Mike Lamb Posted May 17, 2016 Report Share Posted May 17, 2016 Permaseal and others offer this option for leaky block basements. I have seen bad attempts at this and the method seems ridiculous. Thoughts? From Permaseal: The good news is we have a permanent solution for these types of walls. It will require a new Interior Drain Tile System and a proper sump pump arrangement to handle the amount of water we need to control. A wall treatment will also need to be installed so that any continued seepage or moisture is channeled directly into the floor drainage system. Click to Enlarge 15.28 KB https://www.permaseal.net/services/base ... tions.html Quote Link to comment Share on other sites More sharing options...
kurt Posted May 17, 2016 Report Share Posted May 17, 2016 Seen them, don't like them, they do make the interior dry, albeit at the expense of washing out the foundation. No one seems to want to do it the right way, which is DP on the exterior. The idea seems to be catching on in Chicago....where we like to do things backward. If they're on an old stone foundation, one gains the benefit of not having to watch while it completely destroys the foundation. Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted May 17, 2016 Report Share Posted May 17, 2016 With the exception of the barrier on the wall, retrofitting interior drainage systems has been the norm here for 50+ years. Generally don't seem to see too many problems. Excavating at the exterior with basements is typically cost prohibitive. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted May 18, 2016 Author Report Share Posted May 18, 2016 I understand the interior drain which will keep water from running on the floor. Its the plastic over the wall I don't get. All it does is hide the water and condensation running down the inside of the foundation. I could not see putting a finished wall over this stuff. Quote Link to comment Share on other sites More sharing options...
kurt Posted May 18, 2016 Report Share Posted May 18, 2016 I've got a couple clients that went with the system and put finished walls over it. It can "work", I guess, but if the detailing isn't excellent in the extreme, then that water can be directed places we can't see it. Exterior systems are cost prohibitive, true. No one seems to care anymore about what happens in 40 years, but I have a nagging reticence about using these systems because I happen to care about what happens in 40 years. Maybe I should stop caring. Problem solved. Quote Link to comment Share on other sites More sharing options...
Garry Sorrells Posted May 18, 2016 Report Share Posted May 18, 2016 I haven't seen one taken down that has been up for a while. My curiosity is the development of mold and fungus between the plastic and the foundation wall. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted May 18, 2016 Author Report Share Posted May 18, 2016 Not just that. What happens to masonry when it stays damp and wet on both sides year after year? Its like fixing a roof leak from inside the attic. Quote Link to comment Share on other sites More sharing options...
kurt Posted May 19, 2016 Report Share Posted May 19, 2016 Yes, both those things. Mold farm, and foundation saturation. Can't be good. Quote Link to comment Share on other sites More sharing options...
Steven Hockstein Posted May 19, 2016 Report Share Posted May 19, 2016 Yes, both those things. Mold farm, and foundation saturation. Can't be good. I agree. It would be interesting to see what happens behind this system over time. Anyone out there have any real life experience in the forensic analysis of this system? Quote Link to comment Share on other sites More sharing options...
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