Key features
PASSIVHAUS INSTITUT CERTIFIED
Certified by the German Passivhaus Institut, Alphawin windows & doors are ideal for Passivhaus and ultra low energy buildings.
HIGH PERFORMANCE
Alphawin has a whole window Uw value of 0.68 W/m2K. Warm edge spacers and wood fibre frame insulant are used to minimise thermal bridging through the windows and doors. Alphawin also offersdifferential glazing options which allows Passivhaus designers to optimise thermal performance and solar gain by utilising different glazing specifications depending on façade orientation.
DESIGN FEATURES
Alphawin also offers a number of design features to help create stunning
Passivhaus buildings and offering flexibility when working in
PassivHaus Planning Package (PHPP):
• Slim 90mm profile – helping designers to optimise solar gain by maximising the size of the glazing area and minimising the width of the frame
• Flush sash from interior – with elegant sightlines appealing to architects
• Minimal frame visibility from exterior
– the window frame is positioned neatly in the wall insulation, with
minimal alu-clad trim to protect the visible external frame.
NATURAL MATERIALS
Optiwin uses natural materials such as wood fibre to insulate the timber frame. Natural plant-oil based finishes are used to treat the timber part of the frame.
LOW MAINTENANCE
Optiwin's Alphawin design utilises a minimal alu-clad trim on the external frame to help keep maintenance to a minimum.
SUPPLY & FIT
Green Building Store offers a fitting service which is accredited with both FENSA and Constructionline. We can fit everything from single houses to social housing developments. The service is available for most
areas of the UK, dependent on contract size.
