How The Homeowner Can Help With A Wet Basement

The first question we get asked is "how can I help?" While the Great Lakes Waterproofing System works in nearly all applications, there are steps that can be taken to help insure that the basement dries up completely.  The most common problem is improper drainage away from the structure, make sure gutters are attached properly and the extensions are long enough to clear all obstructions including patios, sidewalks, trees, etc.
For a typical mid-size house 1/2" of rain on the roof will be over 150 gallons of water, some houses only have two downspouts so over 75 gallons of water could be concentrated in one area. This is why it's crucial that the water is channeled away from the structure and not left to saturate into the ground near the foundation. Our experience has shown that even placing plastic on the ground around the house does little to channel the water away if other steps are not taken first.

Another place overlooked is the window wells. The gravel should be at least 4" thick and about 8" below the bottom of the window. Over time debris builds up in the wells and if not cleaned out will provide water an easy entrance between the window frame and the wall.

Last but not least, observe the concrete and pavers around the house. Over time these will settle (usually sloping towards the house) providing a funnel of water right into the basement. Look for the tell-tale signs of dirt and sand built up on the concrete or pavers.  Proper surfaces should be slightly above the ground with a slight slope away from any structures.  Large voids will develop under concrete, asphalt or pavers, that's one of the reasons its sinking.  Exterior Basement Waterproofing will fill these voids, stabalizing the soil and prevent water from building up in these areas.

Drawing of different concrete blocks used for wall construction
By Johnny Lakes June 11, 2026
Some of the different types of blocks used in wall construction from the 1950's
Block foundation wall with crack showing how water can get into the basement
By Johnny Lakes June 11, 2026
Block foundation wall with crack showing how water can get into the basement
Pouring a concrete footing in 1940
By Johnny Lakes June 11, 2026
Historical photo showing a basement wall footing being poured with concrete in 1940
Drawing of rubble basement wall construction
By Johnny Lakes June 11, 2026
Rubble Basement Wall Construction showing how the rock is stacked to build the wall.
Dimple board basement waterproofing
By Johnny Lakes June 11, 2026
Dimple board used inside basement on walls for waterproofing
Side view of a block basement wall
By Johnny Lakes June 11, 2026
Side view of a common basement wall using blocks for construction
Finishing mortar joints between cinder blocks
By Johnny Lakes June 11, 2026
Finishing mortar joints between cinder blocks for the best waterproofing
Window well filled with melting snow
By Johnny Lakes February 26, 2026
Melting snow means wet basements in Minnesota.
Clogged yard drain
March 24, 2025
Yard drainage pipe is filled with dirt, rain water is collecting near the home leaving this customer with a wet basement.
Foundation leaking water
By GLWP September 1, 2022
I Have Drain-Tile But I Still Have A Wet Basement!

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