RLM DOUBLE GLAZING SUNDERLAND
A large range of energy efficient, stylish and secure windows for your home
At RLM Windows & Doors, we’re a trusted double glazing specialist, serving homes in Sunderland. For 15 years, we’ve supplied and installed premium double glazing solutions across the North East. Our energy-efficient windows, available in UPVC, aluminium, and timber-look finishes, are all UK-manufactured, FENSA-registered, and backed by a 10-year insurance-backed guarantee. Whether you need casement windows, flush sash, vertical sliding sash, or modern aluminium frames, our expert team delivers bespoke double glazing tailored to your home and budget. Contact us for a free quote for your Double Glazing Sunderland needs.

At RLM Windows & Doors, we prioritise energy efficiency in all our double glazing products. Our high-quality, UK-manufactured windows feature Argon gas-filled units and innovative thermal break technology for aluminium windows, significantly reducing heat loss and enhancing thermal performance. Compliance with Document L 2010 standards ensures that our windows contribute to energy conservation and lower energy bills.
We offer a variety of window styles, including casement, flush sash, vertical sliding sash, and aluminium windows, allowing you to choose the perfect fit for your home. Customisation options are available, ensuring your windows match your aesthetic preferences without compromising energy efficiency. With professional installation by our in-house team and FENSA registration, you can trust that your windows will maintain their energy-efficient properties and come with a 10-year insurance-backed guarantee. Visit our showroom or use our online window designer tool to explore the best energy-efficient solutions for your home.
The cost depends on several factors: window size, material choice (uPVC, aluminium, timber-look), style (casement, flush sash, etc.), number of windows, and any additional features. We recommend getting a free, no-obligation quote from our team—simply contact us or use our online form for an instant estimate.
It depends on your property type, aesthetic preferences, and budget. Our team can recommend options during a free consultation.
All our installations come with a 10-year insurance-backed guarantee.
Yes! Our showroom is located in Newcastle (Unit 2, Armstrong Drive, Westmoor, NE12 7EB). You can view our range of windows and doors in person. We recommend calling ahead to book an appointment with our team.
We serve Newcastle, Sunderland, and surrounding areas in the North East. Contact us with your postcode and double glazing needs, and we’ll confirm coverage and provide a quote.

Why not visit our showroom where you can view our range of products in person. Our team are here to help talk you through any project.
