Great Lakes Waterproofing for Basements and Foundations

REAL WATERPROOFING!©

Serving Minneapolis, Saint Paul, the Metro Area and beyond

  • Wet Basement with beaver dam system

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    Beaver Dam System Leaking Everywhere

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  • Foundation waterproofing using bentonite

    Wet Foundation Holes and Cracks

    Foundation Cracks and Holes Allowing Water Into Bloomington Apartment Building

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  • Foundation waterproofing using bentonite

    University Using Exterior Waterproofing

    Real Waterproofing, On The Ouside!

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  • Foundation waterproofing using bentonite

    Mixing Bentonite for Real Waterproofing!

    Bentonite For Exterior Waterproofing

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  • Foundation waterproofing using bentonite

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    Saint Paul Home With Water Leaks

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  • Foundation waterproofing using bentonite

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    Drain Tile in Older Minneapolis Building

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  • Minneapolis Drain tile is leaking

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    Minneapolis New Drain Tile is Still Leaking!

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    Drain Tile Pipe Is Full Of Sand!

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  • Waterproofing paint is not working

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    Basement Waterproofing Paint Is Peeling Off

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  • Using dimple board for inside the wet basement

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    Dimple Board is Not Working on The Inside of my Basement!

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  • Drain Tile Pipes Are Plugged Up

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    Drain Tile Pipes Are Plugged Up

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  • I Have A Drain Tile But My Wall Is Still Leaking

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    I Have A Drain Tile But My Wall Is Still Leaking

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  • Bentonite, The World's #1 Waterproofing Material

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    Bentonite, The World's #1 Waterproofing Material

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  • Basement Waterproofing Sealing Cracks

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    Targeting The Wet Areas at a Fraction of The Cost of Drain Tile.

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  • Real Waterproofing on The Outside of The Foundation

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    Real Waterproofing Starts on The Outside of The Foundation

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Types Of Basement Waterproofing

Waterproofing Materials for New Construction

Some foundation waterproofing materials are better than others.  Cost is a big driver and low cost "dampproofing" asphalt and rubber coatings are found on a majority of homes and buildings.  Some have a lifespan of only a few years, we've even worked on new buildings with foundation water leaks before the inside is even done.

Insulation And Asphalt for Basement Waterproofing

Foam Board And Asphalt Spray Foundation Waterproofing

It's code now in several areas to put insulation on the exterior of the home foundation or basement before back-filling with dirt.  Dirt is the most common back-fill and it works great for drainage while still allowing some water flow.  


This Little Canada Basement is typical of what we see these days, the yellow is rigid insulation that that goes down to the footing (basement floor level) and comes up to just above the grass, that will be planted when done.  


The black asphalt or rubber coating is a type of coating we usually call "damp-proofing," meant to stop dampness but not full water saturation.  Unfortunately over a few years, it gets dry, cracks and peels off the walls.  

  1. Bentonite Foundation Exterior Waterproofing
Exterior Foundation Waterproofing using Bentonite

Bentonite Waterproofing using a flexible or semi-rigid membrane, attached to the exterior, has proven to be highly-effective for below-grade foundation and basement waterproofing.  A thin membrane with either a plastic or textile backing is attached to the exterior wall, the benonite coated side is placed against the wall.  


Bentonite will swell when in contact with water, it's all-natural base is self-healing if the building moves or shakes and if done properly should last the life of the foundation.


Bentonite is used extensively in new commercial construction including tunnels, manholes, vaults and pits.

Dampproofing Foundation Walls on New Construction

Dampproofing Foundation Wall on New Construction

After your foundation is built, but before the dirt is back-filled in, a coating is applied to the exterior walls.  While anything can be used, most homes get the local code minimum, a sprayed-on asphalt coating that only has protection against damp conditions and not water saturation.  This is by far the least expensive coating and it's lifespan is just a few short years.


The problem with asphalt-based damproofing is that if cracks or holes develop (the most common way for water to get in), damproofing will not stop it, it will also open at the crack.  It tends to get hard over time, flaking off exposed concrete, losing all protective qualities.  If you look at newer homes, sometimes you can see the black coating, and in a lot of cases, you can see the bare concrete starting to get exposed.  Just like asphalt roads made out of the same base, the material cracks and breaks apart.

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