Warmerwall
- Company typePrivate
- Founded2008
- HeadquartersCheltenham, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Warmerwall does
Warmerwall operates as the brand identity for Polysteel (UK) Ltd, a UK-based private limited company headquartered in Salisbury with manufacturing operations in Newport, South Wales. The company manufactures and supplies Insulated Concrete Formwork (ICF) systems — specifically Polyblok280 (150mm concrete core) and Polyblok330 (200mm concrete core) — composed of expanded polystyrene (EPS) forms joined by nickel-plated steel ties and precision tongue-and-groove joints, which are then filled with reinforced or plain concrete on-site to create structural walls. Unlike most UK ICF competitors that use plastic webs, Polysteel's steel tie technology is claimed to enhance thermal mass performance by approximately 30%, and the pre-made rigid block format reduces concrete-pour blowout risk.
The business operates a sales-led model combining direct manufacturer supply with structural design services. Customers include self-builders, small builders, developers, and specialist contractors across residential, multi-storey, agricultural/industrial, swimming pool, basement, retaining wall, and equestrian segments in the UK, with international export to France, North Africa, and the Middle East. Revenue streams consist of one-time ICF block sales at £55-£70/m2, professional structural design services (10% of ICF wall cost with a £950 minimum), and design-and-supply bundled offerings for export customers. Delivery is handled from UK stock within 2-3 days via a warehousing partnership with Virginia Hayward Logistics.
The company holds a British Board of Agrément (BBA) certificate specifically covering basement construction use, NHBC approval, and Council of Mortgage Lenders approval (2010), giving it regulatory standing that few UK ICF manufacturers match. In 2022 the company underwent a management takeover led by Will Witt, a Chartered Civil and Structural Engineer with 50+ years of experience, who also leads sister company Bluepools (ICF pool specialist). The company employs 1-10 people, has no disclosed revenue or external funding, and operates as a privately held, family-led specialty manufacturer.
Warmerwall firmographics
Firmographics- Name
- Warmerwall
- Legal name
- Polysteel (UK) Ltd
- Website
- https://polysteel.co.uk
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Ownership category
- akta.pro rank
Warmerwall industry classification
Industry- Product category
- Building Materials / Insulated Concrete Formwork Manufacturing
- NAICS
- Other Concrete Product Manufacturing (327390), Concrete Block and Brick Manufacturing (327331)
- SIC
- Concrete Products, Except Block & Brick (3272)
- akta.pro primary industry
- Retaining Wall Blocks & Segmental Wall Systems (IMADABAJ)
- akta.pro secondary industry
- Concrete Pavers, Hardscape & Retaining Wall Systems (IMADAAAE)
Keywords
Where Warmerwall is headquartered
LocationHeadquarters
- HQ city
- Cheltenham
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Warmerwall business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Supply Chain, Personnel, Marketing or Sales, Technology or R&D
Revenue model
- ICF Block Sales: Sale of Polyblok280 and Polyblok330 ICF blocks manufactured in Newport, Wales. Blocks are supplied from stock or manufactured to order with delivery within 2-3 days for standard orders.
- Structural Design Services: Engineering design services for ICF projects including concept design, structural layout drawings, foundation details, reinforcement schedules, and construction documentation. Fee is 10% of estimated ICF wall cost with minimum of £950.
- International Export: Supply and export of ICF blocks globally, including design services and transportation logistics to customer-specified ports.
- Pool Equipment Supply (via Bluepools): Sister company Bluepools supplies pool equipment for ICF pool projects including detailed design folios, training and support.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | ICF Blocks: £55-£70/m2 |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Warmerwall product offering
Product offeringCore offering
Warmerwall (Polysteel (UK) Ltd) manufactures and supplies Insulated Concrete Formwork (ICF) blocks — Polyblok280 with a 150mm concrete core for above-ground walls and Polyblok330 with a 200mm concrete core for deeper retaining walls. The blocks are precision-made in Newport, Wales from expanded polystyrene (EPS) forms with nickel-plated steel ties and tongue & groove joints, and are sold alongside structural engineering design services, project planning support, and international export supply for residential, commercial, agricultural, basement, pool, and retaining-wall construction.
Product overview
Warmerwall is a brand associated with Polysteel (UK) Ltd, a UK-based manufacturer of Insulated Concrete Formwork (ICF) systems. The product portfolio centers on Polyblok280 and Polyblok330 ICF blocks with steel ties, complemented by structural design services, project planning support, and ICF supply/export services. Polyblok280 features a 150mm concrete core for standard residential applications, while Polyblok330 provides a 200mm concrete core for deeper retaining walls and higher structural requirements. The company supports customers through full design services, installation guidance, and stock availability from UK manufacturing facilities.
Differentiator
Problem solved
Functional benefit
Brands
- Bluepools: Sister company of Polysteel (UK) Ltd that has used ICF forms to build swimming pools for 12 years in France and in the UK since 2013.
Products and services
- Polyblok280
Quantifiable outcome
- Energy savings of 60% compared to timber frame walls over 30-year period (ICFMA 2016 study)
- +4 more outcomes
Companies that use Warmerwall
Customer profileSegments7 records
Ideal customer profiles5 records
Warmerwall technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Warmerwall partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- Moulded Foams LtdcoreUK-based manufacturer of PolySteel ICF blocks at Blackwood Industrial Estate, Newport, South Wales. Manufacturing uses Hirsch EPS molding machines and molds. Partnership provides localized UK manufacturing capacity reducing delivery times.
- Virginia Hayward LogisticscoreWarehousing and delivery partner operating from 400,000 sq ft warehouse near A303 between Shaftesbury and Wincanton. Handles storage and distribution of PolyBloks across UK.
