Failed Exterior Waterproofing


Failed Outside waterproofing

Consider inside Injection of wall crack leaks instead of outside sealing techniques.

12/03/12 – A recent wall excavation revealed how an outside waterproofing effort was made by applying sealants on the outside which shows why some outside efforts fail. A minimal effort was made to apply the sealants and did not consider sealing the crack through the depth of the wall.


If you have water entering your basement through your poured cement foundation walls, Mr. Sponge Waterproofing Incorporated specializes in repairing wall cracks, tie rods, honeycombs, and I-Beam leaks. Injecting our proprietary SP-3 Water Activated urethane under high pressure into your wall, we instantly stop water entry in these most common basement leak sources.

Mr. Sponge is owner-operated; this means you get the owner on every job. We are not a franchise operation, but rather a Michigan-based corporation that brings solutions to homeowners from a local source.

Our proprietary blend of SP-3 urethane was developed in 1996. It brings a high performance in water-activated sealing solutions for our clients. Tested and applied for over 20 years, both commercial and residential clients have seen their basement leaks disappear. On the commercial side of our business, we have clients with over 20 years of history with Mr. Sponge who continue to use our sealing techniques and services today for their numerous properties.

On the national level, we have developed the first and only tie rod leak repair device, which allows homeowners to fix their leaking tie rod holes on their own time. Currently sold in 35 states, the TRX Compressed Swell Plug has continued to grow on a national scale.

If you are looking for a specialized owner-operated company to fix your leaks, you have found your solution in Mr. Sponge. We look forward to helping solve your basement leak problems.

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