PROGRESSION windows and doors for Passivhaus projects Green Building Store


A-rated windows
Passivhaus certified windows at Loch Leven low energy house

U values as low
as 0.68 W/m2K
Swann Edwards Passivhaus Office with PROGRESSION Passivhaus certified windows

Part Q compliant

Crickhowell Passivhaus with PROGRESSION Passivhaus certified timber windows

narrow sightlines

Low maintenance

Our specialist Passivhaus window and door range with minimalist contemporary design, at a competitive price.

The PROGRESSION range offers a low maintenance frame with narrow sightlines and high Passivhaus performance.

  • U value as low as 0.68 W/m2K
  • Passivhaus-certified A-rated windows
  • Minimalist, narrow sightlines
  • Low maintenance design
  • Part Q compliant options*

*Window and glazed door

Our PROGRESSION windows and doors are available in the following styles


PROGRESSION Passivhaus certified timber window


Green Building Store PROGRESSION high performance triple glazed timber door

Other door styles

PROGRESSION lift and slide door

Affiliations & Accreditations