Liniar
- Company typePrivate
- Founded1974
- HeadquartersDenby, United Kingdom
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
Liniar firmographics
Firmographics- Name
- Liniar
- Legal name
- Liniar Limited
- Website
- https://liniar.co.uk
- Company type
- Private
- Founded year
- 1974
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Ownership category
- akta.pro rank
Where Liniar is headquartered
LocationHeadquarters
- HQ city
- Denby
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Liniar business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- uPVC Profile and Building Product Sales: Liniar extrudes PVCu profiles and manufactures finished building products (windows, doors, conservatories, roofs, fencing, decking, piling, cladding, soffits/fascias) and sells them to independent specialist manufacturers and resellers across the UK. Revenue is generated through the sale of profile systems and finished goods to trade customers (fabricators, installers). The company also sells directly to commercial customers and new build developers.
Go-to-market motion2 records
Distribution channels4 records
Marketing channels8 records
Liniar product offering
Product offeringCore offering
Liniar designs, extrudes, and manufactures PVCu (uPVC) profile systems and finished building products at its Derbyshire facility, supplying them through a UK-wide network of Liniar-approved independent fabricators and installers. The portfolio includes windows, residential/patio/bi-fold/composite doors, conservatories, lantern roofs, decking, fencing, composite uPVC piling, cladding, soffits and fascias, and garden rooms, supported by the LiniarConnect trade portal.
Product overview
Liniar is a UK manufacturer of uPVC profile systems producing cutting-edge windows, doors, and outdoor building products. The product portfolio includes multiple window styles (casement, tilt & turn, flush sash, reversible, bi-fold, bow/bay, French) in 70mm and 90mm profile depths, door systems (residential, composite, French, bi-fold, sliding patio) in both uPVC and aluminium, conservatories and lantern roofs, garden rooms (Spaces), outdoor products (decking with Rapt Foiled, Switchboard, Switchboard Ultra, and balustrade systems; fencing in classic, foiled, and composite finishes; piling for retention and flood prevention; soffits and fascias; and shiplap cladding). Key systems include the EnergyPlus multi-chambered profile achieving A++ ratings, the Zero|90 Passivhaus-certified 90mm system, and the Resurgence 80mm double-rebated flush sash system. Products are designed, manufactured, and tested at the Derbyshire facility and distributed through independent specialist manufacturers and resellers across the UK.
Differentiator
Problem solved
Functional benefit
Brands
- Resurgence: 80mm flush sash window and door system featuring double rebate with twin gaskets for weather resistance, thermal efficiency, security, and acoustic performance.
- Elevate
- Zero|90
- EnergyPlus
- SwitchBoard
- SwitchBoard Ultra
- Rapt
- Alumina
Quantifiable outcome
- Zero operational waste to landfill for almost three decades
- +7 more outcomes
Companies that use Liniar
Customer profileNamed customers9 records
Segments5 records
Ideal customer profiles3 records
Liniar technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature12 records
Liniar partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core and notable.
- WhitelinecoreLiniar and Whiteline collaborated to deliver a smarter flush sash sealing solution, announced 1 May 2026. This partnership enhances product performance for flush sash windows through improved sealing technology.
- Jackson WindowscoreJackson Windows partnered with Liniar to support a cottage renovation project. The partnership demonstrates how Liniar supports fabricators in delivering heritage and renovation projects using Liniar profile systems.
- Spire GlassnotableSpire Glass used Liniar systems to deliver contemporary elegance in a sensitive setting for a full house project. Featured as a case study subject, demonstrating the capabilities of Liniar products in challenging architectural contexts.
- RoundbrandcoreRoundbrand is installing Liniar Zero|90 in over 200 homes at Bennerley View, a major sustainable social housing project. This partnership demonstrates Liniar's capability to serve large-scale new build and social housing projects with Passivhaus-certified window systems.
- National TrustnotableThe National Trust uses Liniar composite piling as the engineering solution of choice for land and water retention projects, alongside the Environment Agency, utility companies, landscapers and international engineering firms.
