Established in 1979, GRM Windows has grown to become one of South Wales most experienced and trusted manufacturers of quality PVCu Windows, Doors, Panels and Conservatories to both trade and homeowners alike.

The GRM Promise

• A supply partnership supporting our customers needs
• Full support package of advice, guidance and design software to help your business
• Thorough quality control checks on all orders prior to despatch
• Aftercare that helps after your order has been received
• Full 10 year warranty on all products
• Continued investment in production techniques and product development

• DESIGNING

  Providing a customer focused and flexible approach to design

• DEVELOPING

  Utilizing our knowledge and experience to develop the highest quality windows and doors

• DELIVERING

  Supporting both trade and homeowners to deliver the best possible installation service