Frequently Asked Questions

Our factory is located is Pontyclun, South Wales, UK
Rehau – Total 70c in any colour, Total 70s in white, Rio Flush, Slinova, Artevo
We make UPVC windows and doors

We do buy in products – mainly composite doors. We also buy in glass.

No we do not

Yes, we can supply contact details of some of our customers for you depending on your location

If you are self-installing or designing, then yes. If you are buying and then getting someone else to install – then NO. We find we have a different language to homeowners, and there are often misunderstandings between them and us.
No, we do not spray

We do deliver – price on application

 

Have further questions?

You can speak to our friendly team for more information.

Start your design today

Your next project starts with GRM Windows. Our friendly team in South Wales are on hand to help make your vision a reality. Explore our website further or get in touch using our details below.

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More from the GRM range

Services Windows

Windows

Working with our profile partners at REHAU allows us to deliver on some of the UK’s most unique projects. With a variety of profiles, colours and finishes, we’ve been able to push the boundaries of design whilst maintaining the thermal performance, security and quality of market leading windows.

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The perfect door has the ability to make a house a home. From Rodenberg panels to our all new in-house Circuit Collection, we offer a wide range of panels, designs and finishes to truly personalise your, or your customer’s homes.

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Bringing Passivhaus to the UK market, we’ve spent the last decade refining and assisting our profile partners REHAU in the journey to a greener future. Our expertise has allowed us to successfully deliver on large scale projects, government backed housing developments and commercial Passivhaus developments over the past decade.