What Flumroc does

Flumroc AG is a Swiss manufacturer of stone wool (Steinwolle) insulation products for the construction industry, headquartered and producing exclusively at its facility in Flums, Switzerland. The company serves building professionals — architects, planners, and craftsmen — across residential, commercial, industrial, and public construction projects with insulation solutions addressing thermal performance, acoustics, fire protection, and, more recently, rainwater management. Its portfolio spans two main categories: Building Products (insulation boards for external walls, pitched and flat roofs, floors/ceilings, partition walls, acoustics, and the Flumroc-AGUA water retention system) and Technical Insulation Products (Conlit® fire-protection cladding for steel structures and ventilation ducts, and industrial/offshore applications). Flumroc is a wholly-owned subsidiary of the Denmark-headquartered ROCKWOOL Group, from which it draws shared technology platforms and brands such as Rockflow (marketed locally as Flumroc-AGUA), while operating independently as the Swiss production entity with its own brand.

The core technology is stone wool manufactured from natural stone melted at roughly 1500°C, spun into fibers, treated with water-repellent impregnation and binder, cured at ~270°C, and cut to dimension. Flumroc operates what it describes as the world's largest electric melting furnace for stone wool, powering two production lines exclusively with verified Swiss hydroelectric energy — cutting CO2 emissions from stone melting by 80% since April 2024. Notable product differentiators include the COMPACT PRO board (thermal conductivity λD = 0.033 W/(m·K) for plastered ETICS), the Generation FUTURO line using a formaldehyde-free natural binder (certified Cradle to Cradle Gold and Eurofins Indoor Air Comfort Gold), and non-combustible A1 fire performance with a melting point exceeding 1000°C.

Flumroc generates revenue through the manufacture and sale of stone wool insulation products, sold via a sales-led, direct field-sales model covering all of Switzerland in three national languages (German, French, Italian). The commercial organization comprises 25+ technical field consultants and 30+ service/consulting experts organized into four regional zones (West, Mitte, Ost, Ticino), supported by digital tools (eDOCU documentation, eValo renovation analysis, BIM data), technical consulting, and recycling/custom-cutting services. Pricing is unit-based and not publicly disclosed; price lists and terms are available to registered trade customers. No revenue figures are disclosed in the input data.

Name

Flumroc

Legal name

Flumroc AG

Website

https://flumroc.ch

Company type

Private

Founded year

1952

Operating status

Operating

Headcount range

251–500 employees

Short description

Flumroc is a Swiss manufacturer of stone wool insulation boards for thermal, acoustic, fire-protection, and rainwater-management applications in construction, serving architects, planners, and building professionals nationwide via a direct field-sales model.

Ownership category

akta.pro rank

Product category

Building Insulation Materials

NAICS

Mineral Wool Manufacturing (327993)

akta.pro primary industry

Blown-In/Loose-Fill Insulation Systems (IMADAGAK)

Keywords

• Stone wool insulation
• Building insulation products
• Fire protection insulation
• Technical insulation materials
• Acoustic insulation boards

Headquarters

HQ city

Flums

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Stone Wool Insulation Products: Flumroc generates revenue through the manufacture and sale of stone wool insulation products for the construction industry, including building products (external walls, pitched roofs, flat roofs, floors/ceilings, partition walls, acoustics, water management) and technical insulation (building services, industry, fire protection, accessories). Products are sold through direct sales consultants and distribution networks across Switzerland.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

Flumroc manufactures and sells stone wool insulation boards at its single Flums (Switzerland) facility, producing Building Products for thermal, acoustic, and fire insulation of external walls, pitched roofs, flat roofs, floors/ceilings, partition walls, and rainwater management, alongside Technical Insulation products (fire protection cladding for steel structures and ventilation ducts, high-temperature industrial insulation, accessories). The company also offers digital and consulting services — eDOCU (personalized documentation), eValo (virtual renovation analysis), BIM/electronic product data, custom cutting, a recycling service for offcuts, and technical consultation — sold primarily to architects, building planners, craftsmen, industrial specifiers, and public-sector clients in Switzerland.

