What Insulfoam LLC does

Insulfoam LLC manufactures expanded polystyrene (EPS) and graphite polystyrene (GPS) rigid foam insulation, operating as a division of Carlisle Weatherproofing Technologies within Carlisle Companies Incorporated (NYSE: CSL). Founded circa 1959-1960 and headquartered in Puyallup, Washington, the company produces insulation products for commercial, residential, infrastructure, and OEM applications, with the legal entity disclosed as Carlisle EPS Holding, LLC. Insulfoam operates 12 manufacturing plants across the United States and supplies roofing, wall, below-grade, geofoam, and specialty components to commercial contractors, architects, engineers, building owners, state departments of transportation, OEM manufacturers, and DIY consumers via Home Depot, Lowe's, and Menards.

The company's core technology is vertically integrated EPS manufacturing from raw resin beads, producing rigid foam that is 98% air. The product portfolio spans standard unfaced EPS meeting ASTM C578, R-Tech branded panels and fanfold with polymeric laminated facers, R-Tech Platinum GPS achieving R-5 per inch through graphite-particle integration, tapered EPS factory-cut up to 40 inches thick for roof drainage, and ASTM D6817-compliant geofoam blocks weighing 1-3 lb/ft³ for geotechnical and structural fill applications. Notable proprietary features include a 100%/20-year thermal performance warranty (versus declining warranties on XPS and polyiso), a 15-year field study documenting 4.8% retained moisture versus 18.9% for XPS, and OEM capabilities for custom architectural shapes and packaging cores.

Insulfoam's business model is product-sales-driven across four streams — commercial EPS insulation, geofoam structural fill, DIY consumer kits, and OEM/specialty components — all structured as one-time transactions rather than subscriptions. Go-to-market is hybrid: a direct commercial sales representative network serves B2B specifiers and contractors, while consumer DIY products flow through tier-1 retail channels. Strategic momentum is acquisition-led under the Carlisle umbrella, with Polar Industries and Plasti-Fab acquired in 2024 and ThermaFoam in 2025, extending the manufacturing footprint from coast to coast.

Name

Insulfoam LLC

Legal name

Carlisle EPS Holding, LLC

Website

https://insulfoam.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Insulfoam LLC manufactures EPS and GPS rigid foam insulation for roofing, walls, foundations, geofoam infrastructure, and OEM components, serving contractors, DOTs, building owners, and DIY consumers through 12 U.S. plants as a division of Carlisle Companies.

Ownership category

akta.pro rank

Product category

Rigid Foam Building Insulation

NAICS

Polystyrene Foam Product Manufacturing (32614), Polystyrene Foam Product Manufacturing (326140)

SIC

Plastics Foam Products (3086)

akta.pro primary industry

Expanded Polystyrene (EPS) Foam Manufacturing (IMANAIAA)

akta.pro secondary industries

Foam Plastic Insulation (EPS/XPS/PIR/PUR) (IMADAGAD), Foam Conversion & Fabrication (Cutting, Laminating, CNC, Packaging Inserts) (IMANAIAJ)

Keywords

• Rigid foam insulation
• Expanded polystyrene products
• Graphite polystyrene insulation
• EPS geofoam fill
• Building envelope insulation

Headquarters

HQ city

Puyallup

HQ country

United States

HQ region

North America

Offices13 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. EPS Insulation Products: Sale of expanded polystyrene rigid foam insulation products for commercial and residential construction applications including roof, wall, below-grade, and specialty insulation.
2. Geofoam Products: Structural and geotechnical fill products sold to infrastructure projects including government DOT projects, commercial construction, and civil engineering applications.
3. DIY Consumer Products: Pre-packaged insulation kits sold through retail channels (Home Depot, Lowe's, Menards) targeting individual homeowners for garage, attic, and basement insulation projects.
4. OEM & Specialty Components: Custom EPS shapes, cores, and packaging solutions sold to OEM manufacturers and specialty building component producers.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Insulfoam LLC manufactures and sells Expanded Polystyrene (EPS) and Graphite Polystyrene (GPS) rigid foam insulation for roof, wall, below-grade, geofoam, and OEM/specialty applications, plus pre-packaged DIY insulation kits sold through retail. The company is vertically integrated, producing EPS from raw resin beads via a block-molding process, and sells primarily through commercial sales representatives and big-box retailers such as Home Depot, Lowe's, and Menards.

