What Clayton Glass does

Clayton Glass is a UK-based manufacturer of Insulating Glass Units (IGUs) and specialist glazing products, founded in 1956 and headquartered in Stanley, County Durham. The company operates six manufacturing sites across the UK — North East, Nottingham/Sutton-in-Ashfield, Blackburn, Scotland (Bellshill), Canterbury, and Swindon/Dewsbury — producing approximately 65,000 units per week with 600+ employees. Its product portfolio spans standard double- and triple-glazed IGUs, SMARTGLASS roof glass with anti-glare/self-cleaning/temperature-regulating properties, EcoMAX sustainable glass made from recycled materials, decorative and leaded glass, composite door glass (where it claims UK leadership), acoustic laminate solutions, and Triple28, a triple-glazed unit fitting standard 28mm profiles with a U-value of 0.8. Underlying technology spans insulating glass unit manufacturing processes, toughening (five toughening plants), suspended Monolithic Glass Core architecture for Triple28, and proprietary online tooling via the GlassTrack order-tracking portal.

The business operates as a B2B manufacturer-distributor, selling through area and regional sales managers to UK glazing installers, fitting businesses, and composite door manufacturers. Revenue derives from one-time product sales on a quote-based B2B model, supplemented by a 12p/Kg commodity surcharge mechanism introduced in 2026 to manage raw material cost volatility. Distribution runs through a direct sales force, customer service teams at each site, and the GlassTrack self-serve portal for existing B2B customers. The company is privately held, owner-managed by Ryan Green (who acquired it in 2005), with Mark Hibbert as Managing Director since May 2022. Clayton Glass is a founding member of the National Glass Group buying consortium and holds ISO 9001:2015, EN 1279, EN 12150, and Glass & Glazing Federation certifications across all six sites.

Name

Clayton Glass

Legal name

Clayton Glass Ltd

Website

https://claytonglass.co.uk

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

251–500 employees

Short description

Clayton Glass is a UK-based B2B manufacturer of insulating glass units and specialist glazing products, operating six manufacturing sites and producing ~65,000 units weekly for installation businesses and composite door manufacturers across the UK.

Ownership category

akta.pro rank

Product category

Insulating Glass Unit Manufacturing

NAICS

Glass Product Manufacturing Made of Purchased Glass (327215), Glass and Glass Product Manufacturing (32721)

SIC

Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Insulating Glass Units (IGUs) & Double/Triple Glazing (IMADAHAC)

akta.pro secondary industry

Glass Fabrication & Processing Services (Cutting/Edging/Drilling/Polishing) (IMADAHAI)

Keywords

• Insulated glass units
• Composite door glass
• Decorative glazing products
• Triple glazed units
• Roof glass manufacturing

Headquarters

HQ city

Annfield Plain

HQ country

United Kingdom

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. IGU and Glass Unit Sales: Primary revenue from manufacturing and selling insulating glass units (IGUs), including standard units, roof glass, decorative glass, composite door glass, and specialist products. Sales are B2B focused on installation and fitting businesses.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Clayton Glass manufactures and supplies insulating glass units (IGUs) and specialist glazing products to UK installation, fitting businesses, conservatory fabricators and door manufacturers. Core products span standard IGUs, SMARTGLASS roof glass, EcoMAX sustainable glass, decorative glass, composite door glass, acoustic laminate solutions, and Triple28 triple-glazed units, delivered from six UK manufacturing sites with weekly capacity of around 65,000 units.

Product overview

Clayton Glass is a UK-based manufacturer of insulating glass units (IGUs) and specialist glazing products. The company operates six manufacturing sites and offers a comprehensive product portfolio including Standard Units (IGUs), SMARTGLASS® (roof glass with intelligent features), EcoMAX Glass (eco-friendly sustainable windows), Decorative Glass (patterned and leaded options), Composite Door Glass (UK's largest supplier), Specialist Products (acoustic laminate solutions), and Triple28 (innovative triple glazing for standard profiles). The products range from standard double-glazed units to advanced high-performance roof glass with self-cleaning, soundproofing, and temperature-regulating capabilities. Clayton Glass positions itself as both a high-volume manufacturer (65,000 units per week capacity) and a provider of bespoke, customisable solutions for windows, doors, conservatories, and architectural applications.

