Exterior Drain TileWhen our Exterior Drain Tile is installed, we begin by excavating your foundation to the below the footing. We then install our perforated piping system and connect it to a sump pump in your basement. We then use our Delta MS Wall Membrane to cover the exterior wall, which will keep any moisture or water from penetrating your foundation walls and will channel it to the drain tile system. Lastly, we cover the drain tile with washed stone and and backfill the dirt to the proper height against the foundation.
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Perma-Seal has served Chicagoland and Northwest Indiana for over 30 years.
Perma-Seal has helped over 250,000 homeowners just like you.
Perma-Seal is recommended by Lou Manfredini, National Home Improvement Expert. 
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Perma-Seal has earned an A+ rating with the Chicago Better Business Bureau.
Perma-Seal has earned an Angie’s List Super Service Award for the last 9 years.
Perma-Seal has been a winner of the BBB Torch Award for Marketplace Ethics.
Perma-Seal’s Roy Spencer received the Ernst & Young Entrepreneur of the Year Award in 2003.
Perma-Seal was named a 2011 Chicago Tribune Top Workplace in Illinois.
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