What Stiferite does

Stiferite S.p.A. a socio unico is an Italian manufacturer of rigid polyurethane and polyiso (PIR) foam thermal insulation panels, headquartered in Padova, Italy. Founded in 1963 by Ferdinando Stimamiglio as the first Italian producer of rigid polyurethane insulation panels (originally as STIFER in Pomezia, with production relocated to Padova in 1968), the company has accumulated over 60 years of market presence and produced more than 170 million m² of panels over its lifetime. The 51-100 employee firm transitioned its full product range to PIR-polyiso foam technology around 2000-2005 and operates three production lines (the third commissioned in 2024, enabling panels up to 200mm thickness).

The product portfolio spans three tiers: (1) core insulation panels (GT, GTE, Class B, Class S, Class SK, Fire B, AI5 Edilizia) differentiated by facings, fire performance, and vapor-barrier properties; (2) coupled panels combining insulation with gypsum board (RP) or bituminous membranes (GT3/GT4/GT5, Fire B8); and (3) complete integrated systems (Isoventilato for ventilated roofs, Pendenzato for sloped roofs, WallEvo for facades, Isocanale for air ducts). The Fire B facer technology with expandable graphite achieves Euroclasse B-s1,d0 - the highest fire classification for organic insulation materials. Thermal conductivity values of 0.022-0.027 W/mK enable 25-85% thickness reductions versus competing materials. The full range carries CE marking under UNI EN 13165, plus ISO 9001/14001/45001, FM Approved, Eurofins Indoor Air Comfort Gold, EPDs verified by IBU, ReMade in Italy, and multiple ETA certifications covering ETICS systems with partners including MAPEI, CAPAROL, VIEROCLIMA, THERMOPHON, and ARD.

The business model is B2B hardware sales of insulation panels and systems to construction professionals (architects, engineers, surveyors, contractors, waterproofers, roofers) and industrial customers (HVAC, prefabricated elements). Distribution relies on a network of 17 Area Managers covering all Italian regions, supported by phone/email contact, downloadable PDF price lists, an online thermal transmittance calculator, BIM/Revit object downloads, and ANIT PAN/ECHO database integrations. Pricing is not publicly disclosed; customers contact regional managers for quotations. The company is privately held with €7,737,000 share capital, operates only in Italy, and shows no public funding, M&A, or international expansion activity. Named end-customers span government (Italian Supreme Court), healthcare, education, hospitality, residential retrofits under Superbonus 110%, and industrial facilities.

Name

Stiferite

Legal name

Stiferite Spa a socio unico

Website

https://stiferite.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

51–100 employees

Short description

Stiferite is an Italian manufacturer of rigid polyurethane and polyiso (PIR) foam thermal insulation panels and integrated building systems, serving Italian construction professionals, contractors, and industrial customers through a 17-person Area Manager field-sales network since 1963.

Ownership category

akta.pro rank

Product category

Building Insulation Materials

NAICS

Laminated Plastics Plate, Sheet (except Packaging), and Shape Manufacturing (32613)

SIC

Plastics Foam Products (3086)

akta.pro primary industry

Structural Insulated Panels (SIP) & Foam-Core Composite Panel Manufacturing (IMANAIAK)

Keywords

• Rigid foam insulation
• Polyurethane panels
• Building insulation materials
• Thermal insulation products
• Roof and wall insulation

Headquarters

HQ city

Padua

HQ country

Italy

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Insulation Panel Sales: One-time sale of rigid polyurethane/polyiso foam insulation panels to construction companies, building professionals, and industrial customers. Products include standard panels, coupled panels (with bituminous membranes, drywall), and complete systems (ventilated roofs, sloped systems).

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Stiferite manufactures rigid polyurethane (PUR) and polyiso (PIR) foam insulation panels sold under its own brand to the Italian construction industry. The portfolio spans three lines: core panels (GT, GTE, Class B, Class S, Class SK, Fire B, AI5 Edilizia), coupled panels combining insulation with gypsum board or bituminous membranes (RP, GT3-GT4-GT5, Fire B8), and complete systems for ventilated roofs, sloped roofs, facades, and air ducts (Isoventilato, Pendenzato, WallEvo, Isocanale). All panels carry CE marking per UNI EN 13165 and serve flat roofs, pitched roofs, walls (including ETICS and ventilated facades), floors, and thermal bridges.

