Harry Braswell, Inc. Waterproofing is Focused on Providing Smart, Economical Waterproofing Solutions for Homeowners in the Greater Washington, D.C. Metropolitan Area.


We draw on our deep understanding and experience with how the systems of a home work together to keep the home safe, dry, and operational. Our parent company, Harry Braswell, Inc., has been renovating homes in this area for nearly four decades and has addressed many waterproofing challenges during renovations. Harry Braswell has seen an increasing need for waterproofing solutions among aging homes in an area with an average rainfall of 43” a year, and at times, greater city drainage problems. We want to help.

Rather than a one size fits all approach, we evaluate your house holistically. We study your interior, exterior, and drainage systems to determine the best approach for the design and engineering of your home. Solutions might range from simple regrading of your yard to sump pump system repair or installation to more challenging foundation repairs.

No matter the size or complexity of the project, you can depend on our commitment, responsiveness, and workmanship.


Interior Waterproofing

  • French drain tile installation
  • Drainboard installation above grade, fully sealed to protect against mold growth
  • Sump pump installation
  • Sump pump replacements
  • Sump pump relocation
  • Crawlspace moisture control

Exterior Waterproofing and Water Diversion

  • Foundation wall crack repairs
  • Complete foundation waterproofing from bottom of footer to grade
  • Complete foundation waterproofing from bottom of footer to grade
    • Dry creeks
    • Underground downspouts to pop up drains
    • Drywells
    • Backyard regrading
    • Swales
  • Catch Basins
  • Trench Drains
  • Exterior Sump Pumps


Our company uses DELTA© air and moisture barriers. These barriers prevent air and moisture intrusion while being highly vapor permeable. For basements, we use DELTA©-MS-below-grade dimpled membranes, which are considered the most durable on the market. They are made from 60% recycled and 40% virgin materials.

DELTA© products are engineered to protect property, create comfort, and save energy. The company is committed to environmental sustainability. For more information about these products, click here.

DELTA© is a registered trademark of Ewald Dörken AG, Herdecke, Germany. Our orders are shipped from Canada.


“We hired Harry Braswell, Inc. to help solve a persistent basement drainage problem at our home in Alexandria. During periods of heavy rain, water would leak onto the floor at the bottom of the foundation wall, soaking the carpet in the corner of the house. The Braswell waterproofing team diagnosed the situation and came up with a practical, effective, and affordable solution. The crew was prompt and efficient, and they left our finished basement in better shape than when we started the job. We would enthusiastically recommend Harry Braswell, Inc. to anyone encountering similar residential waterproofing issues.”

Justin W. and Anne C., Alexandria, Va.