Window and Door Accreditations

As Head of Testing here at Liniar, it’s my job to make sure that everything the tech-bots design is made to the very highest standards. Basically, I like to test things to destruction. So far I’ve broken my arm and now my wrist… but never a Liniar product!

I’m a robot, so its in my programming to be a perfectionist. There is no chance I would ever allow any sub-standard products to go on sale – but I don’t expect you to just take my word that everything we produce is perfect.

That’s why we get everything accredited by independent bots at various quality control organisations, giving our customer-bots peace of mind that they will be getting nothing but the best.

So, here are a few accreditations that you might see as you’re looking through the Liniar website, with explanations of what each one means.


Secured by Design

Secured by Design

Backed by the police-bots. Secured by Design status is awarded
to products that essentially “design out crime!”

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


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

A BBA certificate means that the claims made by the tech-bots at
Liniar are warranted and that the products comply with
regulations and meet expectations.Their certificates are
recognised by architect-bots, engineer-bots and specifier-bots.

BS EN ISO 9001

BS EN ISO 9001:2008

This is the ‘British Standard’ designed to ensure we bots at
Liniar continue to provide strong customer focus, the motivation
and implication of top management, the process approach and
continual improvement

By continuing to meet this standard, our customer-bots benefit
from consistently great products and service.


PAS 24:2012

This accreditation is another ‘British Standard’ and shows the
product has been subjected to a series of tests for enhanced security
performance, air and water tightness and wind loading – phew!

Fun fact: The logo to the left is associated with this accreditation;
sometimes it will have a number underneath starting with
“KM5220”. If this ends in 39 it’s for windows and 40 means doors!

BS EN 12608-2003

BS EN 12608:2003

This is the standard for the “quality, consistency and
performance required for uPVC extruded hollow profiles”. In
other words, we test our PVC profiles regularly to make sure
they meet the highest standards – which in turn ensures your
windows and doors are top quality!

Buildcheck Logo

Build Check – Folding Sliding Doors

Build Check is also full of independent testing bots operating
throughout the UK and Europe. They launched the Folding
Sliding Door scheme to raise the standards of bi-fold doors
in the UK.

They have a mini version of me, but he’s blue and I’m unsure
of his name. He puts each door through 5,000 cycles, then it’s
weather tested to 800 pascals (a wind speed of more than
80mph) and must be 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 – which was
no surprise to me!

Screen Shot 2015-10-30 at 15.08.58And there we have it.

Not only are Liniar products ‘tested by robot’ but they’re backed by the schemes above too. If you go onto each product and scroll down to the “explore” sections on each page, you can see the different accreditations that product has been awarded.

At Liniar we are always putting products through their paces, so our accreditations are always being updated.  Personally, I’d like a “Tested by Mark II” badge to be added…

Until next time!

Mark II


P.S. It’s Halloween this weekend, so I’ve been a busy bot today! I had a day off testing, penned my blog and then carved my very own pumpkin! Here’s the end result :) Pumpkin


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Part of something bigger

In 2015, leading PVCu systems company Liniar was purchased by US-based, NYSE-listed Quanex Building Products. This acquisition meant…

QNX Passive House Secured By Design Corgi Fenestration PAS24 PAS12608 BBA BPF NBS bhhpa Bali NCC Queens Awards Sustainable Midlands Supporter

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