Door-Stop International

What Door-Stop International does

Door-Stop International (trading brand of Premdor Crosby Limited, company number 03227274) is a UK-based manufacturer of GRP (Glass Reinforced Plastic) composite exterior doors and doorsets, founded in 2008 and headquartered in Huthwaite, Nottinghamshire. The company operates as part of the Owens Corning Door Division UK&I following a 2025 partnership, and manufactures from a single UK facility (with a registered office in South Yorkshire). Its product portfolio consists of standard composite doors organised into four collections (Classic, Cottage, Modern, FABFIVE) plus FD30 fire-rated composite doorsets, supported by hardware from third-party suppliers (Ultion, Yale, ABS) and profile systems from Veka UK Group.

Revenue is generated through trade-only direct sales of doorsets to installers, contractors, and developers, with pricing starting at £415 for standard composite doors. Customers open a trade account (under three minutes) and order through the DoorVault online portal, which is paired with a web-based door configurator that handles up to 940 billion design combinations and calculates certified thermal performance. Distribution is exclusively UK-domestic with free nationwide delivery via XPO logistics, 5-day standard lead times, and a 10-day lead time for configurable fire doorsets. The FABFIVE sub-brand carries a 'If it's late, it's free' guarantee for 5-day delivery.

Door-Stop's operating model is differentiated by regulatory certifications (Certifire CF 5906, CF 5863, Certisecure CS 5112, ISO 9001:2015), a patented reglazeable cassette system, and trade-channel tooling including the Sales Manager platform, a homeowner-facing lead-generation website (door-stop-doors.co.uk), and the KeyPoints loyalty programme. The company serves UK and Ireland residential new-build, refurbishment, and commercial installation markets with a 251-500 employee base.

Name

Door-Stop International

Legal name

Premdor Crosby Limited

Website

https://door-stop.co.uk

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

251–500 employees

Short description

Door-Stop International is a UK-based manufacturer of GRP composite exterior doors and FD30 fire doorsets, supplying exclusively through trade accounts to installers, contractors, and developers across the UK and Ireland with online ordering and 5-day nationwide delivery.

Ownership category

akta.pro rank

Product category

Composite Exterior Doors

NAICS

Wood Window and Door Manufacturing (321911)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Exterior Doors (IMADAIAA)

akta.pro secondary industries

Commercial & Industrial Doors (Sectional, High-Speed, Fire, Security) (IMADAIAF), Architectural Hardware & Door Controls (Hinges, Locks, Closers, Panic Devices) (IMADAIAI)

Keywords

• Composite doors
• Fire doorsets
• Exterior doors
• Trade door supply
• Door hardware

Headquarters

HQ city

Huthwaite

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, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Composite Door Sales: Door-Stop generates revenue primarily through the sale of GRP composite doors to trade customers. Products include standard composite doors, fire doors (FD30 certified), and the FABFIVE quick-delivery range. Doors are priced from £415 for standard composite doors with competitive trade pricing and no hidden extras.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Door-Stop International is the UK's largest pre-hanger and trade-only distributor of GRP (Glass Reinforced Plastic) composite exterior residential doors and doorsets. The company manufactures and supplies composite doors across four collections (Classic, Cottage, Modern, FABFIVE) plus FD30 fire-rated doorsets, selling exclusively to installers, contractors, and developers via the DoorVault online portal. Products are priced from £415 with free nationwide delivery and lead times as short as 5 days.

Product overview

Door-Stop International is a UK-based manufacturer of GRP composite doors founded in 2008, operating as part of the Owens Corning Door Division UK&I. The company supplies trade customers exclusively with composite doors (standard and fire-rated) and related hardware. The product portfolio consists of GRP Composite Doors organized into four collections (Classic, Cottage, Modern, FABFIVE), plus FD30 Fire Doors. Supporting services include Sales Manager (trade sales and lead management tool), KeyPoints loyalty programme, DoorVault online ordering platform, and XPO-powered delivery tracking. The company is ISO 9001:2015 certified and manufactures in the UK with 5-day standard and 10-day fire door lead times.

Differentiator

Problem solved

Functional benefit

Brands

• FABFIVE Collection: An all-in-one doorset solution offering 5-day delivery, five door styles, five colours, and five glazing options, with a money-back guarantee if delivery is late.
• Classic Collection
• Cottage Collection
• Modern Collection