- Environment AgencynotableThe Environment Agency uses Liniar composite piling as the engineering solution of choice for flood prevention barriers and water management projects.
- Passivhaus InstitutenotableThe Passivhaus Institute certified Liniar's Zero|90 uPVC casement and tilt & turn window styles as energy saving components, enabling Passivhaus standard construction.
Scale indicators12 records
Recent moves7 records
Expansion highlights5 records
Liniar competitors and assessment
Company assessmentDirect peers
- Eurocell: UK-based manufacturer and recycler of uPVC window, door, and conservatory profile systems, plus roofline products. Directly comparable to Liniar in core product range, UK market focus, and B2B fabricator-network distribution model.
- VEKA: Global PVC profile systems manufacturer with a major UK operation supplying uPVC profiles to fabricators for windows, doors, and conservatories. Closely comparable in core uPVC extrusion technology and UK fabricator-network channel.
- Rehau: German polymer manufacturer with a substantial UK fenestration business (windows, doors, underfloor heating). Competes directly with Liniar in uPVC and polymer-based building profile systems across overlapping customer segments.
- Profile 22: UK uPVC profile systems manufacturer (part of Epwin Group) supplying windows, doors, and conservatories through a fabricator network. Direct competitor with similar product depth and channel model to Liniar.
- Duraflex: UK-based uPVC profile systems manufacturer serving the trade fabricator market for windows, doors, and conservatory roofs. Directly comparable to Liniar in profile extrusion technology and trade-channel go-to-market.
- Aluplast: German uPVC profile systems manufacturer with significant UK operations, supplying premium window and door profile systems (including Passivhaus-capable products) to UK fabricators. Competes directly with Liniar Zero|90 in the energy-efficiency segment.
- Kömmerling (Profine Group): German PVC profile systems brand (part of Profine Group) with established UK operations supplying window and door profiles. Directly comparable to Liniar in uPVC extrusion, multi-chamber profile technology, and UK fabricator channel.
- Synseal (Synerjy Group): UK-based manufacturer of PVC-U profile systems, windows, doors, and conservatory roofs (now part of the Synerjy Group). Direct competitor to Liniar across the same product categories and UK fabricator network.
Broad incumbents
- Quanex Building Products Corporation: US-listed global manufacturer of building products including fenestration components, insulated glass, and cabinet door components. Liniar's parent company; provides capital, R&D infrastructure, and a broader fenestration portfolio context.
- Saint-Gobain: Global building materials group with a UK fenestration and glass offering. Overlaps with Liniar in window/door systems but operates at much greater scale across many product categories rather than specialising in uPVC profile extrusion.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Liniar social profiles
Digital presenceLiniar compliance and trust
Trust signalCompliance10 records
Liniar financial estimates
Financial estimateRevenue estimate
Valuation estimate
Liniar leadership team
Management profileNumber of profiles
Profiles4 records
Liniar funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Liniar 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 Liniar
What does Liniar do?
Liniar designs, extrudes, and manufactures PVCu (uPVC) profile systems and finished building products at its Derbyshire facility, supplying them through a UK-wide network of Liniar-approved independent fabricators and installers. The portfolio includes windows, residential/patio/bi-fold/composite doors, conservatories, lantern roofs, decking, fencing, composite uPVC piling, cladding, soffits and fascias, and garden rooms, supported by the LiniarConnect trade portal.
Is Liniar a public or private company?
Liniar is a private company. It is classified as corporate owned and is currently operating.
When was Liniar founded?
Liniar was founded in 1974. It employs 51 to 100 people.
Where is Liniar based?
Liniar is headquartered in Denby, United Kingdom, in the Europe region.
How does Liniar make money?
One revenue line is on record: uPVC Profile and Building Product Sales.
Who are Liniar's main competitors?
Direct peers on record are Eurocell, VEKA, Rehau, Profile 22, Duraflex, Aluplast, Kömmerling (Profine Group) and Synseal (Synerjy Group). Broad incumbents are Quanex Building Products Corporation and Saint-Gobain.
Does Liniar have an API?
No public API is recorded for Liniar.