Why is Passive House Super-Efficient Building Standard becoming increasingly popular?

posted in: Blog | 0

Passive House (or Passivhaus) is a green building standard that focuses on air-tightness and insulation. Hence, a Passive House-certified home should be extremely heat efficient, inexpensive to run and much more comfortable to live in.

This super-efficient building standard is big in Europe and America. Interestingly in Ireland’s Dún Laoghaire-Rathdown Council, a near suburb of Dublin, it has recently been passed at council level that Passive House is the minimum standard under their building regulations.

Athena Windows has achieved ‘Passivhaus Accredited Tradespersons’ standard and can offer this to our clients if requested on a project.

A passive house window is not really a window type but only a reference to the thermal insulation achieved by the window. A window with passive house standard features a particularly high thermal insulation value. The heat transfer coefficient Uw has to be less than or equal to 0.8 W/m2K. Installation of windows in a passive house is also critical. Appropriate measures must be taken to eliminate air leakage around the window and the installed window must achieve a Uw ≤0.85 W/m2K.

Passive house windows also allow a high solar energy transmittance. The optimum solar gain value should be between 50% and 70%. This means that the natural heat from the sun can contribute to the heating demand of the building hence reducing the annual primary energy requirement.

Not only do passive house standard windows reduce heating bills but also add to the overall comfort of the home. The excellent heat insulation properties of the window removes cold spots around the window area. This eliminates both condensation forming on the inside of the window and cold draughts within the room.

If you would like more advice on selecting windows for your home or design project then please call Athena Windows for a FREE consultation.

Telephone 07825 575395, Email colm.oneill@athenawindows.com

Lift and Slide Doors
Lift and Slide Doors