Why Choose BWT?

Our local Baltimore waterproofing professionals have the experience necessary to diagnose, recommend and install permanent solutions to your water problems. In our 15 years of experience, we have worked with:
  • Homeowners
  • Realtors
  • Commercial Property Management Teams

"We had met with several other contractors who gave me proposals for 2 to 3 times more than what you quoted me. You and your guys came in, did the work and were gone. I hardly knew they were there!"
-Gina R., Baltimore, MD

Read more of our testimonials to learn what other customers think of our expert services.

BWT is proud to be Going Green by recycling all of our cement debris, plastics, worn out batteries, non-functioning pumps and other various materials removed from our job sites.

Click for the BBB Business Review of this Foundation Contractors in Baltimore MD
Read Unbiased Consumer Reviews Online at AngiesList.com

Parging & Interior/Exterior Painting

Exterior Waterproofing

Exterior waterproofing prevents water from entering foundation walls therefore prevents the wicking and molding of building materials. Prior to the 1980’s, much of the original exterior waterproofing was actually damp-proofing using a degradable asphalt-based covering.

Today, polymer products will completely waterproof an exterior foundation wall. With a half life in the thousands of years, these polymers make ideal long-term exterior waterproofing solution. Asphalt and tar based compounds are affected by soil pH, and break down after 10 to 20 years, thus making that type of waterproofing ineffective over time. Our sealants have no tar or coal base in them and will not freeze or crack.


Parging is the process of applying a thin coat of a cementitious or polymeric mortar to the exterior of concrete walls to create a contiguous surface by filling surface air voids. The intent is to create a contiguous surface by filling surface air voids and bugholes and to level concrete with extreme rugosity to a level suitable for topcoating with a high-performance protective coating.

Click here to view the areas that we serve

Basement Waterproofing Services for Baltimore City, Baltimore County, Montgomery County, Prince Georges County, Harford County, Howard County, Anne Arundel, and Cecil County, Maryland, MD including: Catonsville (21228), Cockeysville (21030), Homeland (21212), Lutherville (21093), Monkton (21111), Mount Washington (21209), Owings Mills (21117), Parkton (21120), Phoenix (21131), Pikesville (21208), Randalstown (21133), Reisterstown (21136), Roland Park (21210), Ruxton (21204), Timonium (21204), Towson (21204, 21286), Upperco (21155), Woodstock (21163).