this hard wearing, flexible membrane is designed to direct water away from the surface of the structure towards the appropriate drainage system. It is very tough but lightweight and easy to handle, making it very adaptable and suitable for a large number of applications. It is also completely safe and contaminant free, and can be used safely with water courses.
It is ideal for vertical surfaces and protects the waterproof membrane from abrasion and puncture damage caused by backfilling. Its cupped structure creates a permanent air gap between the wall and the backfill which helps to reduce pressure points and helps in the ventilation of the building and problems of damp. Gravity will encourage the water to flow down the surface and into the sump or drain constructed beneath. It is also an effective damp-proof layer on horizontal surfaces. It is fungus and rotproof and completely safe with drinking water.
Protecto-drain G8 is suitable for areas with a much greater amount of water passage and pressure through the ground. It has a 100gsm geotextile fabric bonded to one side. This gives additional protection to the membrane and also helps to filter out particles but allow the water to pass through the fabric and into the air gap drainage chamber. With moisture passing through the geotextile but no soil moving, the area around the structure is effectively drained but the ground remains stable and firm, greatly reducing the risks of subsidence or hydrostatic pressure building up. This membrane is designed for a water management, rather than water prevention system. Any subterranean structure will come into contact with significant moisture, so a way to channel this moisture away from the concrete is required. A suitable exit for the water should always be designed into the waterproofing system.
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