GRM Windows

GRM Windows GRM Windows Ltd Incorporating core values of quality, customer service, a wide range of products and a competitive price for each and every job we process.

Supplying directly to trade and public for 30years GRM windows has grown to become one of South Wales most established suppliers of PVCU Windows, Doors, Panels and Conservatories.

Looking forward to a bit of weekend sunshine? 🌞 If you are heading to Llanerch Vineyard this weekend then look out for t...
17/06/2026

Looking forward to a bit of weekend sunshine? 🌞 If you are heading to Llanerch Vineyard this weekend then look out for the GRM Windows and doors we have installed as part of the vineyards most recent extension.

We fitted a range of some of our favourite products, from Tilt & Turn to classic French doors and Total70 windows in brown laminate.

We absolutely loved working on this project, and it'll be fantastic to see people enjoying it for years to come.

Planning a new development?Choosing the right window and door supplier can make a huge difference to a project.At GRM Wi...
14/06/2026

Planning a new development?

Choosing the right window and door supplier can make a huge difference to a project.

At GRM Windows, we work alongside architects, developers and contractors to provide made-to-measure solutions for projects of all sizes. From initial specifications through to manufacture and delivery, our team is on hand to help keep things moving.

With in-house manufacturing and a wide range of systems available, we can support everything from residential developments to commercial schemes.

Let's talk!

✉️[email protected]
📞 01443 226 987
💻 grmwindows.co.uk

Exciting news...we've moved! 🤩We can't wait to welcome you to our brand new office space. You wont need to go far as our...
11/06/2026

Exciting news...we've moved! 🤩

We can't wait to welcome you to our brand new office space. You wont need to go far as our new office takes centre stage right outside our factory.

With a functional, air-conditioned office space on the top floor and brand new showroom ready to be kitted out on the bottom floor, this office represents a new lease of life for GRM! We are growing. Bigger office, bigger projects, better windows. 💪

Make an entrance🚪Our Circuit Door collection is the perfect balance of comfort and efficiency, with style options to sui...
01/06/2026

Make an entrance🚪

Our Circuit Door collection is the perfect balance of comfort and efficiency, with style options to suit everyone property ✨

💻 grmwindows.co.uk
⌨️ [email protected]
📲 01443 226 987

From SLINOVO and ARTEVO to Tilt&Turn and our Circuit Door collection, we've got windows and doors systems to match every...
27/05/2026

From SLINOVO and ARTEVO to Tilt&Turn and our Circuit Door collection, we've got windows and doors systems to match every property!

Our goal is to make sure that for every architect, builder and homeowner, your windows and doors systems are functional and stylish with all of the robust energy efficiency and sustainable ethos of a classic REHAU build.

If you're an architect or builder working on a new project, or a homeowner looking to give your property the windows and doors it deserves, get in touch!

💻 grmwindows.co.uk
⌨️ [email protected]
📲 01443 226 987

We've been a little quiet on here... But for good reason! Big things are happening at GRM Windows, and it's been heads d...
13/05/2026

We've been a little quiet on here... But for good reason!

Big things are happening at GRM Windows, and it's been heads down, foot to the pedal for the last few weeks now as we keep things moving in the factory and the office v

We can't wait to share some of our exciting projects and updates with you🚪🪟

Great doors can make it break a project. 🚪At GRM Windows, we believe that designing excellence goes well beyond the plan...
02/05/2026

Great doors can make it break a project. 🚪

At GRM Windows, we believe that designing excellence goes well beyond the planning phase, it's in the details, the special final touches, that's where a project can really come to life.

Our circuit door collection offers a real opportunity to tailor your entrance way with panels, glass and finishes that reflect the style, personality and the history of your build or renovation, without sacrificing on performance.

Click the link in our bio to explore the full range on our website:

💻 grmwindows.co.uk
⌨️ [email protected]
📲 01443 226 987

❗HUGE OPPORTUNITIES AVAILABLE❗You heard us correctly, we're hiring for three new roles at GRM. That's three new people t...
30/04/2026

❗HUGE OPPORTUNITIES AVAILABLE❗

You heard us correctly, we're hiring for three new roles at GRM. That's three new people to join the GRM family at our workshop in Pontyclun. 💪

We're looking for a full time:
- UPVC Fabricator
- Sales Order Processor
- Customer Service, Sales and Admin Assistant

These are great opportunities to join one of South Wales most experienced and trusted windows and doors manufacturers. We have a great team that loves what they do, and we can't wait to welcome these roles into the fold. 🙌

To apply click the link below 🔗

https://uk.indeed.com/cmp/Grm-Windows/jobs?jk=5567562b8c010a6e&start=0

What started as a family run business in South Wales has grown into one of the UK's most trusted REHAU window and doors ...
23/04/2026

What started as a family run business in South Wales has grown into one of the UK's most trusted REHAU window and doors manufacturers. Isn't that quite something!

From the very beginning, we've prioritised quality workmanship with modern engineering to create doors and windows systems that are stylish, functional and welcome the outside in without sacrificing on thermal performance.

We're proud of who we are, and we we have come from. 💪

💻 grmwindows.co.uk
⌨️ [email protected]
📲 01443 226 987

Address

Old Joinery Yard
Pontyclun
CF729DT

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 3:30pm

Telephone

+441443226987

Website

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