Seal Foundation Walls Before Water Gets In

Exterior waterproof coatings in Norristown create a protective barrier against moisture intrusion and foundation deterioration.

Your foundation walls in Norristown are constantly exposed to soil moisture, rain runoff, and groundwater pressure that can push through porous concrete or aging masonry. You might notice damp spots inside your basement that appear after heavy rain, efflorescence forming on the walls, or cracks that seem to grow wider over time. Tru Basement Waterproofing, Inc. applies exterior waterproof coatings to foundation walls that are accessible from the outside, creating a membrane that stops water before it reaches the concrete. Norristown homes built on older foundations or those with exposed basement walls benefit from this preventative measure, especially when paired with drainage improvements and masonry repairs.

An exterior waterproof coating is a thick, rubberized membrane applied directly to the foundation wall after the soil is excavated and the surface is cleaned. The coating bonds to the concrete and forms a continuous barrier that prevents water from soaking into the porous material. This work is often done during new construction or when foundation walls are already exposed for repairs, because excavation is required to access the exterior surface.

If your foundation walls in Norristown show signs of moisture intrusion or you want to prevent future water damage, contact us to discuss exterior waterproof coatings and related drainage work.

How the coating is applied and what it protects

Application begins with excavating soil around the foundation to expose the exterior walls, then cleaning the surface to remove dirt, old coatings, and loose material. In Norristown, this often includes repairing cracks or damaged mortar joints before the coating is applied. The waterproof membrane is rolled or sprayed onto the wall in thick layers, creating a seamless barrier from the footing to just above grade level.

After the coating cures and the soil is backfilled, water no longer soaks into your foundation walls when it rains or when the water table rises. Damp spots inside your basement disappear, and the concrete stays dry and protected from freeze-thaw damage that can cause cracking over time. Your foundation lasts longer, and you avoid the cost of interior repairs caused by untreated moisture intrusion.

This work is most effective when combined with proper grading, downspout extensions, and perimeter drainage that move water away from the foundation at the surface level. Exterior coatings do not address water that enters through the floor or from interior sources like condensation. If your foundation walls are not accessible due to driveways, porches, or neighboring structures, interior waterproofing methods may be a better option.

Here is what homeowners typically want to understand

Homeowners in Norristown often ask about cost, timing, and whether exterior coatings are necessary, so here are answers to the most common questions that come up before this type of work begins.

When is exterior waterproof coating the right choice?
It is the right choice when your foundation walls are accessible and moisture is entering through the concrete itself rather than through cracks in the floor or poor drainage. It works best as a preventative measure or during foundation repairs.
How long does an exterior waterproof coating last?
Most coatings last 10 to 15 years or longer depending on soil conditions, drainage, and how well the surface was prepared before application. Proper backfilling and drainage help extend the lifespan.
What happens if my foundation walls are not accessible?
If walls are blocked by driveways, porches, or other structures, interior waterproofing methods like drainage systems and sealants may be used instead. An assessment in Norristown will determine the best approach.
Why does excavation cost so much for this type of work?
Excavation requires heavy equipment, labor, and careful handling of utilities and landscaping. The cost reflects the work needed to expose the foundation, apply the coating, and restore the site afterward.
What other work should be done at the same time?
Crack repairs, mortar repointing, and drainage improvements are often completed while the foundation is exposed. This maximizes the value of excavation and ensures long-term protection.

Tru Basement Waterproofing, Inc. applies exterior waterproof coatings throughout Norristown and nearby communities, helping homeowners protect their foundations before water damage occurs. Get in touch to schedule an assessment and discuss your options.