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Laminated glass is frequently used in areas in the home most vulnerable to injury from human impact such as bathrooms, doors, around staircases and in locations close to the flooring (it satisfies the requirements of 'shatterproof glass' that is mandated for use in these areas by Australian Basic AS 1288 Glass in buildings).
Toughened glass has been 'tempered' by being reheated and rapidly cooled again. This process makes it much more powerful than basic glass it can withstand higher effect loads before breaking. It likewise makes it safer since, when it does shatter, it burglarizes many small cubic pieces instead of unsafe fragments.
However, toughened glass has no thermal or acoustic benefits over other glass of the exact same toning or thickness. Secondary glazing is where single-glazed windows are retrofitted with a transparent acrylic or glass sheet connected to the inside of the frame or openable sash with a secondary frame or with magnetic strips.
Secondary glazing will not carry out as well thermally as a manufactured IGU, because it is impossible to absolutely seal the perimeter, however it can offer excellent noise control. Window movies are a thin polymer movie including a taking in 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 movies can cut in half the general SHGC of the window by soaking up and/or showing solar radiation. This can be particularly helpful in hotter climates where cooling is the main concern, or on east and west elevations directly exposed to extended periods of sunshine. However, window films may also minimize visible light transmittance.
For this factor, it is typically best to use an accredited installer of window film. Frames have a considerable influence on the thermal efficiency of doors and windows, due to the fact that energy can be gained and lost through the frame, as well as through the glass. Different types of frame will permit various levels of heat gain and loss, so careful option of frame is essential for reliable passive style.
Aluminium is likewise an extremely good conductor of heat and will decrease the insulating worth of a glazing unit, unless particularly engineered to reduce this. A 'thermally broken' frame is made up of 2 aluminium areas linked 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 suit some house designs. Wood frames need to be made from species that have naturally high resilience or be treated to avoid decay and deformation.
However, this can lead to gaps that permit air infiltration unless good draught sealing (weather condition removing) is set up. u, PVC is a type of plastic (unplasticised polyvinyl chloride, likewise understood as stiff PVC). u, PVC frames supply excellent thermal efficiency, often much better than lumber or thermally broken aluminium. u, PVC is long lasting and requires extremely little maintenance, and can be moulded into complex profiles that supply exceptional air seals.
u, PVC doors and windows have exceptional thermal efficiency Photo: Ben Wrigley (Light Home Architecture and Science) Composite frames use aluminium profiles on the outer areas with either a wood or u, PVC inner area. These combine the low maintenance and sturdiness of aluminium with much improved thermal efficiency.
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