Selo Doorsets

What Selo Doorsets does

Selo Doorsets is a UK-based manufacturer of fire-rated doorsets, access panels, smoke control dampers, and temporary fire doors, operating under its registered legal name Linear Building Innovations Ltd from Milton Keynes. The company serves architects, contractors, and property developers in the UK construction market—primarily high-rise residential and commercial projects—with a focus on compliance under the Building Safety Act, Gateway 2 approvals, and EN fire testing standards. Its multi-brand portfolio (Quadra+, Rida, Ligna, Una, Innova+, Arriva, Via, FumaCE, Tempus) is extended by wholly-owned sub-brands Enigma (sliding pocket doors), Modulo (modular timber doorsets), and Tempus (temporary fire doors for construction sites).

The technical core is concealed-frame and riser door design with fire ratings up to E120, anchored by Quench—a patent-pending factory-fitted intumescent fire-stopping system that eliminates on-site mastic application. All products are bi-directionally fire tested at UKAS-accredited laboratories, and the company holds third-party certifications including Certifire, Certisecure, PAS 24, Secure by Design, ISO 9001, ISO 14001, BWF, DHF, FPA, and Made in Britain.

The business model is sales-led and quotation-based with no public e-commerce. Selo engages specifiers during RIBA stages 2-5 via dedicated Specification Support advisors, CPD training (100+ sessions delivered in 2023), breakfast-morning workshops, and Selo Academy training programs. Distribution is exclusively direct in the UK, with a Selo London Hub at the Building Centre, Bloomsbury. Revenue streams consist of one-time doorset sales plus a recurring rental/hire layer from the Tempus temporary door line, contracted on a multi-year bespoke basis. The company has completed more than 8,000 projects, operates with 51-100 employees, and has no external institutional investment disclosed.

Name

Selo Doorsets

Legal name

Linear Building Innovations Ltd

Website

https://selo.global

Company type

Private

Operating status

Operating

Headcount range

51–100 employees

Short description

Selo Doorsets is a UK manufacturer of fire-rated doorsets, access panels, smoke control dampers, and temporary fire doors serving architects, contractors, and property developers through a specification-led direct sales model and bespoke quotation-based pricing.

Ownership category

akta.pro rank

Product category

Fire-rated Doorsets

NAICS

Metal Window and Door Manufacturing (332321), Wood Window and Door Manufacturing (321911)

SIC

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

akta.pro primary industry

Commercial & Industrial Doors (Sectional, High-Speed, Fire, Security) (IMADAIAF)

akta.pro secondary industries

Interior Doors (IMADAIAB), Firestop & Penetration Sealing Materials (IMADAGAL)

Keywords

• Fire-rated doorsets
• Riser door manufacturing
• Concealed frame doors
• Access panels
• Smoke control dampers

Headquarters

HQ city

Milton Keynes

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fire-Rated Doorset Sales: Primary revenue stream from sale of fire-rated riser doors, concealed frame doors, access panels, and smoke control dampers. Products include metal riser doors (Quadra+, Rida), timber doors (Una), concealed frame doors (Innova+, Arriva), modular timber doorsets (Modulo), and access panels (Via).
2. Temporary Door Hire: Hire services for temporary fire doors (Tempus) during construction phase. Allows contractors to protect final riser doors during construction with reusable temporary doors, then swap to finished doors at practical completion.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels12 records

Core offering

Selo Doorsets manufactures fire-rated riser doors, concealed frame doorsets, access panels, smoke control dampers, and temporary fire doors for the UK construction industry. The company supplies products directly to architects, contractors, and developers with specification support from RIBA stages 2-5, helping projects meet Building Safety Act and Gateway 2 compliance. Key product lines include Quadra+, Rida, Ligna, Una, Innova+, Arriva, Modulo, Via, FumaCE, and Tempus, with the proprietary Quench factory-fitted fire-stopping system as a differentiator.

Product overview

Selo Doorsets is a UK-based manufacturer specializing in fire-rated doorsets and access solutions for the construction industry. The product portfolio centers on concealed riser doors (Quadra+, Rida, Ligna, Una), access panels (Via), smoke control systems (FumaCE), and temporary fire doors (Tempus, Quadra+ Temporary). Key differentiators include factory-fitted fire-stopping (Quench), bi-directional fire testing, and compliance with EN standards (EN81-20/50 for lift shafts). The company operates sister brands Enigma (pocket doors) and Modulo (timber doorsets), offering specification support and CPD training through Selo Academy.