Products and services

• GRP Composite Doors Glass Reinforced Plastic (GRP) composite doors featuring durable GRP skin resistant to weather, warping, and impact, with a strong insulated core for thermal performance. Sold exclusively to trade installers, contractors, and developers for new builds, refurbishment projects, and residential installations.
• Classic Collection Timeless, classic door designs with well-balanced aesthetics suitable for a wide range of property types, offering reliability and broad appeal. Includes 15 door styles.
• Cottage Collection Characterful door designs with grooved panels and decorative glazing for period properties and character-led projects. Offers 43 door styles with options for traditional appearance.
• Modern Collection Contemporary door designs featuring clean lines, ladder-style slab design, and confident glazing options (Tahoe, Kensington, Aurora). Features sleek glazing cassette with subtle grain texture and statement bar handles or handleless design. Includes 8 door styles.
• FABFIVE Collection All-in-one doorset solution featuring a 5-day delivery guarantee. Includes 5 door styles (2 Panel 2 Square, 2 Panel 1 Square, Cottage 1 Square, 4 Panel Sunburst, 6 Panel), 5 colors (Black, Anthracite Grey, White, Blue, Chartwell Green), and 5 glazing options (Clear, Stippolyte, Satin, Cotswold, Minster). Comes with SFS Dynamic 2D-C Hinge standard and an 'If it's late, it's free' guarantee.
• FD30 Composite Fire Doors Fire-rated composite doorsets certified to FD30 standard, featuring a timber hybrid design with solid timber core and GRP skins. Dual certified for fire (Certifire CF 5906, CF 5863) and security (Certisecure CS 5112). 10-day lead time. Includes 10 door styles.
• Door Hardware Premium door hardware components including hinges (SFS Dynamic 2D-C with anti-drop technology), locks, cylinders (Ultion WXM, Yale, ABS), handles, letterplates, and door furniture. Engineered for reliable performance and consistent fit.
• Sales Manager Trade sales management platform combining door designer, order processor, lead generator, and quote generator. Supports branding customization, custom pricing, back-to-back ordering with Door-Stop, live link with product updates, and receives leads from the consumer website (Door-Stop-Doors.co.uk).
• KeyPoints Loyalty Programme Trade rewards programme where installers earn points automatically with every door order. Points can be redeemed against practical sales tools. New members receive 250 KeyPoints on sign-up.
• Online Door Configurator Web-based door design tool allowing customers to configure 940 billion door combinations. Calculates and certifies the thermal performance of every door configuration. Allows 1-minute configuration of any door. Accessible via website, showroom displays, or mobile/tablet.
• Delivery Tracking Service (XPO-powered) Real-time delivery tracking system powered by XPO logistics. Provides automated text and email notifications on delivery day with expected times, live tracking progress, delay alerts if delivery changes by more than 30 minutes, and proof of delivery documentation.

Quantifiable outcome

• Door lifespan of 35 years, the longest among door types tested
• +3 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• Owens Corning Door Division UK&IcoreStrategic or Co-development PartnerDoor-Stop is a trading partner of the Owens Corning Door Division UK&I. This partnership provides Door-Stop with the backing and resources of a global building products manufacturer while maintaining their specialist focus on composite doors.
• Veka UK GroupcoreTechnology or IntegrationDoor-Stop partnered with Veka UK Group to offer VEKA chamfered and sculptured door frame profiles. Veka has been designing and supplying profiles for over 50 years, providing Door-Stop customers with proven, industry-leading profile options.
• Ultion, Yale, and ABScoreTechnology or IntegrationMarket-leading cylinder and locking systems from Ultion (WXM), Yale, and ABS are used in Door-Stop composite doors, providing enhanced security with police-approved snap-secure solutions and 3-star performance ratings.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Solidor: Solidor is a UK-based composite door manufacturer selling through trade customers with a comparable product range (GRP composite entrance doors) and overlapping installer and developer customer base. It is the closest direct competitor to Door-Stop in the UK composite exterior door market.
• Distinction Doors: Distinction Doors is a UK composite door supplier focused on trade and new build customers, distributing a comparable GRP composite door range. Its trade-channel focus and product positioning make it a direct peer to Door-Stop in the same composite exterior door niche.
• Endurance Doors: Endurance Doors manufactures composite entrance doors for the UK trade market, offering a similar range of styles, colours, and trade-focused distribution. It competes head-to-head with Door-Stop for installer and developer accounts in the composite exterior door category.
• Rockdoor: Rockdoor is a UK manufacturer of composite and high-security entrance doors selling primarily through installer networks. It overlaps with Door-Stop on trade distribution, composite construction, and security/fire performance positioning for residential entrance doors.
• Hurst Doors: Hurst Doors supplies composite, uPVC, and timber entrance doors to UK trade and new build customers with a similar trade-channel model. It is a comparable peer through overlapping product breadth (composite focus) and customer base (installers and developers).

Others

• Ultion (Brisant-Secure): Ultion is a UK lock cylinder brand that supplies 3-star snap-secure locking systems used by Door-Stop and other composite door manufacturers. As a component partner and adjacent security hardware supplier, it is thematically related but does not directly compete with Door-Stop's door manufacturing business.
• Veka UK Group: Veka UK Group designs and supplies PVC-U profile systems for windows and doors and is a strategic partner of Door-Stop, providing door frame profiles. It is an upstream enabler rather than direct competitor, but its profile technology shapes the broader UK door market alongside Door-Stop's products.

Broad incumbents

• JELD-WEN: JELD-WEN is a global door and window manufacturer with a broad portfolio including composite, timber, and uPVC interior and exterior doors. It is a broader incumbent that overlaps with Door-Stop in the UK residential entrance door category but serves a much wider set of customers and product lines.
• Masonite: Masonite is a large global door manufacturer with residential and commercial door portfolios, including composite and moulded door offerings. As a broad incumbent it competes with Door-Stop at the category level but does not focus exclusively on UK trade composite exterior doorsets.
• Premdor: Premdor is a UK door manufacturer (and the namesake of Door-Stop's legal entity Premdor Crosby Limited) producing internal, external, fire, and garage doors. It overlaps with Door-Stop on exterior and fire door manufacturing for the UK trade market, with a broader product portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Doorstopdoors
• LinkedInlinkedin.com/company/door-stop-international
• Instagraminstagram.com/doorstopdoors
• Xx.com/doorstopdoors

Compliance5 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 Door-Stop International