What EWI Pro does

EWI Pro Insulation Systems Ltd is a UK-based system designer and manufacturer of External Wall Insulation (EWI) and render solutions, founded in 2011 and operating from Chessington (London) with training academies in Aylesbury, Birmingham, and Bradford. The company designs and manufactures complete, warranted EWI systems across four insulation technologies — Expanded Polystyrene (EPS), Mineral Wool, Kingspan K5 phenolic, and Wood Fibre — paired with proprietary basecoats, adhesives, primers, fibreglass mesh, and a range of topcoat renders including silicone, monocouche, mosaic, and the Lime Heritage Range. Its flagship DuraShield Pro (DSP), launched in 2024, combines polymer-modified basecoat chemistry with a 60-year warranty and is the only EWI system eligible for the maximum 45% ECO4 funding uplift under Ofgem Innovation Link status.

The business generates revenue primarily through material sales via its ewistore.co.uk e-commerce platform, national distributor Travis Perkins, and seven regional stockists across the UK and Northern Ireland. Secondary revenue streams include paid training courses (~£180 + VAT per person per day) delivered through three academies, and an Approved Installer referral network that connects homeowners with vetted installers. Free technical specification services, 3D Revit modelling, WUFI moisture analysis, Psi-value thermal bridging calculations, and funding guidance (ECO4, SHDF, HUG, GBIS) function as demand-generation and customer-acquisition tools rather than direct revenue lines. EWI Pro holds two BBA certificates, four UKTAs, an Irish NSAI certificate, two EOTA European Technical Assessments, and ISO 9001/14001 certifications, and operates as a privately held limited company with no disclosed external funding.

Customers are split across three primary segments: UK homeowners (direct and via the installer matching service), Approved Installers and contractors (procurement, training, project leads), and local authorities plus housing associations (social housing decarbonisation, PAS 2035-compliant retrofit programmes). The company employs between 51 and 100 staff, including a Technical & Training team with over 50 years of combined industry experience, a field-based Business Development team engaging architects, specifiers, and developers, and dedicated compliance, marketing, and architectural technology functions. Recent strategic activity has centred on premium product differentiation (DSP), regulatory capture (Ofgem Innovation Status), capacity building (Warm Homes Skills Programme with Exeter College), and digital demand tooling (Insulation Grant Funding eligibility calculator).

Name

EWI Pro

Legal name

EWI Pro Insulation Systems Ltd

Website

https://ewipro.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

51–100 employees

Short description

EWI Pro is a UK-based designer and manufacturer of External Wall Insulation systems and renders, supplying homeowners, approved installers, and social housing providers across EPS, Mineral Wool, Kingspan K5, Wood Fibre, and its premium DuraShield Pro range.

Ownership category

akta.pro rank

Product category

External Wall Insulation Systems

NAICS

Gypsum Product Manufacturing (327420)

SIC

Concrete, Gypsum & Plaster Products (3270), Paints, Varnishes, Lacquers, Enamels & Allied Prods (2851)

akta.pro primary industry

Facade & Cladding Systems (Rainscreens, Panels, EIFS, Siding) (IMAFAMAB)

akta.pro secondary industries

Insulation & Air/Vapor Barrier Systems (Thermal, Acoustic, WRB/AVB) (IMAFAMAD), Drywall, Plastering & Insulation (EDAOAAAE)

Keywords

• External wall insulation
• Render systems
• Insulation boards
• Construction chemicals
• Building envelope products

Headquarters

HQ city

Aylesbury

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sale of EWI and Render System Materials: EWI Pro manufactures and sells a complete range of EWI system materials including insulation boards (EPS, Mineral Wool, Kingspan K5, Wood Fibre), renders (Silicone, Monocouche, Mineral, Acrylic, Mosaic), basecoats, adhesives, primers, mesh, lime products, and building materials. Products are sold via the ewistore.co.uk e-commerce platform, direct account relationships, and through third-party stockists including Travis Perkins and regional distributors.
2. Training Academy Courses: EWI Pro operates three training academies (Aylesbury, Birmingham, Bradford) offering paid training courses including Introduction to EWI, Render-Only Systems, Spray Machine Training, Product Familiarisation, Advanced Rendering Techniques, PAS2035 Training, and bespoke on-site training. Course fees are approximately £180 + VAT per person per day.
3. Installer Network Referral & Lead Generation: EWI Pro connects homeowners with approved installers through its Find an Installer matching service, generating referral relationships and installer programme revenues. Approved installers gain access to the installer portal, project leads, training, customised installer packs, and scaffold banners.
4. Technical Specification Services: Free site-specific specifications are provided for EWI projects, incorporating substrate testing (pull-out, wind-load, moisture, porosity), thermal imaging, WUFI analysis, and Psi-value calculations. Specifications cover everything from small garden offices to multi-storey residential properties.