Differentiator

Problem solved

Functional benefit

Brands

• Quadra+: High performance metal riser doors
• Enigma
• Modulo
• Tempus
• Via
• Rida
• Ligna
• Una
• Innova+
• Arriva
• FumaCE
• Quench
• Halo Assist

Products and services

• Quadra+ High Performance Riser Doors High-performance metal riser doors with concealed frame design, bi-directionally fire tested, offering E60-E120 fire ratings for fire-rated service access in UK building projects.
• Quadra+ Lift Shaft Concealed doors designed to meet EN81-20 and EN81-50 standards for use in lift shafts for emergency escape and access, the first-ever concealed doors meeting these lift shaft standards.
• Rida Metal Riser Doors E30Sa (FD30) cost-effective metal riser doors with 30-minute fire rating. Non-combustible construction prevents warping, delivered as pre-hung and pre-finished steel doorsets.
• Ligna Clad Riser Doors Fire-rated riser door designed for tiled walls that accepts a range of tiles or decorative plaster, creating a flush, sleek finish for aesthetic integration.
• Una Timber Riser Doors Timber riser doors with concealed metal frame, fire rated up to E60, made to custom sizes with door hardware to suit individual project schemes.
• Via Access Panels Versatile access panels providing concealed solution for lockable service cupboards, fire rated up to E120 and acoustically rated up to 41dB.
• FumaCE Concealed Smoke Control Damper CE certified concealed smoke control damper, fully concealed for minimalist aesthetics. Fire-rated to E120 and tested to 10,000 cycles for durability.
• Tempus Temporary Fire Doors Reusable temporary fire doors constructed from heavy-duty steel with mineral wool core, E60 fire-rated, designed to withstand construction site use and protect final doors during construction phases.
• Tempus Lift Shaft Reusable lift shaft fire doors tested to EN1634, providing 60-minute (FD60) fire resistance in both directions with smoke sealing.
• Quadra+ Temporary Doors Temporary riser doors for construction sites to replace timber riser doors during build phase, protecting final doors from damage until practical completion.
• Innova+ Frameless Pivot Doors Concealed frameless timber doors with pivot hinges creating hidden door features for modern interior design statements.
• Arriva Concealed Flush Frame Doors Outward-opening hinged doors with concealed flush frame for minimalist, high-end interior design aesthetics.
• Modulo Modular Timber Doorsets Innovative, adaptable internal timber doorsets designed for quick specification and simple installation with adjustable fitting.
• Enigma Pocket Doors Sliding pocket doors that maximise space and enhance interiors, sister company brand managed through separate website.

Quantifiable outcome

• 8,000+ successful projects completed
• +3 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• KnaufcoreStrategic or Co-development Partner · 14 July 2022Joint seminar partnership with leading building materials company Knauf to deliver fire safety seminar on fire door and wall system specification. Seminar held at Building Centre, London on 14 July 2022. Combined technical presentations from both Selo and Knauf technical teams covering door testing, wall construction requirements, and Building Safety Bill implications.
• FIS (Finishing and Interiors Specification)coreStrategic or Co-development Partner · 1 January 2022Joint seminar partnership with FIS and Knauf for 'Getting It Right' Doors and Walls as a system seminar. FIS Technical Director Joe Cilia presented on fire door testing and good practice. Partnership aimed at educating the industry regarding doors and walls as a system, especially in relation to fire safety following the Grenfell disaster and new Building Safety Act.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Allegion: Allegion is a global provider of security and access solutions (with UK brands including Briton, LCN, and Von Duprin) that increasingly offers fire-rated doorset systems; relevant incumbent that competes with Selo on certified performance and commercial specification channels.
• JELD-WEN UK: JELD-WEN is a global doorset and windowset manufacturer with a substantial UK presence, supplying internal, external, and fire-rated doorsets across residential and commercial projects - a broad incumbent with overlapping fire door capability but a much wider product portfolio than Selo's specialist focus.
• Masonite: Masonite is one of the world's largest door manufacturers, offering architectural and fire-rated doorsets through commercial channels; represents the global-scale incumbent that could enter or expand in concealed and riser door categories.
• ASSA ABLOY UK: ASSA ABLOY is the global leader in door openings and access solutions with UK brands spanning fire doors, ironmongery, and access control; competes with Selo via fire door ranges and could bundle concealed frame doors with hardware/security offerings.

Direct peers

• Distinction Doors: Distinction Doors is the UK's largest supplier of composite fire doors, serving new-build and social housing markets through a fabricator network - a comparable specification-led fire door business targeting high-volume residential schemes.
• Halspan: Halspan is a leading UK manufacturer of fire-rated timber doorsets and door blanks (including Halspan Optima and Prima), supplying the same architect/contractor specification channel as Selo with comparable Certifire-certified fire performance claims.
• Enfield Speciality Doors: Enfield Speciality Doors manufactures fire-rated and acoustic doorsets in the UK for commercial and high-rise residential applications, competing head-to-head with Selo's Quadra+ and Via ranges on certified fire performance and specification support.
• Premdor: Premdor is one of the UK's largest interior and fire door manufacturers, offering timber doorsets across price points to builders' merchants and contractors - directly comparable to Selo's Modulo, Una, and Ligna timber door ranges in customer and channel.

Emerging players

• BoDo (Lakes Showering Spaces): BoDo is a UK-based specialist manufacturer of high-end concealed frame and pocket door systems for premium residential and hotel interiors - directly comparable to Selo's Innova+, Arriva, and Enigma concealed aesthetic door ranges in target market and product approach.
• FSi (Firestopping Solutions Ltd): FSi manufactures firestopping and fire protection products (intumescent sealants, pipe collars, fire batt) directly comparable to Selo's Quench factory-fitted fire-stopping technology; an emerging specialist that competes for the same passive fire protection specification budget.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/selo-uk
• Instagraminstagram.com/selo_concealed_riser_doors
• Pinterestpinterest.co.uk/selosimplicity

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 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 Selo Doorsets