GRM windows was founded by my father, Gareth Gambling, in 1979. I joined the business in 1994 with the goal of taking the business forward in an ever changing, competitive marketplace. Today, our philosophy remains to supply high quality windows and doors to the Trade at a competitive price. To achieve this, we believe in delivering excellent personal service, outstanding aftercare, innovative product development and continuing to invest in top line machinery.
Our factory, based in the heart of South Wales in the village of Pontyclun, has some of the most sophisticated manufacturing machinery available to the industry. This enables GRM to produce windows with fast turn-around, very accurately and efficiently. Our achievements are recognized within the industry and we are proud to be a Rehau Authorized Partner.
Our factory, based in the heart of South Wales in the village of Pontyclun, has some of the most sophisticated manufacturing machinery available to the industry. This enables GRM to produce windows with fast turn-around, very accurately and efficiently. Our achievements are recognized within the industry and we are proud to be a Rehau Authorized Partner.
Services
GRM Windows have the values that you would expect from a well-established family business; those of commitment, trust, honesty and respect - We back these values up with a vision for how we want to take our company forward.
Be the highest quality manufacturer of PVCu windows and doors supplied to the trade in South Wales.
Be the highest quality manufacturer of PVCu windows and doors supplied to the trade in South Wales.
GRM Windows are aiming to be the best window manufacturer in South Wales to work for.
We are growing our business and this means we will be recruiting for our Production and Administration teams from time to time.
As a result of the Company's success and growth, we have an exciting opportunity for a Window Fabricator to join our team based in Pontyclun.
We are growing our business and this means we will be recruiting for our Production and Administration teams from time to time.
As a result of the Company's success and growth, we have an exciting opportunity for a Window Fabricator to join our team based in Pontyclun.
GRM Windows is committed to reducing our impact on the environment and to lowering the carbon footprint.
We manufacture high quality products that never warp or rot, retain their pristine appearance for many years.
All of our PVCu offcuts are recycled through our partnership with REHAU and any waste frames, glass and wood through our partnership with Broughshire Ltd.
All our trade customers have full access to our waste management facility to dispose of their waste.
They can do so with the reassurance that the waste is being recycled and dealt with in an environmentally friendly way.
We manufacture high quality products that never warp or rot, retain their pristine appearance for many years.
All of our PVCu offcuts are recycled through our partnership with REHAU and any waste frames, glass and wood through our partnership with Broughshire Ltd.
All our trade customers have full access to our waste management facility to dispose of their waste.
They can do so with the reassurance that the waste is being recycled and dealt with in an environmentally friendly way.
As a popular alternative to more traditional PVC French doors and PVC sliding patio doors, REHAU PVC Bi-fold doors can create an open plan feel for any type of building.
The multi-facet panes of the REHAU Bi-fold door fold back to allow a wide opening offering unrestricted access and bringing the outside into the inside.
REHAU bi-fold doors comply with the current Part L Building Regulations, providing the correct glazing unit is used.
For doors, this requirement is an overall 1.8 W/m2K.
Our standard white profile maintains a lasting gloss finish, guaranteeing that they retain their pristine appearance.
The multi-facet panes of the REHAU Bi-fold door fold back to allow a wide opening offering unrestricted access and bringing the outside into the inside.
REHAU bi-fold doors comply with the current Part L Building Regulations, providing the correct glazing unit is used.
For doors, this requirement is an overall 1.8 W/m2K.
Our standard white profile maintains a lasting gloss finish, guaranteeing that they retain their pristine appearance.
AGILA Sliding Doors are perfect for modern living, combining superior design and engineering to bring outstanding versatility and create a feeling of openness in any home.
Versatile and good looking, the Sliding Door offers slim sightlines, thereby adding light and freedom.
It is ideal as a traditional patio door, entrance door or a door leading to a conservatory.
With PVCu Sliding Doors providing energy efficiency, noise reduction and low maintenance, it is the perfect choice for any application.
Versatile and good looking, the Sliding Door offers slim sightlines, thereby adding light and freedom.
It is ideal as a traditional patio door, entrance door or a door leading to a conservatory.
With PVCu Sliding Doors providing energy efficiency, noise reduction and low maintenance, it is the perfect choice for any application.
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