Fully accredited

It’s important to Liniar to prove its products are backed by the highest standards, and an ongoing testing programme ensures that all systems remain fully compliant – often ahead of legislation. View Liniar’s accreditations below:

CORGI_Fenestration_logo_accreditationCORGI Fenestration scheme

CORGI Fenestration is a fully licenced business working with CORGI Services and will bring all the known and associated attributes of the CORGI brand to the industry.

Liniar became the first systems house to achieve formal registration to the scheme and have access to the most recognised consumer mark in the industry. Find out more here.


British Plastics Federation

Established in 1933, the British Plastics Federation (BPF) is the principal trade association for the UK plastics industry. Liniar is a member of the BPF, the logo representing a seal of industry approval.


Secured by DesignSecured by Design

Secured by Design is a police-backed initiative, with this status being awarded to products designed with exceptional security features as their main priority.

Liniar products that qualify to hold this certification are tested to meet the requirements of the Association of Chief Police Officers.


British Board of AgrementBBA Approval

The BBA (British Board of Agrement) is the UK’s major authority offering approval of construction products, systems and installers.

Their certificates are recognised by architects, engineers and specifiers as an impartial and unbiased review on the performance of products, and Liniar holds a certificate for the whole window system.


BS EN ISO 9001:2015

Liniar’s factory has achieved BS EN ISO 9001:2015 accreditation, meeting British Standards for a quality management system.

The standard is based on a number of principles including a strong customer focus, management motivation, the process approach and continuous improvement.

By continuing to meet this standard, Liniar customers benefit from consistently great products and service.


BS ISO 14001:2015 EMS         

Liniar has been certified for the BSI (British Standards Institute) ISO 14001:2015 Environmental Management System (EMS).


PAS 24:2016 KM522040PAS24

This accreditation is part of the British Standards system and shows the product has been subjected to a series of tests, demonstrating enhanced security performance, air and water tightness and wind loading to BS6375 for peace of mind.


BS EN 12608:2016

BS EN 12608:2016 is the standard of quality, consistency and performance required for UPVC extruded hollow profiles.

Products are regularly tested to ensure that they continue to meet these standards.


Buildcheck LogoBuild Check – Folding Sliding Doors

Build Check is an independent testing and certification company which operates throughout the UK and Europe and has become a highly respected provider within the marketplace, operating a management and quality system conforming to ISO/IEC 17025 (Testing) and BS EN 17065 (Product Certification) and accredited by UKAS and the BFRC.

The Folding Sliding Door scheme has been launched by Build Check to raise the standards of bi-folding doors in the UK.

There are three main sections to the test. Each product is put through 5,000 cycles by Build Check’s articulated robot, weather tested to 800 pascals (a wind speed of more than 80mph) and able to achieve a minimum U-value of 1.8.

Liniar’s ModLok™ Bi-fold was the first product to successfully meet the stringent requirements.



Liniar’s deckboards have obtained a Class 1 Fire Test Certificate to BS476:Part7:1997.


Liniar’s deckboards have been tested to BS7976:Part 2:2002, finding that slip resistance was good in both wet and dry conditions.

BS EN 660-2:1999 and BS EN 428:1993

Liniar’s deckboards have been tested for wear resistance to both these standards.

Liniar’s Accreditations

Liniar tests all of its products to meet the highest British standards through an ongoing testing programme. If a product contains all Liniar Approved components, then it also holds the following accreditations:

 Product  PAS24  BBA  Secured by Design  BS 6375  BS 12608  ISO9001
 Casement Window ✔️  ✔️  ✔️  ✔️  ✔️  ✔️
 EnergyPlus Casement Window ✔️ ✔️  ✔️  ✔️  ✔️  ✔️
 Flush Sash Window  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Tilt & Turn Window  ✔️  ✔️  ✔️  ✔️  ✔️  ✔️
 EnergyPlus 90 Window  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Resurgence Window  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Residential Door Frame  ✔️  ✔️  ✔️  ✔️  ✔️  ✔️
 French Door  ✔️  ✔️  ✔️  ✔️  ✔️  ✔️
 Patio Door ✔️  ❌  ❌  ✔️  ✔️  ✔️
 Standard Bi-fold Door  ❌  ❌  ❌  ✔️  ✔️  ✔️
 Modlok™ Bi-fold Door  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Modlok™ Residential Door  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Modlok™ French Door  ✔️  ❌  ✔️  ✔️  ✔️  ✔️
 Alumina Bi-fold Door  ✔️  ❌  ✔️  ✔️  ❌  ✔️
 Alumina Residential Door  ✔️  ❌  ✔️  ✔️  ❌  ✔️
 Alumina French Door  ✔️  ❌  ✔️  ✔️  ✔️  ✔️


 BS 476  BS 7976  BS 660-2  BS 428
 Decking (Deckboards)  ✔️  ✔️  ✔️  ✔️


 Class 1 Fire Rating
 Roofline (Soffits and Fascias)  ✔️


QNX Passive House Secured By Design Corgi Fenestration BSI12608 PAS24 Security ISO 14001 ISO 9001 bhhpa Bali NCC Queens Awards Sustainable Midlands Supporter

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