Product overview

Flumroc is a Swiss manufacturer of stone wool insulation products headquartered in Flums, producing a comprehensive portfolio of building insulation solutions and technical insulation products. The core product portfolio consists of stone wool insulation boards and elements organized into two main categories: Building Products (Bauprodukte) including insulation boards for external walls, pitched roofs, flat roofs, floors/ceilings, partition walls, acoustics, and water management (Flumroc-AGUA); and Technical Insulation Products (Technische Dämmung) including fire protection cladding for steel structures, ventilation ducts, and industrial applications. Key product lines include Generation FUTURO (eco-friendly line with natural binder, Cradle to Cradle Gold certified) and COMPACT PRO (insulation board for rendered external thermal insulation systems with λD = 0.033 W/(m·K)). The company offers stone wool insulation products under brand names such as DUO, SOLO, PRIMA, MEGA, PARA, TOPA, and specialized Conlit® fire protection products. Supporting services include eDOCU (digital documentation), eValo (virtual renovation analysis platform), BIM services, technical consulting, and recycling programs. Flumroc produces exclusively at its Flums facility using Swiss stone and hydroelectric power, positioning as a Swiss-made quality manufacturer.

Differentiator

Problem solved

Functional benefit

Brands

• Generation FUTURO: Product line with natural binder for healthy indoor climate, certified Cradle to Cradle Gold
• COMPACT PRO
• Flumroc-AGUA
• Rockflow

Products and services

• Flumroc Building Products (Bauprodukte) stone wool insulation boards Stone wool insulation boards for external walls, pitched roofs, flat roofs, floors/ceilings, partition walls, acoustics, and water management in Swiss residential, commercial, and public buildings. Includes sub-product lines such as Flumroc-Dämmplatte 1 (Soft Board 1), SOLO, 3, DUO, DUO D20, DUO C, ECCO, ESTRA, TOPA, PARA, SOPRA, PRIMA, MEGA, Bodenplatte, Dämmplatte 341, and Feingranulat. Sold to architects, planners, and craftsmen across Switzerland.
• Flumroc Technical Insulation (Technische Dämmung) products Technical stone wool insulation products for building services, industry, and fire protection. Includes Conlit® Steelprotect Board (alu), Conlit® Steelprotect Section (alu), Conlit® Ductboard 30/60/90 LW, Conlit® Fix adhesive, Conlit® FPS intumescent joint profile, Flumroc-Dämmplatte T42 and FPI 700, Flumroc-Dämmmatte FMI 500, Flumroc FMI 500 FP, Flumroc-Stopfwolle FLB 700, Flumroc-Feingranulat F245, and Rockwool Spacerock RSK 830 (alu). Sold to industrial facilities, commercial buildings, hotels, and public institutions requiring fire protection (EI 30–180) and HVAC insulation.
• Generation FUTURO product line Eco-friendly stone wool insulation product line using a binder made predominantly from sustainable raw materials, without added formaldehyde. Meets highest indoor air quality requirements and is Cradle to Cradle Gold and Eurofins Indoor Air Comfort Gold certified. Marketed to building professionals and homeowners prioritizing healthy indoor climate.
• COMPACT PRO product line Stone wool insulation board for rendered/plastered External Thermal Insulation Composite Systems (ETICS) with leading thermal conductivity λD = 0.033 W/(m·K), eliminating the need for fire-break strips, with 100% dimensional stability and diffusion-open behavior enabling dark facades. Sold to architects, planners, and craftsmen.
• Flumroc-AGUA / Rockflow stormwater retention system Stone wool elements for short- or long-term retention of rainwater. Storage capacity up to 95% of total volume; discharge rate up to 0.55 L/s/m²; pressure resistance up to 140 kPa. Suitable for installation under car parks and roads, addressing urban flooding and sewer overload. Sold to civil engineering, infrastructure, and commercial/urban drainage projects.
• eDOCU digital documentation platform Free digital documentation tool for construction professionals to create personalized Flumroc product documentation tailored to specific project requirements. Marketed to architects, planners, and craftsmen across Switzerland.
• eValo virtual renovation analysis platform Virtual renovation analysis platform available at evalo.ch, providing energy renovation assessments for buildings. Marketed to homeowners, housing developers, and property managers seeking energy-efficient renovation of Swiss residential buildings.
• Technical consulting and field advisory service Technical advice, calculation tools, custom cutting (Zuschnittservice), and stone-wool recycling services delivered by 30+ service/consulting experts and 25+ field sales consultants across all Swiss regions. Sold to architects, planners, craftsmen, industrial specifiers, and public-sector projects.
• BIM objects and electronic product data BIM objects and electronic product data made available to architects and planners using digital design tools, supporting planning workflows across building and technical insulation projects. Sold to architects, planners, and contractors.

