• Concrete wall forming systems that are used to construct a basement wall will either have a conventional hollow hole left from the forms, or a flat metal bar called a Snap Tie.
  • Snap Ties are metal bars that are broken off flush and left inside the wall.
  • When Snap Ties leak, Mr. Sponge Waterproofing, Inc. can repair from the interior by pin-point injecting our water-activated SP-3 polyurethane to fully stop the leak.



Mr. Sponge Waterproofing, Inc. specializes in stopping water from entering through poured cement foundation walls. Our specialty is repairing wall cracks, tie rods, honeycombs, and I-Beam leaks. We instantly stop water entry in these most common basement leak sources by injecting our proprietary SP-3 Water Activated polyurethane, under high pressure, into the path of water entering your basement.

Mr. Sponge Waterproofing 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 polyurethane was developed in 1995 and brings a high performance in water-activated sealing solutions for our customers. Tested and applied for over 20 years, both private and commercial 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 Waterproofing 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 leaks on their own time. Currently sold in 35 states, the TRX ® 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 Waterproofing. We look forward to helping solve your basement leak problems.