The Global Polyisocyanurate Boardstock Foam Market is projected to grow significantly from its 2025 valuation, reaching a substantial market size by 2034, propelled by a healthy Compound Annual Growth Rate (CAGR). This robust growth is primarily fuelled by stringent global building energy codes, increasing demand for energy-efficient construction materials, and the rising focus on sustainable building envelopes across commercial and residential sectors.

As the construction industry accelerates its transition towards net-zero carbon buildings and enhanced thermal performance, the focus sharpens on the key material manufacturers innovating in high-performance insulation. In this blog, we profile the Top 10 Companies in the Polyisocyanurate Boardstock Foam Industry—a group of chemical giants, specialized manufacturers, and sustainability leaders shaping the future of building insulation.

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🔟 1. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Styrodur® PIR rigid foam boards

BASF is a global leader in chemistry and a major supplier of high-performance insulation materials. Its Styrodur® brand of PIR boardstock foam is renowned for its exceptionally low thermal conductivity, high compressive strength, and moisture resistance, making it a preferred choice for inverted roofs, walls, and floor insulation in demanding applications.

Sustainability Initiatives:

• Development of foam formulations using alternative blowing agents with low Global Warming Potential (GWP)

• Commitment to carbon-neutral growth ambitions by 2030

• Products contribute to green building certifications like LEED and BREEAM

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9️⃣ 2. Kingspan Group

Headquarters: Kingscourt, Ireland
Key Offering: Kooltherm® PIR phenolic boards, insulated panels

Kingspan is a specialist in high-performance insulation and building envelope solutions. Its Kooltherm range includes PIR-based boards that offer some of the lowest thermal conductivities on the market. The company is a dominant force in the global insulated panel market, supplying PIR cores for walls and roofs.

Sustainability Initiatives:

• Planet Passionate sustainability program targeting net-zero carbon manufacturing

• Investment in circular economy models, including product take-back schemes

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8️⃣ 3. Dow Chemical Company

Headquarters: Midland, Michigan, USA
Key Offering: Styrofoam™ and other PIR foam insulation products

Dow is a leading materials science company with a strong portfolio of insulation solutions. While historically known for extruded polystyrene (XPS), Dow provides chemistry and technology for high-performing PIR foams, focusing on solutions that enhance energy efficiency and reduce the carbon footprint of buildings over their lifecycle.

Sustainability Initiatives:

• Commitment to incorporating circular and renewable feedstocks into its product lines

• Goals to reduce GHG emissions and advance a low-carbon economy

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Polyisocyanurate Boardstock Foam Market – View in Detailed Research Report

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7️⃣ 4. Honeywell International Inc.

Headquarters: Charlotte, North Carolina, USA
Key Offering: Solstice® blowing agents for PIR foam

Honeywell plays a critical role in the PIR foam ecosystem as a leading supplier of blowing agents. Its Solstice® line of low-GWP hydrofluoroolefin (HFO) blowing agents enables the production of PIR foam with superior insulating properties and a significantly reduced environmental impact, helping manufacturers meet regulatory demands.

Sustainability Initiatives:

• Pioneering next-generation blowing agents with near-zero GWP

• Supporting the industry’s transition away from high-GWP HFCs

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6️⃣ 5. Johns Manville

Headquarters: Denver, Colorado, USA
Key Offering: JM Tuff-R® PIR insulation boards

A Berkshire Hathaway company, Johns Manville is a leading manufacturer of insulation, roofing, and engineered products. Its JM Tuff-R® is a fiberglass-faced PIR roof insulation board known for its high R-value per inch, providing excellent thermal efficiency for commercial roofing applications.

Sustainability Initiatives:

• Focus on sustainable manufacturing processes and resource efficiency

• Product innovation aimed at improving building energy performance

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5️⃣ 6. SOPREMA Group

Headquarters: Strasbourg, France
Key Offering: XpressDek PIR boards, roofing systems

SOPREMA is a global manufacturer of waterproofing and insulation products. The company produces PIR insulation boards integrated into its full roofing systems. Its focus on compatibility and performance ensures durable and energy-efficient building envelopes for flat and low-slope roofs.

Sustainability Initiatives:

• Development of eco-friendly product lines and recycling initiatives

• Commitment to reducing the environmental impact of its operations and products

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4️⃣ 7. Armacell International S.A.

Headquarters: Luxembourg, Luxembourg
Key Offering: ArmaGel® PIR and other insulation materials

Armacell is a world leader in flexible foams for equipment insulation and also manufactures engineered foams. The company produces advanced PIR-based insulation boards, like ArmaGel®, which are designed for technical applications requiring high fire performance and thermal efficiency.

Sustainability Initiatives:

• Focus on products that contribute to energy savings and emission reductions

• Implementation of sustainable production technologies

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3️⃣ 8. Covestro AG

Headquarters: Leverkusen, Germany
Key Offering: Raw materials (polyols, isocyanates) for PIR foam

Covestro is a leading supplier of high-tech polymer materials, including the essential raw materials—polyols and methylene diphenyl diisocyanate (MDI)—used in the production of PIR foam. The company’s innovative material solutions form the foundation for high-performance insulation products worldwide.

Sustainability Initiatives:

• Aiming for operational climate neutrality by 2035

• Developing alternative raw material sources based on biomass and CO2

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2️⃣ 9. Huntsman Corporation

Headquarters: The Woodlands, Texas, USA
Key Offering: MDI, polyols, and polyurethane system formulations

Huntsman’s Polyurethanes division is a key global player in the production of MDI, a crucial component for PIR foam. The company provides a wide range of technologies and system solutions to insulation panel and boardstock manufacturers, enabling them to produce foams with specific performance characteristics.

Sustainability Initiatives:

• Innovation in bio-based and recycled content polyols

• Focus on creating solutions that enable energy efficiency and waste reduction

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1️⃣ 10. Recticel NV/SA

Headquarters: Brussels, Belgium
Key Offering: Eurothane® PIR insulation panels and boards

Recticel is a European specialist in polyurethane chemistry and a significant manufacturer of insulation products. Its Eurothane® PIR boards are widely used in construction for roof, wall, floor, and ceiling applications, prized for their excellent thermal performance and fire safety properties.

Sustainability Initiatives:

• Strong focus on producing insulation that delivers long-term energy savings

• Commitment to sustainable innovation and reducing the lifecycle impact of buildings

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🏗️ Outlook: The Future of Polyisocyanurate Boardstock Foam Is High-Performance and Sustainable

The Polyisocyanurate Boardstock Foam market is undergoing a significant evolution. While traditional performance metrics like R-value remain paramount, the industry is increasingly driven by sustainability imperatives, regulatory changes, and innovations in material science.

📈 Key Trends Shaping the Market:

• Phasedown of high-GWP HFC blowing agents, accelerating adoption of low-GWP alternatives like HFOs

• Integration of PIR insulation into prefabricated and modular construction systems for faster build times

• Growing demand for thinner, higher-performance insulation solutions in urban retrofitting projects

• Increasing stringency of building energy codes worldwide, mandating higher insulation levels

Read Full Report:
Polyisocyanurate Boardstock Foam Market – View in Detailed Research Report

The companies listed above are not only supplying essential insulation materials—they are actively enabling the construction of more energy-efficient, comfortable, and sustainable buildings for the future.