Quantifiable outcome

• 80% reduction in CO2 emissions from stone melting since April 2024 through hydroelectric-powered electric melting furnace
• +6 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered minor and core.

• PAMAG Engineering AGminorOthersPAMAG Engineering AG is a subsidiary company of Flumroc located in Flums. Young people can complete their construction draughtsperson (Konstrukteur:in) apprenticeship at PAMAG Engineering AG as part of Flumroc's vocational training program.
• ROCKWOOL GroupcoreStrategic or Co-development PartnerFlumroc is part of the ROCKWOOL Group, a global leader in stone wool insulation. ROCKWOOL provides access to shared technology platforms, the Rockflow water management brand (sourced as Flumroc-AGUA), and ROCKWOOL Technical Insulation for industry and offshore applications. Flumroc operates independently as the Swiss production entity with its own brand and Swiss production.
• ROCKWOOL Technical InsulationcoreStrategic or Co-development PartnerROCKWOOL Technical Insulation delivers thermal, acoustic, fire-safe, and energy-efficient insulation solutions for process industry, shipbuilding, and offshore applications. Flumroc references these products as part of its extended portfolio for industry and offshore insulation projects.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• ROCKWOOL Group: Flumroc's Danish parent company and global leader in stone wool insulation. ROCKWOOL produces comparable stone wool boards and technical insulation across multiple continents, sharing technology platforms (including Rockflow stormwater systems) with Flumroc and competing in adjacent European markets.
• Kingspan Group: Global building envelope leader offering rigid PIR insulation, insulated panels, and other high-performance building products. Competes with Flumroc in commercial and industrial envelopes where thinner, higher-R-value assemblies are specified, and is an indirect substitute in flat-roof and ETICS applications.
• BASF: BASF produces Neopor (graphite-enhanced EPS) and Styrodur (XPS) insulation raw materials used by converters across Europe. Represents a broad incumbent supplying substitute chemistries to insulation manufacturers competing with Flumroc's stone wool boards in residential and commercial envelopes.

Direct peers

• Saint-Gobain Isover: Saint-Gobain's mineral wool insulation brand, offering glass wool and stone wool products for buildings and technical applications. Competes head-to-head with Flumroc in European specification markets, including cross-border supply into Switzerland for residential, commercial, and industrial projects.
• Knauf Insulation: Knauf's mineral wool (glass and stone) insulation business serving European residential and commercial construction. Directly comparable product portfolio covering thermal, acoustic, and fire protection applications, competing for architect and contractor specifications in Switzerland and across Europe.
• Paroc (Owens Corning): Paroc produces stone wool insulation for building and technical applications, now operating under Owens Corning. Directly comparable to Flumroc in thermal, acoustic, and fire-protection stone wool categories and competes in Nordic and broader European specification markets.
• Ursa: Ursa manufactures glass wool and extruded polystyrene insulation for European residential and commercial construction. Competes with Flumroc on thermal-acoustic building envelope projects and on price-sensitive residential applications across continental Europe.

Emerging players

• Steico: Steico manufactures wood-fiber insulation boards and flexible insulation for roofs, walls, and floors. An emerging alternative in the European low-carbon envelope market, directly substituting stone wool in residential projects where bio-based materials are prioritized by specifiers.
• Recticel: Belgian manufacturer of PIR/PUR rigid foam insulation and acoustic products for construction and industry. Competes with Flumroc on high-performance thin assemblies, particularly in flat-roof and ETICS applications where compactness is valued over fire class A1.
• Unilin Insulation: Unilin produces PIR and PUR rigid foam insulation under brands such as Utherm for European building applications. A direct substitute to stone wool in pitched-roof, ETICS, and floor insulation segments where thermal performance per millimeter is the key specification driver.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 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 Flumroc