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels7 records

Core offering

EWI Pro designs, manufactures, and supplies complete External Wall Insulation (EWI) and render-only systems for the UK construction and retrofit industry. Its product portfolio includes four insulation substrates (EPS, Mineral Wool, Kingspan K5 phenolic, and Wood Fibre) paired with proprietary basecoats, adhesives, primers, mesh, and a full range of topcoat renders (silicone, monocouche, mineral, acrylic, mosaic, and lime-based heritage systems). The company also operates three Training Academies, delivers free technical specifications, 3D modelling, on-site support, and funding guidance to homeowners, installers, architects, and social housing providers.

Product overview

EWI Pro is a UK-based system designer and manufacturer of External Wall Insulation (EWI) and render systems, operating since 2011/2016. Its portfolio is a coordinated ecosystem of insulation systems and associated products designed to work together as complete, warranted build-ups. The core product lines include four EWI insulation systems — EPS (Expanded Polystyrene), Mineral Wool, Kingspan K5 (phenolic), and Woodfibre — each paired with complementary basecoats, adhesives, primers, and fibreglass mesh reinforcement. These are finished with a range of topcoat renders spanning thin-coat silicone renders (including Nano Drex Silicone Render, Premium Bio Silicone Render), monocouche scratch renders, mosaic renders, and the Lime Heritage Range (lime-based NHL renders and plasters) for historic buildings. DuraShield Pro (DSP) represents the premium flagship system with a 60-year warranty and Ofgem Innovation Link accreditation. Beyond physical products, the offering extends to digital planning tools (Materials Calculator, Insulation System Advisor, Savings Calculator), technical specification and 3D modelling services, a Training Academy with three UK facilities, on-site technical support, and funding guidance for government schemes.

