Sealed Double-Glazed Units
Advance Glass delivers bespoke, high-quality sealed double-glazed units, tailored to meet your specific requirements—whether for a one-off domestic repair or large-scale refurbishment projects. Our units offer the following premium features:
Manufactured to BS1279 Standards: Adhering to the industry’s rigorous benchmark for sealed units.
Inspection Assurance: Each unit is accompanied by written confirmation that it has passed our stringent quality inspection.
Energy Efficiency: Designed to achieve a U-value of up to 1.1, ensuring compliance with A-rated energy standards.
Reliable Guarantees: Choose from a 5 or 10-year guarantee, based on the unit's drainage system, for added peace of mind.
Triple-Glazing Available: For superior insulation and noise reduction, we also offer high-performance triple-glazed units.
In addition, we are excited to offer Slim Line Sash Units for timber windows, allowing for a sleek, modern finish that enhances both performance and aesthetics. Plus, we now offer the option to incorporate antique glass into these units, preserving the charm of historic windows while providing modern efficiency.
Whatever the scope of your project, Advance Glass is committed to delivering premium glazing solutions tailored to your exact specifications.

"How to Get Your Perfect Sealed Double-Glazed Units"
Getting your bespoke sealed double-glazed units from Advance Glass is simple and straightforward. Here’s how:
Get in Touch: Contact our team to discuss your project needs—whether it's a single unit for a home repair or a large order for a commercial refurbishment.
Standard Glass
Enhanced Safety & Security with Toughened or Laminated Glass
Specialty & Decorative Glass options for unique designs and applications
Custom Specifications: We’ll work with you to determine the exact size, style, and performance specifications, including options like triple glazing or Slim Line Sash units for timber windows.
We’re here to help you choose the perfect solution by explaining the benefits of each option.
Available air gap sizes: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, and 20mm
While our standard spacer bar color is black, we also offer a range of stylish alternatives, including Bronze, White, Gold, and Silver to complement your design.
Georgian, Leaded or our new Duplex bars
Quick Quote: Once we have the details, we’ll provide you with a competitive, no-obligation quote.
We provide quotes for windows, doors, and limited custom projects to suit your specific needs.
Manufacturing and Delivery : After approval, our skilled craftsmen will create your units to the highest standards, ensuring they meet BS1279 and your performance requirements.
We can even fit them ,You can choose to pick up your units directly, or we can deliver them to you at a competitive rate. For added convenience, we also offer professional installation services. for you.
Guarantee & Support: Enjoy peace of mind with our 5 or 10-year guarantee (depending on drainage), and contact our support team for any questions or additional needs.
Contact Advance Glass today, and let us supply you with the ideal sealed double-glazed units tailored perfectly to your project needs.
Advance Glass will supply all the necessary documentation.
Our 10-year guarantee is fully protected, even in the highly unlikely event of Advance Glass going out of business, as it is supported by the Certass Scheme.



