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Below Grade Insulation EPS Products

EPS Insulation Solutions for Foundation Waterproofing and Thermal Insulation Protection

Welcome to our Below Grade Insulation Solutions page, where we offer comprehensive solutions for waterproofing and thermal protection in below-grade structures. Our foam insulation products are engineered to provide effective moisture resistance, thermal insulation, and protection against soil gases for various applications in construction.

Pouring a slab? See under-slab and radiant floor insulation, and our density and compressive strength guide.

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Pole barn floor covered in PolyShield-faced EPS insulation before the slab pour

Key Features of Our Below Grade Insulation

Waterproofing

Prevent foundation water infiltration and moisture damage with our durable and water-resistant below-grade insulation.

Thermal Insulation

Maintain consistent indoor temperatures and reduce energy loss in below-grade environments, enhancing comfort and energy efficiency.

Soil Gas Protection

Mitigate the risk of soil gas intrusion, including radon, methane, and volatile organic compounds (VOCs), ensuring a safe and healthy indoor environment.

Applications for Below Grade Insulation

Foundation Wall Insulation

Ensure durable and reliable insulation for foundation walls, protecting against moisture infiltration and thermal bridging.

Underslab

Provide effective insulation and moisture protection for underslab applications, maintaining optimal conditions for flooring systems.

Cold Storage

Preserve temperature-sensitive materials and maintain cold storage conditions with high-performance below-grade insulation solutions.

Plaza Decks

Enhance waterproofing and thermal performance in plaza decks and pedestrian areas, extending the lifespan of structures and minimizing maintenance requirements.

Protect What's Below Grade From Day One

Our below grade insulation solutions guard foundations against moisture, thermal loss, and soil gases so structures stay protected for the long term.

Benefits of Below Grade Insulation

Enhanced Durability

Extend the lifespan of below-grade structures by protecting against water damage, moisture intrusion, and soil gases.

Energy Savings

Reduce heating and cooling costs for below-grade spaces while improving occupant comfort and energy efficiency.

Environmental Protection

Create a healthier indoor environment by minimizing exposure to moisture, mold, and soil contaminants, promoting occupant health and well-being.

Get in touch with us today to learn more about our below-grade insulation solutions and how they can benefit your construction project.

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Some of Our Resources

Exterior Foundation Insulation Panels

Exterior foundation insulation panels help protect below-grade structures from moisture intrusion, temperature fluctuations, and long-term energy loss. Designed for use on foundation walls and perimeter applications, these insulation systems create a continuous thermal barrier that helps reduce heat transfer while supporting waterproofing performance. Exterior foundation insulation panels are commonly used in residential, commercial, and cold-climate construction projects where maintaining energy efficiency and protecting the structure from moisture damage are critical priorities.

Orange radiant floor tubing laid over PolyShield-faced EPS insulation
Rigid Foam Foundation Insulation

Rigid foam foundation insulation provides durable thermal protection for below-grade walls, underslab applications, and other areas exposed to moisture and soil contact. EPS rigid foam insulation is valued for its moisture resistance, long-term thermal performance, and ability to help minimize thermal bridging in foundation systems. Whether used in new construction or retrofit projects, rigid foam foundation insulation can help improve indoor comfort, reduce heating and cooling costs, and extend the lifespan of foundation structures by adding an extra layer of protection against environmental conditions.

Basement Wall Condensation Solutions

Basement wall condensation solutions are essential for controlling excess moisture, preventing mold growth, and improving overall indoor air quality in below-grade spaces. Proper insulation and moisture management systems help reduce condensation caused by temperature differences between foundation walls and interior air. By combining waterproofing materials with effective thermal insulation, basement wall condensation solutions can help maintain more stable temperatures, reduce damp conditions, and create a healthier, more energy-efficient basement environment for homeowners and building occupants.

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