Product overview

Insulfoam LLC is a manufacturer of expanded polystyrene (EPS) and graphite polystyrene (GPS) insulation products for the building and construction industry. The product portfolio is organized across five main categories: Roof EPS (including Insulfoam EPS, R-Tech Panels, R-Tech Fanfold, Flute Fill, Tapered EPS, Holey Board, HD, SP, InsulLam, and WeatherAll), Wall EPS (including R-Tech CW, T&G Substrate, Exterior Grade/EIFS, Platinum GPS, and Siding Profile), Below-Grade EPS (including Drainage Board and various faced/unfaced options), Geofoam (structural fill blocks and Gripper Plates), and OEM & Specialty products (DIY kits, EPS Cores, and EPS Shapes). Products span from standard unfaced EPS insulation to advanced R-Tech branded products with polymeric laminated facers and Platinum GPS with graphite-enhanced R-values. The company operates 12 manufacturing facilities nationwide and offers both commercial and residential/institutional products, with a focus on long-term thermal performance backed by a 100%, 20-year warranty.

Differentiator

Problem solved

Functional benefit

Brands

• R-Tech: Engineered rigid insulation consisting of superior closed-cell, lightweight and resilient EPS with advanced polymeric laminate facers
• R-Tech Platinum GPS
• InsulLam
• WeatherAll
• Insulfoam GF (Geofoam)

Products and services

• Insulfoam EPS (Unfaced) Standard unfaced EPS rigid foam insulation meeting ASTM C578 specifications, used for commercial and residential roof, wall, and below-grade insulation applications.
• Insulfoam Platinum GPS Graphite Polystyrene insulation with up to 20% higher R-value per inch than standard EPS, for roof, wall, and below-grade applications requiring premium long-term thermal performance.
• R-Tech Panels (Faced/Laminated EPS) EPS panels with advanced polymeric laminate facers for commercial roofing applications; provide durability, moisture protection, and engineered rigid insulation.
• R-Tech Fanfold Panels EPS with polymeric laminated facers in accordion-style fanfold bundles for roof recover applications; each bundle covers up to 200 square feet with 25 panels (2' x 4').
• R-Tech Platinum GPS Panels Premium graphite polystyrene insulation with two-sided factory-laminated metalized polymeric facers, achieving R5 per nominal 1 inch with 20% higher R-value per inch than standard EPS, for wall and roof assemblies.
• R-Tech CW (Cavity Wall) Insulation EPS with polymeric laminated facers designed for commercial cavity wall applications; provides moisture resistance and long-term thermal performance in commercial wall assemblies.
• Insulfoam FL (Flute Fill) EPS factory-cut profiles designed to match virtually any metal roof flange profile for seamless installation in metal flute-fill roofing applications.
• Insulfoam EPS Tapered Factory-cut custom tapered EPS for roof drainage; available in large blocks up to 40 inches thick with custom slopes to meet exact dimensional requirements.
• Insulfoam HB (Holey Board) EPS with factory-cut holes designed to reduce weight in concrete roof systems while delivering insulation value for lightweight concrete roof applications.
• Insulfoam HD (High Density Board) EPS with polyisocyanurate cover board delivering enhanced compressive strength for commercial roofing applications requiring higher load-bearing insulation.
• Insulfoam SP (Secure Ply) Panels EPS with fiberglass facer for direct-to-deck metal roof applications; meets IBC Chapter 26 requirements and passes UL 1256 without a thermal barrier.
• InsulLam Nailbase EPS with OSB or plywood cover board that provides structural support for mechanically attached membrane systems in commercial roofing.
• WeatherAll Panels and Fanfold EPS with polymeric laminated facers for wall insulation, available in panel and fanfold formats for various commercial and residential wall applications.
• Insulfoam EG (Exterior Grade Board) EPS designed for EIFS (Exterior Insulation Finishing System) wall assemblies, providing stable R-value and dimensional stability for exterior finish systems.
• Insulfoam T&G (Tongue & Groove) Substrate EPS insulation substrate with tongue-and-groove edges for secure interlocking installation under stucco wall finishes on exterior wall assemblies.
• Insulfoam EPS Siding Profile EPS factory-cut profiles for siding underlayment that deliver thermal insulation and a solid, level base for new siding installation.
• Insulfoam DB (Drainage Board) EPS with drainage channels for exterior foundation applications that insulates the foundation wall while channeling water away from the structure.
• Insulfoam GF (Geofoam) Structural Fill Lightweight EPS rigid foam blocks engineered as structural and geotechnical fill meeting ASTM D6817 specifications; used for highway embankments, bridge approaches, soft-soil remediation, slope stabilization, and structural void fill in infrastructure projects.
• DIY Multi-Purpose EPS Insulation Kit Pre-configured EPS insulation kit for homeowners sold through retail channels (Home Depot, Lowe's, Menards); reduces heating and cooling costs in residential applications.
• Garage Door EPS Insulation Kit Pre-configured EPS insulation kit for garage doors (achieving R-5.2 at 40°F per panel), sold through retail channels and addressing the largest uninsulated surface in most homes.
• Insulfoam EPS Cores (OEM) EPS engineered for OEM applications including cold storage, structural insulated panels (SIPS), flotation systems, RVs, spa covers, and stadium seating; available in various sizes, shapes, and densities.
• Insulfoam EPS Shapes (Architectural) Factory-cut EPS profiles that replicate stone, wood, and concrete architectural shapes at 30-40% lower cost with lightweight construction and easy installation for architectural and OEM applications.