Differentiator

Problem solved

Functional benefit

Products and services

• Renders (Thin Coat) Range of thin-coat render finishes including Silicone Render, Silicone Silicate Render, Mineral Render, Acrylic Render, Premium Bio Silicone Render, and Nano Drex Silicone Render — used as the weather-resistant top coat in EWI and render-only systems. Available in 50+ colours with multiple texture options.
• Monocouche Render Through-coloured monocouche scratch render applied in a single layer and then scratched to reveal the aggregate texture. Available in multiple colours including Bright White, Buttermilk, Cashew, Cornflower, Cotton White, Devon Cream, Jubilee, Latte, Marshmallow, Oat, Portobello, Pebble, Salmon, Terracotta, and Thyme.
• Mosaic Render Decorative mosaic render finish available in White, Grey, and Black colour options for distinctive aesthetic applications on EWI and render-only projects.
• Resin Bound Mosaic Render Resin-bound mosaic render finish with colours including Pearl, Salt, Glacier, Pewter, Ecru, Oyster, Shore, Cove, Flaxseed, Taupe, Sable, and Magnetite, providing decorative aggregate effects.
• Basecoats & Adhesives Product range including EWI-220 EPS Basecoat, EWI-221 Winter/Rapid Set Adhesive, EWI-222P Performance Basecoat, EWI-225 Premium Basecoat, EWI-226 Aquabase, EWI-240 EPS Adhesive, EWI-260 Levelling Mortar, EWI-269 Lightweight Basecoat, EWI-212 High Polymer Render Coat, and EWI-065 One Coat Dash Cover — used to bond insulation boards and prepare surfaces for render finishes.
• Primers Product range including EWI-301 Water-Based Substrate Primer, EWI-302 Deep Penetrating Primer, EWI-310 Universal Primer, EWI-330 Mineral/Acrylic Primer, and EWI-333 Top Coat Primer — used to prepare substrate surfaces and improve adhesion of subsequent layers.
• Paints Product range including EWI-005 Silicone Paint and EWI-006 Premium Bio Silicone Paint, used as topcoat finishes and tintable in the same colours as the render range.
• Fibreglass Mesh 165g/m² Orange Fibreglass Mesh reinforcement embedded in the basecoat layer to provide tensile strength and crack resistance across EWI systems.
• Lime Range (Heritage Products) Breathable lime-based heritage building products including EWI-705 Lime Paint, EWI-707 Lime Wash, EWI-745 Insulating Cork Render, EWI-747 Lime Render NHL 3.5, EWI-747F Fine Finish Lime Render NHL 3.5, EWI-748 Lime Basecoat NHL 5, and EWI-749 Fine Finish Lime Plaster — designed for historic and traditional buildings requiring moisture-permeable finishes.
• Internal Range Internal wall insulation and finishing products including EWI-749 Fine Finish Lime Plaster, designed for use on the interior side of walls where external insulation is not feasible.
• Building Materials Supporting building products including PRO-533 Tanking Membrane, EWI-020 Render Accelerator, EWI-087 Render Shield, EWI-250 Self-Levelling Compound, and Pro Clean Render Remover.
• EPS Insulation System Expanded Polystyrene (EPS) insulation-based EWI system — the most popular and cost-effective option, easy to install and suitable for various property types across residential, commercial, and social housing applications.
• Mineral Wool Insulation System Mineral wool insulation-based EWI system offering superior fire resistance, breathability, and acoustic insulation, suitable for projects requiring comprehensive performance across fire, thermal, and acoustic criteria.
• Kingspan K5 Insulation System Premium phenolic insulation board system for external wall insulation, part of the EWI Pro space-saving system, offering high thermal efficiency where insulation thickness is limited.
• Render-only System Thin coat render systems applied directly over existing substrates without insulation — versatile solutions for various substrates including brick, block, carrier board, and lime systems, suitable for refurbishment projects where insulation is not required.
• DuraShield Pro (DSP) Next-generation premium EWI system launched in 2024, offering up to 60-year warranty, triple the compressive strength of conventional systems when reinforced with secondary mesh, Ofgem Innovation Link accreditation qualifying for the maximum 45% funding uplift under ECO4. Features enhanced flexural strength additives and refined chemical composition of basecoats.
• Sample Products Sample offerings including EWI Sample Boxes (showing full system build-up), Render Colour Chart Booklet, Colour Chart Fan, Coloured Render Sample Pots (600g, 1.5mm grain), Render Colour Sample Sleeves, and Monocouche Render Colour Samples, designed to help specifiers and homeowners decide on render colour or EWI system.
• Training Academy State-of-the-art training service with facilities in Aylesbury, Birmingham, and Bradford, offering theoretical and practical training in EWI and render installation. Courses include Introduction to EWI, Render-only Systems, Spray Machine Training, On-Site Training, Product Familiarisation, Advanced Rendering Techniques, and PAS2035 Training, priced at approximately £180 + VAT per person per day.
• Specifications & Technical Documentation Site-specific technical specification service covering thermal bridging, ventilation, air tightness, pressure, heat, and moisture conditions. Includes U-value calculations, WUFI analysis, Psi values, and wind-load testing. Free of charge and applicable to projects from small garden offices to multi-storey residential properties.
• 3D Modelling & Detailing Technical drawing and 3D modelling service using Autodesk Revit, producing isometric drawings, orthographic projections, structural drawings, and CAD drawings to support EWI specifications for any property type. Delivered by an in-house architectural technology team.
• Funding Guidance Advisory service for accessing government grants and funding including ECO4, SHDF, HUG, Great British Insulation Scheme, and DuraShield Pro (DSP). Includes a digital eligibility calculator developed in partnership with Insulation Grant Funding.
• On-Site Support Technical team site visit service including pull-out testing, thermal imaging, on-site training, surveys, audits, and general technical guidance throughout project timelines for installers and social housing providers.

Quantifiable outcome

• Up to 35% reduction in heat loss through correctly specified EWI systems
• +4 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Exeter CollegecoreStrategic or Co-development PartnerEWI Pro partners with Exeter College as an approved delivery partner under the UK Government's Warm Homes Skills Programme (WHSP). The partnership delivers up to 50 fully funded NVQ Level 3 Experienced Worker Practical Assessments (EWPA) for External Wall Insulation installers. EWI Pro also collaborated with Exeter College on the New Build Wing project that won Regional New Build Project of the Year at the Energy Efficiency Awards 2024 South West. Training is delivered through a combination of face-to-face and online learning under Work Package 2 of the WHSP, focused on fabric insulation and EWI.
• Insulation Grant FundingminorGTM or Marketing PartnerEWI Pro has collaborated with Insulation Grant Funding to create a digital resource and funding eligibility calculator to help homeowners determine their eligibility for the Great British Insulation Scheme and other government grants. This addresses the complexity and under-utilisation of available insulation funding schemes.
• Travis PerkinscoreChannel Partner/ Reseller/ DistributorTravis Perkins is a national distributor of EWI Pro materials, with an established stockist relationship at their Great Yarmouth branch (Boundary Rd). The partnership extends EWI Pro's reach to trade customers nationwide through Travis Perkins' extensive branch network.
• Switch2ZerominorStrategic or Co-development PartnerThrough partnership with Switch2Zero, EWI Pro actively supports community initiatives including renewable energy solutions, plastic waste reduction, and large-scale tree planting efforts. The partnership contributes to EWI Pro's sustainability roadmap and staff carbon footprint reduction programmes.
• Royal British LegionminorOthersIn 2023, EWI Pro initiated a charity partnership with the Royal British Legion (RBL), a British charity providing financial, social, and emotional support to members and veterans of the British Armed Forces, their families, and dependents. Founded in 1921, RBL is prominent through its Poppy Appeal and national remembrance services. EWI Pro is committed to fundraising activities for RBL.
• PAS 2035 / PAS 2030 Framework PartnerscoreChannel Partner/ Reseller/ DistributorEWI Pro supports installers and housing providers operating under the PAS 2035/PAS 2030 retrofit standards framework through training (PAS Training Course), technical specification services, and system certifications. This positions EWI Pro as the preferred system provider for government-funded retrofit programmes that mandate PAS 2035 compliance.

