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We're installing an underground drainage system for roof runoff water. This home just had a couple of these. There an easy, inexpensive way for homeowners to try to get the water away from their house, but you can get them out to like 10 feet in length. It's a horrible idea. Stay away from them. Don't buy them. Plus the sun dries them out and they split right in here. We're trying to get the water away from the side of this house. It's pretty flat in here. That one downspout is going to run 95 feet.

In a two-story house. We're going to be at about nine PSI in a moderate rain by the time we get to the bottom. That's pretty good. I like that. I'm really happy about that. Now, really, really heavy rain, that increases the higher the volume of water, the more pounds per square inch. 

We are using dual wall corrugated pipe. It's smooth on the inside corrugated on the outside. In Michigan, you want a pipe that can withstand the freeze and thaw cycles. So, the corrugated pipe allows it to be flexible.  But, when you buy the dual wall, you reduce the friction. The shingle gravel just rolls right through. It's not a problem. [...]

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French Drain Man – Michigan’s Yard Water Drainage Experts. Masters in the art of constructing contained French drain systems & curtain drain systems that and fix your yard drainage problems for years to come. Over 30 years’ experience in solving yard water drainage problems in Oakland, Macomb, Lapeer and St. Clair Counties.

French Drain Man / Sherwood Landscape Construction, LLC
122 S Rawles St
Romeo, MI 48065
248-505-3065

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