Original SlimLite™ offers homeowners a high-performance alternative to original single-glazed windows. With slim units filled with argon gas, you can enjoy warmth and efficiency while respecting the most stringent heritage requirements.
Krypton gas improves thermal efficiency
Slim profile preserves sash windows and timber windows
Heritage units accepted in many conservation areas
Reduce heat loss without altering the entire window
High quality of life through efficient, sympathetic glazing
Original SlimLite™ slim double glazed units are designed to be low-maintenance. With proper installation and minimal upkeep, they will continue to perform for years.
Find answers to common questions about Original SlimLite™ glazing.
Yes. Our slim double glazed units are often approved by conservation officers for use in listed buildings and conservation areas.
Depending on cavity size, U values on our Original SlimLite™ krypton-filled units range from 1.4 to 2.1, improving thermal properties compared to original single glazing.
Yes. SlimLite™ units are designed for sash windows and timber frames, maintaining the slim profile and original appearance.
In many conservation areas, yes. We can guide you through the planning permission process with advice tailored to your property.
Original SlimLite™ uses krypton gas to improve thermal efficiency and reduce heat loss, while preserving slim sightlines.
Original SlimLite™ is the trusted solution for listed buildings. These discreet units provide invisible efficiency without disturbing the historic quality of your property.
Whether you are planning sensitive renovation or complete restoration, SlimLite™ gives you the peace of mind that your home remains true to its character while dramatically improving thermal performance.
Our heritage experts visit your property or project site to evaluate existing windows, understand your vision, and recommend the best approach. We navigate conservation area requirements and support planning application preparation with authority.
No two heritage properties share the same story. We develop comprehensive proposals detailing how our slim units will complement your frames, glass specifications and sight lines. Expect transparent pricing and honest project timelines.
Your bespoke glass units are crafted to exacting specifications at our dedicated facility. Every unit undergoes stringent quality verification, confirming sealant integrity, gas retention, and full BS EN 1279 compliance before dispatch.
Whether collaborating with your chosen installer or our approved network, we deliver comprehensive support. All installations carry guarantees against failures, with our team available for ongoing guidance and maintenance advice.