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Laminated glass is typically used in locations in the house most vulnerable to injury from human impact such as bathrooms, doors, around staircases and in locations close to the floor (it satisfies the requirements of 'shatterproof glass' that is mandated for usage in these locations by Australian Basic AS 1288 Glass in buildings).
Toughened glass has been 'tempered' by being reheated and quickly cooled again. This process makes it much more powerful than standard glass it can withstand greater effect loads prior to breaking. It also makes it much safer because, when it does shatter, it breaks into lots of small cubic pieces instead of harmful shards.
However, toughened glass has no thermal or acoustic benefits over other glass of the same toning or density. Secondary glazing is where single-glazed windows are retrofitted with a transparent acrylic or glass sheet connected to the within the frame or openable sash with a secondary frame or with magnetic strips.
Secondary glazing will not carry out as well thermally as a produced IGU, given that it is impossible to absolutely seal the perimeter, but it can provide great noise control. Window movies are a thin polymer movie containing an absorbing color or reflective metal layer, with an adhesive backing. They adhere to your glazing to change its colour or make it reflective.
Applied to existing glass, some window films can halve the general SHGC of the window by absorbing and/or reflecting solar radiation. This can be particularly useful in hotter environments where cooling is the main concern, or on east and west elevations directly exposed to extended periods of sunshine. Window films might likewise lower visible light transmittance.
For this reason, it is generally best to use a recognized installer of window film. Frames have a significant impact on the thermal performance of doors and windows, because energy can be gotten and lost through the frame, as well as through the glass. Various types of frame will allow different levels of heat gain and loss, so careful option of frame is essential for efficient passive style.
However, aluminium is likewise a great conductor of heat and will reduce the insulating value of a glazing unit, unless particularly crafted to lower this. A 'thermally broken' frame is made up of 2 aluminium sections connected by a structural insulator (generally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and decreases the heat streaming through the frame.
Timber frames are a good natural insulator that can match some house styles. Lumber frames need to be made from types that have naturally high sturdiness or be dealt with to avoid decay and deformation.
(weather stripping) is installed.
u, PVC doors and windows have exceptional thermal performance Photo: Ben Wrigley (Light Home Architecture and Science) Composite frames use aluminium profiles on the outer areas with either a lumber or u, PVC inner area. These combine the low maintenance and sturdiness of aluminium with much enhanced thermal efficiency.
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