What Rockwool Limited does

Rockwool Limited is the UK operating subsidiary of the ROCKWOOL Group, a Danish multinational stone wool insulation manufacturer. The company manufactures and distributes a comprehensive portfolio of stone wool insulation products for residential and non-residential building applications, leveraging the natural properties of stone to provide fire resilience, thermal insulation, acoustic insulation, and durability. Core products include internal and external wall insulation, floor, roof, ceiling, and HVAC insulation, supported by specialized sub-brands: FirePro® for fire-stopping solutions, Rockpanel for cladding, RockFon for acoustic ceiling and wall solutions, and named products such as RAINSCREEN DUO SLAB and HARDROCK Multi-fix. The UK entity is headquartered in Pencoed, Bridgend, South Wales, where it operates its primary manufacturing facility with over 100 production workers, and is proposing a second major manufacturing facility at Peddimore, Birmingham, with operations targeted for 2030/31.

The company's business model is built on a multi-channel go-to-market approach combining indirect distribution through a UK stockist network with direct specification engagement targeting architects, specifiers, contractors, and installers. Pricing is quote-based and not publicly disclosed; revenue is generated through one-time product sales rather than recurring subscriptions. The company invests heavily in specification pull-through via CPD-accredited Training Academy programs, technical calculation tools (U-value calculator, ROCK-EQ HVAC calculator), white papers, and dedicated entry portals tailored to five distinct customer personas. The customer base spans healthcare, education, hospitality, residential, infrastructure, and government projects, with notable references including Grange University Hospital (£350m project), Farringdon Elizabeth Line station, and award-winning high-rise residential refurbishments. Regulatory positioning around the Building Safety Act 2022 and CCPI certification for the full UK & Ireland product range reinforces the company's non-combustible insulation value proposition in the post-Grenfell UK construction market.

The company operates within the broader ROCKWOOL Group's global manufacturing and distribution network, benefiting from parent-level scale on raw material sourcing and production. As of 2026, the company employs between 501 and 1,000 people in the UK and is navigating labor tensions at its Bridgend site while pursuing significant capacity expansion through the proposed Birmingham facility.

Name

Rockwool Limited

Legal name

ROCKWOOL Limited

Website

https://rockwool.co.uk

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Rockwool Limited is the UK subsidiary of the global ROCKWOOL Group, manufacturing stone wool insulation products for fire safety, thermal performance, and acoustic applications. It serves UK and Ireland construction markets across residential, commercial, healthcare, education, and infrastructure sectors via stockist distribution and direct specifier engagement.

Ownership category

akta.pro rank

Product category

Building Insulation Products

NAICS

Mineral Wool Manufacturing (327993)

SIC

Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290)

akta.pro primary industry

Mineral Wool (Rock/Slag Wool) Insulation (IMADAGAB)

akta.pro secondary industry

Metal Cladding, Soffits & Trim (Non-Panel Components) (IMADACAM)

Keywords

• Stone wool insulation
• Fire protection solutions
• Thermal insulation products
• Acoustic insulation materials
• Building insulation systems

Headquarters

HQ city

Pencoed

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Stone Wool Insulation Products: ROCKWOOL generates revenue through the manufacture and sale of stone wool insulation products for residential and non-residential buildings. Products are sold through a network of distributors and stockists as well as direct to specifiers and contractors. The company serves multiple application areas including internal wall insulation, external wall insulation, floor insulation, acoustic insulation, roof insulation, ceiling insulation, and HVAC insulation.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels8 records

Core offering

ROCKWOOL Limited manufactures and supplies stone wool insulation products for residential and non-residential buildings in the UK & Ireland, leveraging natural stone as the core raw material. The product portfolio covers internal wall, external wall, floor, roof, ceiling, acoustic, and HVAC insulation, plus specialist solutions such as FirePro® fire-stopping, Rockpanel cladding, RockFon acoustic ceilings, RAINSCREEN DUO SLAB, and HARDROCK Multi-fix. Supporting the products are technical calculation tools (U-value calculator, ROCK-EQ HVAC calculator) and a Training Academy offering CPD courses and fire-stopping training.

Product overview

ROCKWOOL Limited offers a comprehensive portfolio of stone wool insulation products and solutions for residential and non-residential building applications. The core offering is stone wool insulation, which has been produced for over 80 years using natural stone. The product range includes insulation for internal walls, external walls, floors, ceilings, roofs, HVAC systems, and acoustic applications, all leveraging the natural properties of stone wool for fire resilience, thermal performance, and acoustic insulation. Supporting sub-brands include FirePro® for fire-stopping solutions, Rockpanel for cladding, and RockFon for acoustic ceiling solutions. Named products such as RAINSCREEN DUO SLAB and HARDROCK Multi-fix (DD) serve specific applications. The company also provides technical calculation tools (U-value calculator, ROCK-EQ HVAC calculator) and a Training Academy offering CPD-certified courses.

