About Insulfoam

Engineered EPS Solutions for Performance, Efficiency, and Scale

Insulfoam, a division of Carlisle Weatherproofing Technologies and part of Carlisle Companies, is a leading manufacturer of block-molded EPS (expanded polystyrene) and GPS (graphite polystyrene), in North America. Trusted among building contractors, civil engineers, specifiers and architects, Insulfoam delivers insulation solutions with long-term thermal performance, backed by expert design and technical services, vertical integration, and a robust national footprint.

A Complete Portfolio of EPS Solutions

Insulfoam offers a comprehensive range of insulation products designed to perform across the entire building envelope (roof, wall, below grade) as well as civil infrastructure and geotechnical applications.

Key solutions include:

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Proven Performance and Innovation Equals Long-Term Value

Insulfoam EPS insulation is engineered to meet today’s complex building demands by balancing long-term thermal performance, moisture control, and cost efficiency.

Key Features

  • Highest R-value per dollar
  • Stable R-value with no thermal drift, ensuring long-term insulation value
  • Lightweight and easy to install, reducing labor time and costs
  • Moisture-resistant with high drying potential
  • Dimensional stability and compressive strength
  • 20-year Thermal performance warranty

A vertically integrated manufacturer, Insulfoam produces EPS from raw resin beads, ensuring consistent quality and performance across every product. We offer both unfaced and laminated solutions in a wide range of compressive strengths, sizes, and custom geometries up to 40 inches thick.

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Nationwide Support. Local Expertise.

Insulfoam has a robust national manufacturing footprint with 12 locations nationwide. Carlisle Companies acquired Polar Industries (Northeast) and Plasti-Fab in 2024, and ThermaFoam (South Central) in 2025 - expanding Insulfoam’s ability to deliver high quality EPS solutions from coast to coast.

Partnering with You from Design Through Installation

At Insulfoam, we combine material science, manufacturing scale, and field expertise to deliver insulation solutions that perform on the jobsite and long-term. Our commitment to innovation is driven by advanced R&D, rigorous testing, industry certifications, and code compliance. Our goal is simple: to help you build more efficiently, reduce costs, and deliver long-lasting thermal performance.

We partner with architects, builders, and contractors at every stage, delivering:

  • Design expertise and technical support
  • Specification support and system recommendations
  • Job-site coordination and installation guidance
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