Triple glazed windows

Green Building Store offers high performance timber and alu-clad windows and doors, combined with dedicated personal service.

  • Triple glazed as standard
  • Timber and alu-clad frame options
  • Competitive prices
  • Friendly non-pushy technical sales team
  • Passivhaus and low energy expertise
  • 20+ years’ experience of supplying high performance timber windows & doors
  • Personal service and after sales care
  • 10 year warranties on in-house  window & door ranges
  • Wide rangeof options for all budgets and requirements


Our best-selling high performance range for replacement windows or new build and retrofit energy efficient homes. U value as low as 0.85 W/m2K


For Passivhaus and advanced energy efficient specification projects U value as low as 0.68 W/m2K


Passivhaus certified frameless window for contemporary new build projects. U value as low as 0.68 W/m2K


High performance range for retrofits and new builds wanting energy efficient windows and a traditional appearance. U value as low as 0.85 W/m2K

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