Differentiator

Problem solved

Functional benefit

Brands

• FirePro: Fire-stopping solutions range for fire protection in buildings
• Rockpanel
• RockFon
• RAINSCREEN DUO SLAB
• HARDROCK

Products and services

• Stone Wool Insulation Core stone wool insulation products manufactured from natural stone, providing fire resilience, thermal insulation, acoustic insulation, and durability for residential and non-residential buildings. Distributed through UK stockist network and direct specification channels.
• Internal Wall Insulation Stone wool internal wall insulation that reduces heating bills and boosts indoor comfort for residential and non-residential buildings.
• External Wall Insulation Stone wool external wall insulation that improves the energy, thermal, and fire efficiency of buildings and creates more comfortable, energy-efficient spaces.
• Floor Insulation Stone wool floor insulation that improves a building's thermal and acoustic performance for separating floors and ground floors.
• Acoustic Insulation Stone wool acoustic insulation that protects building occupants from noise pollution and boosts comfort and privacy across residential and commercial buildings.
• Roof Insulation Stone wool roof insulation products for flat roofs, pitched roofs, metal roofs, and various roof configurations and constructions.
• Ceiling Insulation Stone wool ceiling insulation that helps retain heat and absorb sound between separating floors in residential and commercial buildings.
• Building Services and HVAC Insulation Stone wool HVAC and building services insulation providing energy-saving, fire-resistant, and noise-reducing properties for building efficiency.
• Passive Fire Protection Stone wool passive fire protection solutions that help secure occupant safety and raise buildings' fire resilience through non-combustible insulation.
• FirePro® Fire-Stopping Solutions FirePro® fire-stopping solutions range, including next-generation products, providing fire safety in buildings for specifiers, contractors, and installers.
• Rockpanel Cladding Stone wool-based cladding panels providing fire resilient, non-combustible insulation and cladding solutions for building exteriors.
• RockFon Acoustic Solutions Acoustic stone wool ceiling and wall solutions for commercial and residential buildings requiring noise control and acoustic performance.
• RAINSCREEN DUO SLAB® Stone wool insulation slab designed for use in rainscreen cladding systems, providing fire safety, thermal performance, and acoustic benefits for building façades.
• HARDROCK Multi-fix (DD) Stone wool insulation board with multi-fix fixings for flat roof applications, providing fire safety and thermal performance.
• Technical Calculation Tools Suite of technical support tools including U-value calculator and HVAC calculator (ROCK-EQ) for design, specification, and installation assistance on building projects.
• Training Academy Training academy offering courses including fire-stopping training and continuing professional development (CPD) programs for architects, specifiers, contractors, and installers.

Quantifiable outcome

• Wilmcote House is the largest residential EnerPHiT project delivered with residents in-situ in the world
• +3 more outcomes

Named customers12 records

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Property TectonicsminorStrategic or Co-development PartnerProperty Tectonics worked with ROCKWOOL and Rockpanel on the Bradford Maternity Hospital NHS project, providing architectural services for the cladding renovation project.

Scale indicators5 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Kingspan Group: Irish-headquartered global building envelope specialist with a major insulation division (Kingspan Insulation) covering rigid foam boards and stone wool. Direct competitor to ROCKWOOL in UK commercial and residential insulation specification, with overlapping fire-performance positioning and a comparable multi-channel go-to-market.
• Knauf Insulation: Global manufacturer of mineral wool (glass and rock) insulation for thermal, acoustic and fire applications. Directly competes with ROCKWOOL's stone wool range across UK commercial, residential and industrial projects, with very similar specification-led sales motions targeting architects and contractors.
• Superglass Insulation: UK-based manufacturer of glass mineral wool insulation operating a production facility in Stirling, Scotland. Competes with ROCKWOOL across UK residential and commercial thermal/acoustic insulation, particularly through merchant and stockist channels.
• URSA: European manufacturer of mineral wool (glass and XPS) insulation with a strong UK and Iberian presence. Direct competitor in the UK specifier-driven insulation market, particularly in glass wool batt and roll formats that overlap ROCKWOOL's thermal and acoustic applications.

Emerging players

• Armacell: Specialist manufacturer of flexible elastomeric foam and engineered foams for HVAC, building services and industrial insulation. Adjacent competitor to ROCKWOOL's HVAC and building-services insulation line, particularly where ductwork and pipework insulation is specified rather than wall/roof assemblies.
• Steico: German manufacturer of natural fibre insulation (wood-fibre, hemp, cellulose) and other building envelope products. Competes with ROCKWOOL in the sustainability-led, low-embodied-carbon segment of the UK insulation market, particularly in timber-frame and self-build projects.
• Recticel: Belgian manufacturer of polyurethane-based rigid foam insulation (including PIR) for construction and industrial applications. Competes with ROCKWOOL primarily on price-performance in the thermal-insulation segment, and increasingly in flat-roof and façade applications.

Broad incumbents

• Saint-Gobain (Isover): French multinational building materials group whose Isover brand is one of the world's largest manufacturers of glass mineral wool and other insulation. Competes with ROCKWOOL across all UK application areas and adds broader construction-products distribution leverage, but is not specialist in stone wool.
• Johns Manville: US-based manufacturer of mineral wool, glass fibre and engineered insulation products owned by Berkshire Hathaway. Competes with ROCKWOOL in commercial and industrial insulation, with overlapping fire-protection and HVAC duct insulation ranges.
• Owens Corning: US-headquartered global building materials company with a significant insulation business (including mineral wool and glass fibre insulation). Competes with ROCKWOOL in international specifications and overlaps in fire-resilient insulation, though with a much broader roofing and composites portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ROCKWOOLUK
• LinkedInlinkedin.com/company/rockwool-uk

Compliance2 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 Rockwool Limited