Differentiator

Problem solved

Functional benefit

Brands

• SMARTGLASS: Roof glass product line with intelligent features including anti-glare, self-cleaning, soundproofing, and temperature-regulating properties. Available in multiple tints (Blue, Aqua, Bronze, Neutral) and variants (Standard, Plus+, Ultimate, Ultra 86).
• EcoMAX Glass
• Triple28
• GlassTrack

Products and services

• Standard Insulating Glass Units Standard double-glazed sealed units manufactured for window, door and conservatory installation businesses across the UK, with sizing, specification and options defined per order.
• SMARTGLASS Proprietary roof glass range combining anti-glare, self-cleaning and heat-reflective performance, supplied for conservatory and glazed roof installations.
• EcoMAX Glass Sustainable IGU range using a recycled-content glass base and a near-100% biodegradable TPS spacer system, achieving an A energy rating.
• Decorative Glass Range of decorative glazing products with patterns and designs for windows and doors, supplied to installers and fabricators.
• Composite Door Glass Bespoke and standard glass units designed, tested and supplied as drop-in glazing cassettes for composite door manufacturers and fabricators.
• Acoustic Laminate Solutions Acoustic laminated glass solutions designed to reduce noise transmission, supplied as part of the specialist products range for installers and fabricators.
• Triple28 Triple-Glazed Units Proprietary triple-glazed units that fit standard 28mm profiles, delivering triple-glazing thermal performance without changing existing window or door system sizing.
• GlassTrack Online Portal Online portal that allows trade customers to place orders, track order progress and download technical and marketing collateral for Clayton Glass products.

Quantifiable outcome

• Triple28 delivers up to 90% greater thermal efficiency compared to standard double glazing, with U-value of 0.8
• +3 more outcomes

Named customers2 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

Feature5 records

Partnerships

Three partnerships are on record, tiered minor and core.

• CR SmithminorStrategic or Co-development Partner · 2 February 2026Clayton Glass partnered with Scottish home improvements specialist CR Smith to produce a bespoke decorative stained-glass window for a customer's home in Paisley. The 600mm x 1910mm window featured a vibrant scene with personal symbolism designed collaboratively between CR Smith and its customer.
• National Glass Group (NGG)coreStrategic or Co-development PartnerClayton Glass is a founding member of the National Glass Group, the UK's largest buyer representing leading independent glass processors and manufacturers. Members share the same ethos, meet strict criteria, and hold appropriate accreditations. The group provides unrivalled buying power and the broadest product range available.
• Mossy EarthminorStrategic or Co-development PartnerClayton Glass partners with environmental organization Mossy Earth for their EcoMAX Glass sustainability initiative. For every EcoMAX installation, trees are planted in partnership with Mossy Earth, with thousands of saplings planted to date.

Scale indicators6 records

Recent moves12 records

Expansion highlights6 records

Others

• Bohle: Bohle is a global supplier of glass hardware, tools, and consumables serving fenestration and glass-processing customers. It is an adjacent ecosystem supplier rather than a direct IGU competitor, but it shares the same installer and processor customer base as Clayton Glass.
• Thermoseal Group: Thermoseal Group supplies insulated glass components including warm-edge spacers, desiccants, and sealants to IGU manufacturers in the UK and globally. It is an upstream supplier to Clayton Glass's IGU manufacturing operations and an enabler of EN 1279-compliant sealed units.
• Edgetech (Quanex): Edgetech, part of Quanex, manufactures warm-edge spacer systems used inside IGUs. It is a key supplier ecosystem player for Clayton Glass's high-performance IGU products (including Triple28) and a critical enabler of energy-efficient sealed units across the UK fenestration market.

Broad incumbents

• Pilkington UK (NSG Group): Pilkington is the UK's flagship float-glass manufacturer and a key raw-glass supplier to Clayton Glass. Its downstream processed glass and IGU offering overlaps with Clayton's portfolio, making it both a supplier and a competitor in the UK glazing value chain.
• Guardian Glass: Guardian Glass is a major global float-glass manufacturer with a UK presence, supplying high-performance coated glass for architectural and IGU applications. It competes directly with Clayton Glass's SMARTGLASS, EcoMAX, and high-performance IGU lines.
• Saint-Gobain Glassolutions: Saint-Gobain Glassolutions is the UK processing arm of Saint-Gobain, supplying IGUs and processed glass to installers and contractors. It is a broader incumbent with significantly larger parent resources, vertically integrated float-glass supply, and an overlapping IGU product range.

Direct peers

• Distinction Glass: Distinction Glass is a UK-based decorative glass manufacturer supplying patterned, coloured, and leaded glass to door and window manufacturers. It directly competes with Clayton Glass's composite door glass offering on design-led, niche decorative glass products.
• Sutton Glass: Sutton Glass is a UK IGU manufacturer producing sealed units for residential and commercial applications. It is a smaller direct competitor in the standard IGU segment where Clayton Glass holds scale advantages, but competes for the same installer customer base.
• RegaLead: RegaLead is a UK specialist in decorative leaded and resin bevel glass for the door and window industry. It overlaps directly with Clayton Glass's composite door glass and decorative glass product lines, serving the same door-manufacturer customer base.
• Cornwall Glass: Cornwall Glass is a UK glass processor and IGU manufacturer serving installers, trade, and architectural customers. It is a comparable regional IGU competitor with overlap in standard units, decorative glass, and processed products supplied to similar B2B channels.

Market position

Strengths1 record

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ClaytonGlass
• Facebookfacebook.com/claytonglassigu
• LinkedInuk.linkedin.com/company/clayton-glass-limited

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Clayton Glass