More light in.
Less heat out.
Lumi’s edge to edge design with no vertical or horizontal frame allows more light in. Argon-filled, low E-glass and super-tight double gasket seals let less heat out.
Lumi glass is bonded onto the unit structure which is then fixed in position with internal double gaskets. There’s simply nowhere for heat to leak out.
More chambers for less loss
Lumi windows are beautiful on the outside and really clever underneath. The inner chamber design creates ‘convection breaks’ that keeps heat in and cold out.
Lumi uses ‘low-e glass’ that prevents heat escaping thanks to a microscopically thin, heat-reflective coating.
Zero cold flex
The way Lumi glass is bonded to the unit frame means they flex less when the temperature dips below -5oC. That flex ruptures seals and lets heat out, which is why Lumi perform better than traditional windows no matter how low the thermometer drops.
Better performance is visible
Lumi undergoes rigorous efficiency tests to
prove its heat retaining claims. This thermal
image shows how it outperforms traditional
Free Advice Today! Find out more about how you can replace the windows in your home and start your Lumi transformation
Lift & Slide Doors
Lumi doors effortlessly bring the outside in when the weather is good and keep it outside when it isn’t.
Lumi won’t just transform your home’s appearance, it will also improve its security and efficiency.
The perfect complement to the Lumi look, our Silka door range is equally sleek.
Completely flat, yet totally stand out
Lumi stories, shared by our customers on Instagram