- HirschcoreWorld-leading designer and manufacturer of EPS molding machines for 35 years. Provides production moulds and equipment for Moulded Foams manufacturing facility.
- Bluepools LtdcoreSister company of Polysteel (UK) Ltd. Specializes in ICF pool design and construction with 12 years experience in France and UK since 2013. Provides design folios, training, and support for ICF pool projects. Can supply pool equipment alongside Polysteel ICF blocks.
- American PolySteelcoreOriginal ICF manufacturer founded 1978 in North America. Polysteel (UK) Ltd acquired UK manufacturing rights in 2008. Licensed original Werner Gregori patent technology for UK production.
- Insulated Concrete Forms Association (ICFA)minorIndustry trade association for ICF manufacturers. Promotes insulated concrete formwork construction and standards in the building industry.
- British Board of Agrément (BBA)coreProvides product testing and certification for building industry. BBA certification required for NHBC insurance approval. Polysteel maintains current BBA certificate ensuring building regulation compliance.
- National House Building Council (NHBC)coreUK's leading building insurance and warranty provider. Requires BBA certification for components. Polysteel BBA certificate enables NHBC coverage for ICF-built properties.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
Warmerwall competitors and assessment
Company assessmentBroad incumbents
- Aggregate Industries (Holcim): Major UK supplier of concrete, aggregates, and cement-based building products. Adjacent to Polysteel as a much larger incumbent that supplies the raw concrete and block materials that complement Polysteel's ICF system, and could move into ICF manufacturing given scale.
- CEMEX UK: Large UK producer of ready-mix concrete, aggregates, and concrete building products. Comparable as a broad concrete-products incumbent that competes indirectly with Polysteel by supplying the conventional block and ready-mix alternatives to ICF construction.
Direct peers
- Logix ICF: Manufacturer of ICF wall forms for residential, commercial, and institutional projects across North America. Closely comparable to Polysteel on product (stay-in-place EPS forms for concrete walls), customer base (builders and self-builders), and BBA-equivalent code certifications.
- Nudura: One of the largest North American ICF manufacturers, offering a full ICF block system with proprietary webs. Directly comparable to Polysteel as a competing ICF form supplier for residential and commercial walls, with broader global distribution and a wider product line.
- Quad-Lock Building Systems: ICF manufacturer based in North America with a global distribution footprint. Comparable to Polysteel on EPS ICF blocks, integrated design services, and serving self-build, residential, and commercial construction.
- Fox Blocks (Amvic): ICF block manufacturer serving residential, commercial, and institutional construction in North America. Comparable on product form (EPS ICF blocks), use cases (foundations, walls, pools), and certification-driven go-to-market (ICFA member, code approvals).
- Nitterhouse Concrete Products: US precast and concrete product manufacturer with ICF-related lines. Comparable on concrete-product manufacturing expertise and structural wall offerings for commercial and residential markets.
- BuildBlock ICF: US-based ICF manufacturer producing expanded polystyrene forms for above- and below-grade walls. Direct peer to Polysteel in product technology, target use cases (residential, commercial, basements, pools), and channel approach (manufacturer-direct with engineering support).
Regional players
- Becosan ICF: UK-focused ICF supplier and installer. Direct UK competitor to Polysteel serving the same self-builder and small-developer market with similar EPS ICF products, BBA-style certifications, and a design-and-supply service model.
- Beco Products: UK distributor of Beco ICF wall formwork and related construction products. Comparable to Polysteel in UK domestic ICF supply, residential and commercial project focus, and supply-with-design service offering.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Warmerwall social profiles
Digital presenceWarmerwall compliance and trust
Trust signalCompliance2 records
Warmerwall financial estimates
Financial estimateRevenue estimate
Valuation estimate
Warmerwall leadership team
Management profileNumber of profiles
Profiles3 records
Warmerwall funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Warmerwall M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Warmerwall
What does Warmerwall do?
Warmerwall (Polysteel (UK) Ltd) manufactures and supplies Insulated Concrete Formwork (ICF) blocks — Polyblok280 with a 150mm concrete core for above-ground walls and Polyblok330 with a 200mm concrete core for deeper retaining walls. The blocks are precision-made in Newport, Wales from expanded polystyrene (EPS) forms with nickel-plated steel ties and tongue & groove joints, and are sold alongside structural engineering design services, project planning support, and international export supply for residential, commercial, agricultural, basement, pool, and retaining-wall construction.
Is Warmerwall a public or private company?
Warmerwall is a private company. It is classified as family owned and is currently operating.
When was Warmerwall founded?
Warmerwall was founded in 2008. It employs 1 to 10 people.
Where is Warmerwall based?
Warmerwall is headquartered in Cheltenham, United Kingdom, in the Europe region.
How does Warmerwall make money?
Four revenue lines are on record. ICF Block Sales are the primary driver. The others are structural Design Services, international Export and pool Equipment Supply (via Bluepools).
Who are Warmerwall's main competitors?
Broad incumbents on record are Aggregate Industries (Holcim) and CEMEX UK. Direct peers are Logix ICF, Nudura, Quad-Lock Building Systems, Fox Blocks (Amvic), Nitterhouse Concrete Products and BuildBlock ICF. Regional players are Becosan ICF and Beco Products.
Does Warmerwall have an API?
No public API is recorded for Warmerwall.
What industry is Warmerwall in?
Warmerwall's product category is Building Materials / Insulated Concrete Formwork Manufacturing. Its primary akta.pro industry code is IMADABAJ, Retaining Wall Blocks & Segmental Wall Systems, with a secondary code of IMADAAAE, Concrete Pavers, Hardscape & Retaining Wall Systems. Its NAICS code is 327390 and its SIC code is 3272.