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Laminated glass is frequently used in locations in the home most susceptible to injury from human impact such as bathrooms, doors, around staircases and in locations near the flooring (it satisfies the requirements of 'shatterproof glass' that is mandated for usage in these areas by Australian Basic AS 1288 Glass in structures).
Toughened glass has been 'tempered' by being reheated and quickly cooled once again. This procedure makes it much stronger than standard glass it can withstand greater effect loads prior to breaking. It also makes it safer since, when it does shatter, it burglarizes lots of little cubic pieces rather than hazardous fragments.
Nevertheless, toughened glass has no thermal or acoustic advantages over other glass of the 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 perform as well thermally as a manufactured IGU, considering that it is impossible to completely seal the perimeter, however it can supply great noise control. Window films are a thin polymer film consisting of 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 movies can halve 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 primary issue, or on east and west elevations directly exposed to long periods of sunshine. Nevertheless, window films might also minimize visible light transmittance.
For this reason, it is usually best to use a certified installer of window film. Frames have a substantial effect on the thermal performance of windows and doors, because energy can be acquired and lost through the frame, along with through the glass. Different kinds of frame will permit various levels of heat gain and loss, so careful option of frame is very important for efficient passive design.
Aluminium is also a really good conductor of heat and will decrease the insulating worth of a glazing system, unless specifically engineered to minimize this. A 'thermally broken' frame is made up of 2 aluminium sections linked by a structural insulator (normally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and reduces the heat streaming through the frame.
Lumber frames are an excellent natural insulator that can suit some home styles. Lumber frames should be made from species that have naturally high toughness or be treated to avoid decay and deformation.
However, this can result in gaps that permit air infiltration unless excellent draught sealing (weather stripping) is installed. u, PVC is a form of plastic (unplasticised polyvinyl chloride, also called stiff PVC). u, PVC frames supply exceptional thermal efficiency, often much better than wood or thermally broken aluminium. u, PVC is long lasting and needs really little upkeep, and can be moulded into intricate profiles that offer outstanding air seals.
u, PVC windows and doors have excellent thermal efficiency Picture: Ben Wrigley (Light House Architecture and Science) Composite frames utilize aluminium profiles on the external sections with either a timber or u, PVC inner section. These combine the low upkeep and sturdiness of aluminium with much enhanced thermal performance.
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