Low-e coatings make glass a practical wall material for contemporary living spaces.

Low-e coatings can effect a very dramatic improvement in both U-value and SHGC but they must be employed correctly or they will either deteriorate or fail to perform to specification. Low-e coatings can be used in combination with clear, toned or reflective glass

-High transmission/low-e glass has a coating that allows daylight from the sun to pass into the house but reduces the amount   of the long wavelength infrared heat that can escape through the window.
-Low transmission/low-e glass has a coating that reduces the amount of solar heat gain while still maintaining good levels of     visible light transmission.

Composite frames use thin aluminium profiles on the outer sections with either a timber or uPVC (unplasticised polyvinyl chloride) inner section. These combine the low maintenance and durability of aluminium with improved thermal performance.

Timber frames are a good natural insulator. They do require larger tolerances in openings which can result in gaps that allow air infiltration unless good draught sealing (weather stripping) is installed. Timber absorbs carbon dioxide as it grows and retains that carbon until the wood is burnt or decays. Timber species must have naturally high durability or be treated to prevent decay and deformation. Check that the timber is sourced from a sustainably managed forest.


Windows can be a major source of unwanted heat gain in summer and significant heat loss in winter. Up to 40% of a home’s heating energy can be lost and up to 87% of its heat gained through doors and windows (McGee 2013, your home.gov.au).

Energy efficient windows make your home more comfortable, dramatically reduce your energy costs and help to create a brighter, cleaner and healthier environment.

Eco Timber Windows use:

  • only the highest performing low-e double glazed insulated glass units to maximise performance
  • at least 3 layers of timber bonded together, making frames strong and stable 
  • Class One durable timber, resistant to rot
  • sustainably certified timbers FSC®, PEFC® 
  • controlled conditions in our workshop when applying paints and stains to windows and doors
  • high performance low-e double & triple glazing with U-values to 0.7W/m2K
  • laminated timber construction for optimum stability & thermal performance, meeting Passivhaus standards in Australia
  • Timber + Aluminium windows & doors to achieve Bushfire Attack Level to BAL 29
  • European D4 standard glues to waterproofing on all joins
  • European hardware for all fixtures and fittings
  • full perimeter dual compression seals on all windows and doors.



Laminated glass has a plastic glazing layer, called an interlayer, to improve impact resistance. This interlayer is placed between two sheets of glass in order to reduce the danger of the glass breaking and forming long dangerous shards. Typical applications include areas in the home most prone to injury from human impact such as bathrooms, doors, around staircases and in areas close to the floor. Careful selection of different interlayer types has the added advantage of addressing specific noise and energy efficiency requirements.

Low emissivity glass (commonly known as low-e glass) has either a vacuum-deposited thin film metal coating or a pyrolytic coating. As vacuum-deposited coatings are soft, for protection and longevity they must only be deployed inside an insulating glass cavity. Pyrolytic coatings are baked onto the surface in the factory while the glass is still hot to make it hard and durable. Soft and hard coatings are available in products for use in both high and low transmission applications.