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Protect Your Home’s Foundation with Exterior Waterproofing

A home’s foundation is its structural base, supporting the weight of the entire building. It’s essential to keep the foundation in good condition to maintain the integrity of the house. One common issue that many homeowners face is water damage to the foundation. Water can seep into the foundation and cause cracks, which can lead to more significant problems such as structural damage, mold growth, and even flooding. Exterior waterproofing is a method of preventing water damage to the foundation and protecting your home.

What is Exterior Waterproofing?

Exterior waterproofing is a process of sealing the foundation from the outside to prevent water from seeping into the basement or crawl space. The process involves excavating the soil around the foundation and applying a waterproof coating or membrane to the exterior walls of the foundation. This process creates a barrier that prevents water from penetrating the foundation walls.

Why is Exterior Waterproofing Important?

Exterior waterproofing is essential to protect your home’s foundation from water damage. Water can cause significant damage to a foundation over time, leading to expensive repairs. Waterproofing the exterior foundation walls can prevent water from penetrating the walls, reducing the risk of cracks and other damage.

Additionally, exterior waterproofing can prevent moisture from entering the basement or crawl space, reducing the risk of mold growth and other health hazards. By preventing water from entering your home, you can maintain a healthier living environment for you and your family.

How is Exterior Waterproofing Done?

Exterior waterproofing is a complex process that requires expertise and specialized equipment. Here are the general steps involved in exterior waterproofing:

  1. Excavation: The first step is to excavate the soil around the foundation. This allows access to the exterior walls of the foundation.
  2. Surface Preparation: The surface of the foundation walls must be cleaned and prepared for waterproofing. This may involve pressure washing, sandblasting, or other methods of surface preparation.
  3. Application of Waterproofing Membrane: The next step is to apply a waterproofing membrane to the exterior walls of the foundation. The membrane is typically made of rubberized asphalt or other durable material that can withstand the elements.
  4. Installation of Drainage System: A drainage system is installed to direct water away from the foundation. This may include the installation of a French drain, a sump pump, or another drainage system.
  5. Backfill: The soil is then backfilled around the foundation, and the site is restored to its original condition.

The cost of exterior waterproofing varies depending on the size and complexity of the job. It’s essential to get a quote from a qualified contractor to understand the cost involved.


Exterior waterproofing is an essential investment for homeowners who want to protect their home’s foundation from water damage. By creating a barrier around the foundation walls, exterior waterproofing can prevent water from entering the basement or crawl space and reduce the risk of structural damage and other issues. If you’re concerned about water damage to your home’s foundation, consider contacting a qualified contractor to discuss your options for exterior waterproofing.

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