Image of a construction site with the foundation of a commercial building being built
Spray Foam United States

Exterior Foundations and Under Slabs

When used as continuous insulation on the exterior of the foundation wall, closed-cell spray foam provides occupant comfort by reducing interior temperature variations and reducing the potential for condensation on surfaces in the basement. Closed-cell spray foam can also be used as a continuous insulation under the concrete slab for a variety of benefits.

Spray Foam United States
Applications
Commercial
Exterior Foundations

Spray Foam United States

Exterior Foundations

Start With A Solid Foundation

Exterior foundation insulation of commercial buildings can provide energy savings, a more uniformly conditioned space, and may also assist in providing a good base for the application of a liquid-applied waterproofing or damp-proofing material. When a spray foam and liquid-applied coating is used together, you create a seamless and fully adhered system unmatched by conventional waterproofing systems.

In addition, WALLTITE® closed-cell spray foam (SPF), when applied to exterior foundation walls and under slab, can help control moisture migration as well as entry of radon and other soil gases. Where greater compressive values are required, BASF SKYTITE® high density insulations can also be utilized under the poured concrete floor in these commercial buildings or other under slab uses.

Image of a Commercial Foundation being installed

Benefits of Insulating Foundations and Slabs with SPF

  • Closed-cell structure to help manage water vapor transmission

  • Acts as a secondary barrier against bulk water entry, preventing moisture-related problems in below-grade areas

  • Helps prevent soil gas migration through the concrete slab or foundation footings

  • Excellent adhesion ensures long-lasting performance, while its high R-value is unaffected by moisture
Construction with BASF closed-cell spray polyurethane foam applied
WALLTITE®

WALLTITE® is a high-performance, closed-cell spray polyurethane foam (SPF) insulation that creates a seamless insulating air barrier to help improve the energy efficiency, comfort, and durability of homes and buildings. Spray-applied as a liquid, WALLTITE® expands and adheres to most substrates, flowing into cracks, joints, and hard-to-reach areas to form an airtight seal. Its closed-cell structure also adds rigidity and can help reduce air leakage and moisture intrusion, supporting long-term building performance. WALLTITE® easily seals corners and transitions, as well as areas around pipes, wiring, and other openings.
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Image of a flat roof with BASF Spray Polyurethane Foam Roofing system installed
SKYTITE®
SKYTITE® high-performance roofing systems provide seamless, leak-free protection from the elements, delivering some of the highest wind uplift and hail resistance ratings in the industry. Spray-applied as a liquid, these exterior low-slope roofing systems are self-flashing and easily conform to unusual shapes and complex details, helping create a continuous, monolithic membrane. SKYTITE can be applied over many existing substrates, reducing disruption, minimizing the need for costly tear-offs, and helping cut landfill waste. The result is durable, long-lasting roof protection that supports building resilience and performance.
  1. Learn more about SKYTITE®