This is a "on the footer" system - notice that even though there is a wall vapor barrier tucked behind this system it still has an open back which can allow radon, moisture, bugs to come up into the basement and into your home.
Basement Waterproofing is what our industry calls themselves. The proper term for what most basement waterproofing contractors do is really basement water control. If you are a homeowner with a wet basement it is important that you make sure your contractor installs a closed drainage system. DO NOT ALLOW a contractor to put in a sub floor drainage system with an open back channel. These open systems are what contractors have been installing for years. These types of systems allow radon to enter your basement (an odorless gas that the EPA estimates kills 21,000 people a year in the US)
If you want to see a closed sub floor drainage system that protect your home and your family visit http://www.grateproducts.com/
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