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A pioneering new glazing system with radically different looks and exceptional energy performance

Discover the look

Windows have a surprisingly dramatic effect on the overall look of a home. So we’ve made them more design-led.

It’s hard to imagine a frameless window, because chances are, you won’t have seen one before. Think wall-to-wall glass with no raised, mounted frame. So, no painted surfaces and no exposed joints

Inovation. From every angel

Every detail has been designed, considered and manufactured by the Lumi team in the UK, so this system exudes strength, rigidity and innovation from every angle

The Lumi system of windows, doors and bi-folds is the first to match both inside and out. There are no off-set windows and a truly flush finish, making Lumi perfectly balanced and proportioned in every way

A unique choice that 
brings design-led difference.

Whether you’re creating a new build, refurbishing or extending a home or if you’re looking for a different take on a replacement window, Lumi is a unique choice that brings design-led difference to any scheme

Energy efficiency that lasts

A window that’s designed to last.

“By protecting all the elements that degrade inside the glazing, we were able to create a window that looks amazing and could survive our changeable, corrosive weather

Perfect for the damp climate of the UK & Ireland

Lumi is wall to wall glass. With no joints, no painted surfaces, no connected materials, there’s nothing to maintain, nothing to corrode and no external weak points. Everything structural is protected within the glazed exterior, making the Lumi window system perfect for the damp, cold climate of the UK and Ireland

Fibre reinforced  Structure - LumiFibre reinforced 

The latest fibreglass reduces the weight of the overall window structure, while also providing exceptional strength. This extra rigidity makes Lumi perfect for a larger than average window

Triple cell glazing triple glazing - LumiTriple cell glazing
triple glazing

Every Lumi window contains 50mm of triple glazing

Insulation - LumiInsulation

The surrounding structure is packed with high density closed cell insulation. This gives Lumi extra strength and makes it extremely energy efficient

Super Spacers - LumiSuper Spacers

These strips of insulation are positioned between every pane of glass and help stop heat transfer

Super Tough Glass - LumiSuper Tough Glass

All three layers of Lumi are made from toughened safety glass as standard

Aluminium corner cleat - LumiAluminium corner cleat

The corner joints are bonded and reinforced with aluminium forming an exceptionally strong joint

Outer seal - LumiOuter seal

Aesthetics are important to Lumi. We’ve found a way to keep the all-important outer seal while keeping it flush with the gasket

Stainless steel furniture - LumiStainless steel furniture

All extra window furniture is made from stainless steel. Every element is either custom made by the Lumi team in the UK or sourced from the very finest German suppliers

High Tolerance Hinge - LumiHigh Tolerance Hinge

All Lumi hinges are extra strong and extra durable

Download the Lumi Windows Brochure PDF

Download the brochure

Lumi Windows Brochure

Lumi Window Profile Section Gallery

Coming soon


The Lumi Windows range of products provide a full solution for any contemporary installation with dramatic oversized glazing areas

Heronhurst Professional are authorised suppliers and installers of the full Lumi range of Windows and Doors throughout Monmouthshire, Torfaen, Powys, South and Mid Glamorgan and Herefordshire

Visit us
HERONHURST Window and Door Studio
18 Mill Street Industrial Estate, Abergavenny  NP7 5HE
Find us in the Town Centre, just off the main A40 behind Aldi

Talk with us on Abergavenny 01873 877670
Aftersales Service 01873 858428

What's App and SMS Messages 07723455659

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