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Re: Waterproofing system - weep holesFrom: info@builderswebsource.com
Category: Drainage/Waterproofing
Remote Name: 172.163.169.142
Date: 04 Jul 2002
Time: 12:22 PM
CommentsWe are not aware of any long-term studies that point to long-term undermining of the foundation due to weep holes. Many factors could influence this. For example, if the soil is sandy or silty, some of this could gradually wash through the weep holes into the water collection system, forced through by hydrostatic pressure. However, rocky or clayey soils are less likely to cause trouble. Furthermore, sometimes filter fabric can be used to allow water, but not soil, to pass through. Chances are your basement dewatering system was installed after the fact. The best solution is always to properly install an exterior waterproofing membrane (such as Bituthene or Tamko), followed by a protective barrier and subsurface drainage system (such as a french drain). Now that you've drilled holes allowing water to freely flow into the basement, you must rely on the newly installed drainage collection system and accompanying sump pump to evacuate the water. A failure of the sump could lead to basement flooding, which is why we always recommend a redudnant pump with battery back-up in cases like this. If you have further concerns about the integrity of your foundation, we would question the company that did the work for you and carefully read the warranty. Builders Websource.
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