Composite timber and aluminium joinery 

Size: 38mm
Application: Character homes
Other: Over 50% more thermally efficient than standard aluminium

Perfect for homes in cooler climates. The thermal efficiency of ALTI windows and doors is achieved by integrating the insulating properties of timber with strong and low maintenance aluminium.

With a variety of timbers available, the grain and colour of ALTI joinery can be matched to other wood finishes within the room, such as floors, mouldings and even bench tops and cupboard doors.


  • 38mm platform
  • Double glazing capacity up to 26mm
  • Performance up to 2500pa ultimate wind pressure
  • 25mm facings
  • Flat and square front face
  • Concealed drainage options
  • High thermal performance
  • Passive ventilation options

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