Information in this page is based on "The Glass Guide" by Pilkington. For additional information visit the Pilkington Glass website.
The thickness and type of glass used in windows and doors are generally determined by design criteria, performance and building codes.
Most standard residential windows are fitted with clear float glass, in thickness ranging from 3-5mm. In some instances, such as over a bath or spa, building codes may require toughened glass to be used.
Doors are generally fitted with 4 or 5mm clear toughened glass or 6.38mm clear laminated glass.
Float | The most common type of glass. When broken it shatters in slivers. |
Toughened | Grade
A safety glass Heat treated for extra strength. When broken it breaks into small granules. |
Laminated | Grade
A safety glass Float glass separated by a special membrane, giving extra strength. When broken, the membrane holds the glass together. |
Choice of glass is one of the more important decisions for your new home or home addition.
Correct choice of glass can assist you maximize natural light while minimizing heat and glare, or reducing heat loss during winter.
Correct glass also helps to:
Some of the options available are summarised below.