Product overview

Stiferite is an Italian manufacturer of rigid polyurethane/polyiso foam insulation panels for buildings. The product portfolio consists of three main categories: (1) Core insulation panels (GT, GTE, Class B, Class S, Class SK, Fire B, AI5 Edilizia) with various coatings for different applications; (2) Coupled/acoppiati panels combining insulation with gypsum board (RP), bituminous membranes (GT3/GT4/GT5, Fire B8); and (3) Complete insulation systems including Isoventilato for ventilated roofs, Pendenzato for sloped roofs, WallEvo for facades, and Isocanale for air ducts. All products are manufactured using polyiso (PIR) foam technology, feature CE marking per UNI EN 13165, and offer among the lowest thermal conductivity values for organic insulation materials. Products serve applications across building envelopes: flat and pitched roofs, walls (cappotto/external, ventilated facades, internal), floors, and thermal bridges.

Differentiator

Problem solved

Functional benefit

Brands

• WallEvo: Patented system for continuous facade insulation, applicable with main construction techniques and external finishes. Entirely dry installation for rapid installation and maximum reliability.
• Isoventilato
• Sistema Pendenzato
• Stiferite RP
• GT3-GT4-GT5
• Stiferite Fire B8
• Stiferite AI5 Edilizia

Products and services

• Stiferite GT Insulation panel in polyiso foam with multilayer gas-tight coating on both faces. Standard dimensions 1200 x 1000 mm, available in various thicknesses. Indicated for flat roofs, walls, and floors.
• Stiferite GTE Insulation panel in polyiso foam with gas-tight aluminum coating on both faces providing vapor barrier on the warm side. Indicated for flat roofs, walls, and floors where vapor barrier is required.
• Stiferite Class B Insulation panel with bituminous glass fiber coating on upper face suitable for torching application, and mineral saturated glass fiber on lower face. Indicated for roofs under bituminous waterproofing membranes where high torching resistance is required.
• Stiferite Class S Insulation panel with saturated glass fiber coating on both faces. Versatile panel indicated for flat roofs under synthetic or bituminous membranes, ballasted roofs, pitched roofs, shaped or curved roofs, walls, and floors. Available in Class SH version with 200 kPa compression resistance.
• Stiferite Class SK Insulation panel with saturated glass fiber coating on both faces. Specifically indicated for walls with external thermal insulation composite systems (ETICS/cappotto), first floor over portico, and thermal bridge correction. Used in ETA-certified ETICS systems with multiple partners.
• Stiferite Fire B Insulation panel with fire-resistant coating - glass fiber with expandable graphite on fire-exposed side (Stiferite Fire B facer) and mineral saturated glass fiber on other side. Euroclasse B-s1,d0 fire reaction. Indicated for ventilated facades and applications requiring highest fire reaction performance. FM Approved.
• Stiferite AI5 Edilizia Insulation panel in polyiso foam coated on both faces with embossed aluminum 50 μm. Provides maximum insulation performance and vapor barrier. Indicated for flat roofs, walls, floors with radiant heating systems, dry installation, and applications requiring vapor barrier.
• Stiferite RP Coupled panel combining polyiso insulation with 12.5 mm gypsum board. Features integrated vapor barrier and multi-layer gas-tight coating. Indicated for interior wall and ceiling insulation with minimal space reduction. Thermal conductivity λD=0.022 W/mK.
• Stiferite GT3 - GT4 - GT5 Coupled panels combining Stiferite GT with different bituminous polymer membranes. GT3 with 3 kg/m² glass fiber reinforced membrane, GT4 with 4 mm polyester reinforced membrane, GT5 with 4.5 kg/m² slate-finished polyester reinforced membrane. Indicated for insulation and primary waterproofing of flat and pitched roofs.
• Stiferite Fire B8 Coupled panel with polyiso insulation and 4 mm tri-reinforced bitumen polymer membrane. Features 8 cm lateral tongues. Broof t2 classified, Euroclasse B s1 d0 fire reaction. Indicated for hot roof applications.
• Stiferite Isoventilato Complete system for ventilated pitched roofs. Panel with polyiso foam, mineral saturated fiber on lower face, and vapor-permeable water-impermeable coating on upper face. Contains two OSB3 strips embedded in foam. Indicated for ventilated roof insulation.
• Stiferite Sistema Pendenzato Prefabricated thermal insulation system for creating roof slopes. Combines Stiferite panels (GT, Class S, Class B, or Fire B) with custom-shaped EPS base (EPS 150 or EPS 200) for correct water drainage slope. Custom-made and coded for easy installation.
• Stiferite Sistema WallEvo Patented continuous facade insulation system. Entirely dry-installed for rapid application, maximum reliability, and reduced installation defects. Compatible with major construction techniques and external finishes. Suitable for reinforced cappotto and applicable on all surfaces in any weather condition.
• Stiferite Isocanale Pre-insulated air duct system specifically designed for air transport. Manufactured by separate division at isocanale.com for HVAC applications.