Scale indicators7 records

Recent moves9 records

Expansion highlights7 records

Direct peers

• PermaRock Products Ltd: PermaRock is a UK EWI system designer and manufacturer offering comparable external insulation systems for social housing, new build and residential retrofit. It holds BBA certifications and competes with EWI Pro in funded retrofit programmes and directly with homeowners, operating with similar scale and market positioning.
• Sto SE & Co. KGaA: Sto is a German-headquartered specialist in external wall insulation systems and render finishes with a major UK presence. It offers directly comparable EWI systems (StoTherm) including EPS, mineral wool and phenolic insulation options, plus silicone and acrylic renders — making it one of EWI Pro's closest direct competitors in the UK EWI market.
• Wetherby Building Systems: Wetherby Building Systems is a UK-based specialist EWI and render manufacturer of comparable size to EWI Pro, also operating since the early 2010s. It offers competing EWI systems (Stylite, Mineral Wool, phenolic) plus render finishes, and competes directly for social housing and homeowner retrofit contracts with a similar independent business model.
• Alsecco (DAW Group): Alsecco is part of the DAW Group and a specialist EWI and render system manufacturer with a UK presence, offering comparable external wall insulation systems and silicone/silicone-silicate renders. It competes directly with EWI Pro in the UK social housing and new build retrofit segments with similar specification-driven sales approach.

Regional players

• Baumit GmbH: Baumit is a European (Austrian-headquartered) manufacturer of EWI systems, renders and façade products with limited direct UK market presence. It offers highly comparable complete EWI build-ups (EPS, mineral wool, wood fibre) and is a direct product competitor for technical specification but primarily serves Central European markets rather than competing with EWI Pro in the UK.
• ISOCELL Group (including Best Wood Schneider): ISOCELL is a European manufacturer of wood-fibre and cellulose insulation systems with a growing UK presence in natural/breathable EWI systems. It is a partial competitor in the heritage/breathable EWI segment where EWI Pro's Lime Heritage Range competes, though primarily serving DACH region markets rather than competing directly in the UK.

Broad incumbents

• Knauf Insulation: Knauf is a major global insulation and dry-lining manufacturer whose Aquapanel cement board is referenced in EWI Pro's BBA certification (22/6324). It offers its own EWI systems via Knauf External Wall Insulation and competes broadly in the EWI market, including via partnerships that bundle insulation boards with render systems similar to EWI Pro's offering.
• Saint-Gobain Weber: Saint-Gobain Weber is one of the largest EWI and render system manufacturers in the UK and Europe, offering complete EWI build-ups across multiple insulation types. As a division of Saint-Gobain, it competes directly with EWI Pro across all customer segments and is the dominant player in social housing and new build retrofit.
• Rockwool Ltd: Rockwool is a global mineral wool insulation manufacturer whose stone wool insulation boards are a key component in EWI Pro's mineral wool EWI system. It is a partial competitor and partial supplier, as Rockwool-branded EWI systems compete in the UK while its insulation products feed into third-party systems including EWI Pro's.

Others

• Kingspan Insulation: Kingspan supplies the K5 phenolic insulation board used in EWI Pro's premium K5 system build-up. While not a direct EWI system competitor in the same way, Kingspan is a partial supplier to EWI Pro and also offers its own façade systems, positioning it as both a partner and adjacent competitor in the high-performance insulation segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@EWIPro/videos
• Xx.com/EWI_Pro
• Facebookfacebook.com/EWIProOfficial
• LinkedInlinkedin.com/company/ewipro

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 EWI Pro