Durable, Moisture-Resistant Foundation Insulation

EPS Foundation Insulation delivers long-term thermal efficiency for interior and exterior applications. Resistant to moisture, fungus, and decay, it ensures reliable performance and energy savings. Versatile for perimeter walls, slabs, or masonry cores, EPS offers consistent R-values and design flexibility.
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EPS Data Sheet
insulataion

Expanded Polystyrene (EPS)
Foundation Perimeter Insulation

Geofoam America manufactures a full line of EPS foundation insulation products designed for residential, commercial, and industrial applications. Lightweight yet durable, EPS panels resist deterioration and maintain stable thermal performance even in contact with soil and moisture. For masonry foundations, EPS loose fill can be added to block cores for enhanced R-values, further improving energy efficiency and indoor comfort.

Masonry Construction

Enhances block wall applications when EPS loose fill is placed in masonry cores for increased R-values.

Industrial Facilities

Provides stable, moisture-resistant insulation for warehouses and large-scale structures with significant foundation exposure.

Residential Foundations

Improves comfort and energy efficiency in homes by reducing heat loss through basement and crawlspace walls.

Commercial Buildings

Delivers dependable thermal performance for office buildings, schools, and retail structures with exposed foundations.

Perimeter Insulation

Simplifies installation with pre-numbered panels, reducing labor costs and installation time.

Need Lightweight, Strong, and Reliable Geofoam?

Let’s discuss how Geofoam America can help lower costs, speed up construction, and meet your project’s requirements.

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Industries Served

Geofoam is used across a wide range of construction applications:

Road & Bridge Construction

Stadium & Theater Seating

Airports & Railways

Retaining Structures

Green Roofs

Custom Projects

Looking for a foundation insulation system that performs in all conditions?

EPS foundation insulation offers a cost-effective solution that meets or exceeds modern energy codes. With its high resistance to moisture, fungus, and decay, EPS ensures reliable long-term performance in diverse soil and climate conditions. Custom sizes and configurations allow for easy installation in both new construction and retrofit projects.

EPS Foundation Insulation is expanded polystyrene foam designed to insulate foundation walls, slabs, and masonry cores. It provides dependable long-term thermal performance while resisting moisture, fungus, and decay.

Yes. EPS is specifically engineered for below-grade use. It maintains its R-value and integrity even when exposed to soil and ground moisture.

 

Absolutely. EPS is closed-cell and highly resistant to water absorption, fungus, and decay. This makes it ideal for foundation applications where damp conditions are common.

EPS is more cost-effective than many alternatives, while still delivering consistent thermal resistance and durability. Unlike some materials, EPS won’t degrade over time and offers excellent R-value per dollar.

Yes. EPS loose fill can be placed inside masonry block cores to boost R-values and improve the thermal performance of block wall foundations.

Yes. EPS insulation meets or exceeds ASTM standards and complies with modern energy codes, making it approved for both residential and commercial use.

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Benefits of EPS Foundation Perimeter Insulation

  • Moisture Resistant – Retains thermal performance even in damp conditions.

  • Durable & Long-Lasting – Withstands soil contact without deterioration.

  • Energy Efficient – Reduces heat loss through foundation walls, lowering energy bills.

  • Versatile Applications – Effective in interior, exterior, and masonry block construction.

  • Cost-Effective – Offers excellent R-value per dollar compared to alternative insulation materials.

  • Environmentally Friendly – Manufactured from recyclable EPS, free of CFCs and HCFCs.

  • Code Compliant – Meets ASTM standards and energy code requirements for foundations.