What Is Foundation Coating?
A foundation coating is a waterproof sealant applied to the exterior walls of a foundation to protect against water and moisture infiltration. Typically, this protective layer prevents water from seeping through and compromising the structural integrity of the foundation. Its application is an essential part of constructing a waterproof and moisture-resistant base for any building.
Key features include:
- Moisture Defense: It serves as a primary defense against subsurface water, preserving the foundation from potential water damage.
- Variety in Composition: Available in different formulations such as liquid tar, rubberized asphalt, or polymer-based products to suit various environmental conditions and foundation materials.
- Added Insulation: Certain types of coatings offer thermal insulation, contributing to a building’s overall energy efficiency.
- Flexible Application: Can be tailored for both new construction and existing homes needing waterproofing upgrades.
What Is The Cost Of Foundation Coating?
The cost of foundation coating typically ranges from $3 to $6 per square foot. For an average-sized home, this might total around $1,500 to $3,000. However, costs can rise significantly — to $5,000 or more—for premium options or if extensive repairs are needed. It’s wise to get recent local quotes for the most accurate pricing.
- Asphalt-Based Coatings: These are a traditional choice, offering reliable waterproofing at an economical cost. They are easy to apply but may become brittle over time.
- Cementitious Coatings: Made with cement, these coatings provide a rigid, durable barrier and are well-suited for masonry or concrete surfaces.
- Rubberized Asphalt: This more flexible option adheres well to a variety of surfaces, accommodating slight foundation movements without cracking.
- Polymer-Modified Coatings: These high-performance coatings offer superior elasticity and adherence, making them effective even in challenging climates.
- Bentonite Clay: A natural, environmentally friendly option, bentonite expands upon contact with water, forming a thick, impermeable barrier that self-heals if punctured.
- Acrylic Coatings: These water-based coatings are less toxic and have low VOC emissions, making them a safer choice for applicators and the environment.