Quantifiable outcome

• 25-50% cost reduction compared to other rigid foam insulations
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Carlisle CompaniescoreOthersInsulfoam is a division of Carlisle Weatherproofing Technologies and part of Carlisle Companies Incorporated. Carlisle acquired Polar Industries (Northeast) and Plasti-Fab in 2024, and ThermaFoam (South Central) in 2025, expanding Insulfoam's manufacturing footprint nationwide.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• ACH Foam Technologies: ACH Foam Technologies is one of the largest U.S. manufacturers of EPS foam products for packaging, insulation, and architectural applications, competing head-to-head with Insulfoam across roof, wall, below-grade, geofoam, and OEM/SIPS/core channels.
• Atlas Roofing Corporation (ACFoam): Atlas Roofing produces ACFoam-brand EPS and polyiso roof insulation, directly competing with Insulfoam in commercial roofing specifications and offering similar ASTM C578-compliant rigid foam boards.
• Benchmark Foam / Foam-Control: Benchmark Foam manufactures Foam-Control-brand EPS insulation and ACFoam-style board products for roof, wall, below-grade, and geofoam applications, making it a direct EPS-specific competitor to Insulfoam.
• Polar Industries: Northeast U.S. EPS insulation and packaging manufacturer acquired by Carlisle/Insulfoam in 2024; previously a direct regional competitor and now an integrated part of the Insulfoam platform.
• Plasti-Fab: Plasti-Fab manufactures EPS insulation for wall, roof, and below-grade applications in Canada and the U.S.; acquired by Carlisle in 2024 to expand Insulfoam's Northeast/Midwest footprint.
• ThermaFoam: South Central U.S. EPS insulation manufacturer acquired by Carlisle in 2025; previously a regional competitor in geofoam and rigid foam board.

Broad incumbents

• Owens Corning (FOAMULAR): Owens Corning produces FOAMULAR XPS rigid foam insulation and offers a broad roofing systems portfolio, competing with Insulfoam primarily in commercial roof insulation specifications.
• Dow (STYROFOAM / XENERGY): Dow manufactures STYROFOAM-brand extruded polystyrene (XPS) insulation and other building envelope products, providing chemically differentiated competition to EPS across commercial roofing and below-grade.
• Kingspan Group: Kingspan is a global building envelope leader offering rigid insulation boards, structural insulated panels, and integrated wall/roof systems — competing with Insulfoam's EPS, GPS, and SIPS-core products.
• BASF (Neopor / Styrodur): BASF supplies Neopor graphite polystyrene (GPS) resin and Styrodur XPS, providing the differentiated raw-material inputs that compete with and feed into the rigid-foam insulation category in which Insulfoam operates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/insulfoameps
• Facebookfacebook.com/insulfoam
• LinkedInlinkedin.com/company/insulfoam
• Xx.com/insulfoam

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Insulfoam LLC