The Heritage Glazing Authority

We invented ultra-thin double glazing for listed buildings.

Complete Conservation Service

From planning applications to final installation, we're with you.

Unmatched Certification Standards

One of only two UK companies holding full BS EN 1279 Parts 1-6 certification.

Authentic Slim Sightlines

Preserve architectural integrity with 6mm sightlines – the slimmest available.

The Art of the
Heritage Fit

Installing SlimLite™ is a precise craft, not a standard building task. When working with listed assets, the goal is total preservation. Glazing beads must be positioned with surgical accuracy to ensure uniform contact with the glass. For heritage replacements, we don’t just “fit” windows; we mirror the original glazing techniques that have defined the property for centuries.

Before a new unit is even positioned, the frame must be expertly prepared with high-grade sealants. We handle every pane with the reverence it deserves, ensuring zero stress on the unit during the set. The final weather-tight seal is the finishing touch on an installation that doesn’t just meet specifications – it defines them.

 

Precision Engineering for Period Properties

A SlimLite™ unit is only as good as its installation. We ensure that every ounce of thermal and acoustic performance is realised through superior fitting. Our decades of authority in the trade mean we understand the nuances of sash, bay, and timber frames better than anyone else in the industry.

  • Authoritative guidance on the complete installation lifecycle

  • Specialist techniques for heritage frame replacement

  • Traditional glazing beads paired with modern sealing

  • Rigorous quality assurance final check protocols

glass panels

Frame Restoration and Preparation

We begin by treating your building with the respect it deserves. For frame replacements, we remove old components with care, ensuring the structural integrity of the surrounding masonry is untouched. We don’t ignore the details; we check every level and inspect every inch of timber for rot before we proceed.

For retrofitting SlimLite™ into existing frames, we clear away the decades of debris, cleaning every channel to a pristine standard. For timber windows, we treat the wood to ensure it lasts as long as our glazing. We ensure drainage is perfect, because a SlimLite™ installation is built for a lifetime.

Request Your Technical Quote

Contact our knowledgeable team today to discuss specifications, performance requirements, and obtain competitive pricing for your project.

"Great service along with a quality product, also the best advice on the different types of the slimlite range."

Martin

via Trustpilot

"Great high quality product, does exactly what it is supposed to i.e. significant improvement in thermal insulation and noise reduction. I had an issue with the order which was immediately resolved. Would thoroughly recommend."

Duncan

via Trustpilot

"Experts in their field, a well run family business. Pleasure to deal with. Good communicators and they produce a quality product."

James Sunderland

via Trustpilot

Frequently Asked Questions

Here are some of the most common questions we’re asked by installers looking for wider support beyond the fitting process.