Serving Kansas and Missouri

Exterior Basement Waterproofing

Exterior basement waterproofing stops moisture in its tracks before entering your basement. Unlike interior waterproofing, which directs water out and away from the foundation after it’s already entered your home, exterior basement waterproofing prevents water intrusion into the foundation at all. This reduces reliance on internal drainage solutions—such as perimeter drains—and creates a watertight basement from the outside in.

Ready to seal off a leaky basement and restore your peace of mind for years to come? Call Foundation 1 to learn more about our exterior basement waterproofing solutions and schedule your free inspection!

Waterproofing Your Basement Walls from the Outside

At Foundation 1, our expert waterproofing contractors have helped Kansas City homeowners keep their basements dry since 2001. In the nearly 20 years our company has been in operation, we’ve serviced thousands of satisfied customers with proven waterproofing methods. Our process has evolved and perfected over the years, ensuring you’re getting the best, most reliable waterproofing system available to the Kansas City area.

How to Waterproof Your Basement from the Exterior

Our exterior waterproofing method involves a five step process:

  1. External Excavation to Footing. A trench is dug to the footing of your foundation. Once this is completed, the exterior foundation wall is cleaned to reveal any cracks that could be letting in water.
  2. External Crack Repairs and Waterproof Membrane. We fill any external cracks or defects in the concrete, then apply a waterproof membrane.
  3. Footing Drain Tile to Sump Pump. Typically, we run a new footing drain tile (pipe) to the sump pump. A new sump pump is often indicated, as the load reduction system relies on water which reaches the footing to be pumped away from the foundation by a sump pump. Having a strong functioning sump pump is a critical aspect of the system. There are some instances where we may be able to run the drain to daylight or use an existing sump pump, however, this will be assessed by your evaluator prior to developing the repair plan.
  4. Gravel Backfill and Load Reduction. To complete the project, we backfill a portion of the trench with gravel. Because gravel does not have the expansive characteristics of dirt and clay, this reduces the amount of pressure directly on the wall, which often addresses some of the key underlying problems.
  5. Replace Dirt and Ensure Proper Grading. Finally, we replace dirt and ensure there is sufficient negative grade away from the foundation.

Advantages of Exterior Foundation Waterproofing

  • No disturbance to the interior of your basement, making exterior waterproofing advantageous for those with finished basements
  • Involves waterproofing your foundation from the exterior with wall crack repair and a waterproof membrane
  • Provides an opportunity for foundation wall straightening and wall bracing, repairing foundations that have caved inwards due to hydrostatic pressure or poor water management
  • Reduces or eliminates reliance on interior waterproofing systems
  • Installation time is longer and can cost more, yet it is the only way to ensure a completely watertight foundation and basement
  • Products used for exterior waterproofing are serviceable

Services Often Done Alongside Exterior Basement Waterproofing

Very often we will include some additional products and services in conjunction with the load reduction project, including the following:

  • Internal Crack Repair: Internal crack repair is often indicated to seal up the cracks on the inside foundation. Visit our web page on these services to see the different options we have available to help seal internal foundation wall cracks.
  • Wall Straightening: When we have the wall excavated, we are able to perform a “wall push” which will take a wall which has bowed, or leaned in, and return it to a plumb position. This, obviously, returns a significant amount of the structural integrity to the wall. Your evaluator will measure to see how much the wall is leaning in and, based on this, be able to indicate if the wall straightening (push) procedure is necessary.
  • Wall Bracing: Wall bracing can also be a part of the process as well. If the wall has experienced significant movement, it often makes sense to reinforce with wall beams and/or other bracing mechanisms. The goal here is to make sure that your foundation wall stays straight in the future and is protected against the inward pressures, bowing, and leaning in the future.

Again, your evaluator will assess which of these add on products and services will be of benefit.

Call Foundation 1 for Exterior Basement Waterproofing in Kansas City

Protect your home from water damage with exterior basement waterproofing from Foundation 1. Call today to schedule your free evaluation!

  • What Our Clients Say

    Worked a near miracle at my house. They knew what they were doing and did it well.

    -- Linda, Lee’s Summit
  • What Our Clients Say

    Courteous, responsive, adaptable, respectful, honest, professional, friendly, clean, quality work. Should I go on? I am a believer in balanced reviews, but there's just nothing shy of exceptional to say about this company.

    -Brian, Lenexa
  • What Our Clients Say

    Great company, great people! Go above and beyond.

    -– Donna, Kansas City