Choosing the right glass
As the benefits of choosing the right glass are not immediately visible, they are sometimes overlooked. However when it comes to cutting costs on your project, it pays to first understand the importance of glass performance on your building, it’s occupants and the environment.
The impact of glass performance
With over 40% of a home’s heating lost and 87% gained through windows alone, glass is a pretty critical element in building design. The better the thermal performance of your windows, the better the building will be at naturally regulating internal temperatures. And the higher the light transmission, the more natural light is able to enter the building.
Choosing the right glass type is determined by the climate, elevation, surroundings and building requirements, be it reducing glare and heat gain, insulating, letting in natural light, or a combination. Take the quiz below to find the right glass for you.
The impacts of glass performance are wide-reaching and include:
- Environmental benefits – save greenhouse gas emissions by reducing the amount of power required to artificially cool, heat or light up the inside of a building.
- Financial benefits – save money on your power bill
- Health benefits – less artificial lighting or temperature control means better overall heath and well-being of building occupants, resulting in greater productivity and moods.
The "good, better, best" scenario for your windows
A good starting point for your windows would be a single glazed low-E coated glass like LoE-i89. For windows receiving more sun, we would recommend a double glazed IGU as a minimum like our EnerSave range with clear and clear on either side or grey on one side to further block the sun, although this will effect visibility. However most buildings should consider a double glazed IGU with a low-E coating on surface 2 or 3 for it’s insulating properties and solar control.
Then for western elevations receiving direct sun, the ultimate double glazed Low-E combination is a low-E coating like LoE-366 on surface 2 plus a room side coating like LoE-i89 on surface 4. See below for associated products and download our Glass Performance Chart to compare.
A useful tip to lower the overall project cost without severely impacting performance is to pick and choose which windows warrant the added expense of the best IGU combination and which are protected by shade and less likely to need it.