Interior Basement Drainage Systems

the Perma Dry Waterproofing foundation drainage system is designed to lower the water level under the slab, helping to prevent water from rising from the edges or through floor cracks in the basement slab.

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(425) 277-1990

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A common and practical approach to keeping your basement free of water is an interior basement drainage system. The Perma Dry Waterproofing basement system is specifically designed for Northwest building practices and installed to ensure that the below slab drainage cannot cause mold or air quality issues the way many other patent or quick fix solutions can.

Placed below the slab of the basement floor at the lowest possible depths, the Perma Dry Waterproofing foundation drainage system is designed to lower the water level under the slab, helping to prevent water from rising from the edges or through floor cracks in the basement slab. Installed with high quality perforated PVC pipe, sweeping corners, and system maintenance ports, we provide a Life of the Structure guarantee against failure!

  • Prevents mold and poor air quality in the home
  • Built to conform to Northwest building practices
  • Lowers the water table below the slab
  • Prevents middle of the floor leaking / moist cracks
  • Designed for any sized footing or floor thickness

Leaking basement foundation walls and rock pockets are covered with our Wall Guard system to keep your house dry and safe at a fraction of the cost of many other methods.

We have been providing “common sense” basement drainage systems since 1996 and we offer a full list of interior and exterior drainage solutions to meet your needs.

Have A Wet Basement?

We have been providing common sense basement drainage systems since 1996 and we offer a full list of interior and exterior drainage solutions to meet your needs.

Talk To Specialist

If you have water in your basement, or your planning a remodel in your basement and want to avoid future moisture issues, the first step is to give us a call and speak with a basement water intrusion specialist.

Schedule An Estimate

Schedule an inspection and estimate. After a inspecting the situation in your basement, we can offer several common sense solutions to your wet basement issues.

Schedule Your Repairs

Servicing Everett to Olympia, with some special trips to outlying areas, Perma Dry Waterproofing is a well-regarded drainage and water repair company with the demonstrated experience and knowledge to prove it.

Perma Dry Waterproofing

Serving King County

Serving Snohomish County

Serving Pierce County

Satisfaction Guaranteed!

At Perma Dry Waterproofing, we take the time to assess the problem and determine the best way to solve it. As a result, what we make dry stays dry. In fact, we’re so confident in the quality of our work that we offer a written guarantee to back it up.

We had had our basement flood twice in a couple of years. Perma Dry found a poorly sealed crack in a foundation wall and repaired it beautifully. Even with huge rainstorms, we haven't had a drop of water. Highly recommended. Macall Gordon

We've had several very wet storm seasons since the installation three years ago, and the basement has remained bone dry, even while water covers large parts of our yard. We've doubled the usable space in our house. Scott Jarol

These folks were EXCELLENT. I mean "first class". Perma Dry delivered on their promises. I've had perfect and wonderful dryness. Nope, they didn't pay me to write this. I'm just a genuinely satisfied customer. John Austin

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