Waterproofing crawlspace


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Old 11-15-09, 02:55 PM
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Waterproofing crawlspace

Ok so I am a landscape contractor and I want to do some waterproofing around my home. I have done several french drains, but never around a house. I am planning on doing a french drain w/ drain tile around the house and running all my gutters away from the house. I have water in my crawl space when it rains and it is damp when it is not raining.

Do I need to backfill with gravel all the way down to the footer? Do I need to have the drain tile at the bottom of the footer? Do I need to have the french drain run in front of the garage slab and porch slab? What type of coating would you put on the foundation?

I think I am going to use some type of pvc for the drain tile, I really don't have much respect for the corrugated pipe any more... at least in the 4" size. Any help would be appreciated.
 
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Old 11-16-09, 02:15 PM
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The best way is to seal the foundation with a membrane down to the footer, gravel & all. Then install the french drain, if it's still needed. Of course, route the gutters & pitch the dirt properly.
 
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Old 11-16-09, 06:39 PM
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