HPG alpin®

HPG alpin®

HPG alpin® Roof Window Element

Available as single or multiple element. Prefabricated at our facility.
Roof window installed 150 mm above roofing, minimizes backwater seepage.

Everything included

  • Roof window (VELUX, ROTO or HPG oecoline®)
  • Interior lining with ceiling connection
  • Vapor barrier film connection
  • Insulation
  • Sub-roof film connection (heat-fused to be water and wind tight)

Special Features

  • Roof window installed 150 mm above standard installation height
  • Water and wind tight connection on seamless sub-roof
  • Exterior insulation: 80 mm
  • Window actuators and wiring hidden
  • Installed fast

Guaranteed Added Value

  • Optimal in terms of structural physics
  • More comfort through thermal insulation and soundproofing
  • No construction faults to be discovered later
  • Ensures a building’s value preservation


  • Just-in-time delivery to the construction site
  • First-time installations supervised by our specialists