Quantifiable outcome

• 25-85% thickness reduction compared to common insulation materials to achieve U-value of 0.18 W/m²K
• +2 more outcomes

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and notable.

• ANIT (Associazione Nazionale per l'Isolamento Termico e acustico)coreStrategic or Co-development PartnerIndustry association for thermal and acoustic insulation. STIFERITE provides product database for ANIT's PAN and ECHO software tools used for calculating thermal and acoustic performance parameters in building design.
• ANPE (Associazione Nazionale Poliuretano Espanso)coreStrategic or Co-development PartnerItalian association promoting polyurethane foam insulation products. STIFERITE is an active member contributing to industry standards and environmental communication.
• Cortexa (Consorzio per la Cultura della Qualità in Edilizia)coreStrategic or Co-development PartnerConsortium promoting quality in construction, specifically for external thermal insulation systems (ETICS). STIFERITE is a main partner providing Class SK panels for certified ETICS solutions.
• MAPEInotableTechnology or IntegrationETA 21/0945 - MAPEI ETICS systems using STIFERITE Class SK panels. Joint certification for thermal insulation composite systems.
• CAPAROLnotableTechnology or IntegrationETA 25/0760 - CAPAROL ETICS systems using STIFERITE insulation panels. Co-certified facade insulation solutions.
• VIEROCLIMAnotableTechnology or IntegrationETA 23/0839 - VIEROCLIMA SK systems; ETA 25/0527 - VIEROCLIMA WOOD SK systems using STIFERITE Class SK insulation.
• IBU (Institut Bauen und Umwelt)coreOthersGerman institute serving as Program Holder for EPDs (Environmental Product Declarations). Selected as third-party verification body for STIFERITE's EPD process, particularly active in building products sector. STIFERITE obtained IBU certification for EPD declaration process in 2016.

Scale indicators5 records

Recent moves9 records

Expansion highlights4 records

Others

• BASF: Global chemical major supplying polyurethane systems and raw materials (polyols, isocyanates) used in PIR foam panel production. Not a direct competitor but a key enabler of the supply chain in which Stiferite operates, with downstream insulation system adjacencies through BASF's Masterpren and Neopor product lines.

Direct peers

• Recticel: Belgian manufacturer of rigid polyurethane and PIR foam insulation panels for roofs, walls, and floors across Europe. Directly comparable to Stiferite on product (PIR rigid foam panels), target customer (construction professionals and building envelope specifiers), and certifications (CE, EPD, FM-style approvals).
• Unilin Insulation: Belgian PIR and PUR rigid foam insulation panel manufacturer (formerly Xtratherm) serving European flat-roof, pitched-roof, and wall applications. Directly comparable to Stiferite in terms of product type (PIR foam panels), target market (construction professionals), and technical performance positioning.
• Bauder: European manufacturer of flat-roof and pitched-roof insulation systems including PIR foam panels, with strong specification presence in commercial and public buildings. Directly comparable to Stiferite on flat-roof PIR panels, technical documentation depth, and specification-led B2B sales motion.

Broad incumbents

• IKO: European roofing and waterproofing manufacturer with PIR rigid foam insulation products. Comparable to Stiferite in the coupled-panel and flat-roof insulation segment but with a broader waterproofing-led portfolio and multi-country distribution.
• Kingspan Group: Global leader in insulated panels and building envelope solutions, with a large PIR rigid foam insulation business alongside roofing, waterproofing, and data center infrastructure. Larger incumbent that overlaps with Stiferite in PIR insulation panels but operates across a much broader portfolio and geography.
• Knauf Insulation: Major global insulation manufacturer with a broad portfolio spanning mineral wool, PIR, and other rigid foam products. Larger incumbent that overlaps with Stiferite in PIR rigid foam panels but is primarily positioned in mineral wool for residential and commercial construction.
• Soprema: European-wide manufacturer of waterproofing and thermal insulation systems for buildings, including rigid foam insulation panels. Overlaps with Stiferite in flat-roof and wall insulation but offers a much wider product portfolio spanning membranes, acoustic products, and waterproofing.

Regional players

• Ediltec: Italian producer of thermal and acoustic insulation systems including PIR and EPS rigid foam panels. Comparable product offering in the Italian market, particularly in roof and wall insulation, positioning it as a domestic peer to Stiferite.
• Brianza Plastica: Italian manufacturer of rigid polyurethane and polyiso insulation panels for construction applications. Directly comparable product portfolio (PIR foam panels for roofs, walls, and floors) with a primarily Italian market focus, making it the closest regional peer to Stiferite.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/Stiferite
• Facebookfacebook.com/Stiferite
• LinkedInlinkedin.com/company/stiferite
• Instagraminstagram.com/Stiferite
• Xx.com/stiferite

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

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 Stiferite