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Laminated glass is typically used in locations in the home most vulnerable to injury from human impact such as bathrooms, doors, around staircases and in locations close to the flooring (it meets the requirements of 'shatterproof glass' that is mandated for use in these areas by Australian Standard 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 standard glass it can resist higher effect loads before breaking. It likewise makes it safer due to the fact that, when it does shatter, it burglarizes numerous little cubic pieces instead of harmful shards.
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 carry out as well thermally as a produced IGU, because it is impossible to totally seal the border, however it can offer excellent noise control. Window films are a thin polymer film including an absorbing dye or reflective metal layer, with an adhesive support. They stay with your glazing to alter its colour or make it reflective.
Applied to existing glass, some window movies can halve the general SHGC of the window by absorbing and/or reflecting solar radiation. This can be especially beneficial in hotter climates where cooling is the main concern, or on east and west elevations directly exposed to long periods of sunshine. Window movies might also decrease noticeable light transmittance.
For this reason, it is typically best to utilize an accredited installer of window movie. Frames have a considerable effect on the thermal performance of doors and windows, because energy can be gained and lost through the frame, as well as through the glass. Different types of frame will permit different levels of heat gain and loss, so mindful choice of frame is essential for reliable passive design.
Aluminium is likewise an extremely good conductor of heat and will decrease the insulating value of a glazing unit, unless particularly engineered to lower this. A 'thermally broken' frame is comprised of 2 aluminium areas connected by a structural insulator (generally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and lowers the heat streaming through the frame.
They can be pricey, however rates are reducing as they become more common. Lumber frames are a great natural insulator that can fit some home designs. Wood frames should be made from types that have naturally high resilience or be dealt with to prevent decay and contortion. Check that the wood is sourced from a sustainably handled forest.
However, this can lead to spaces that permit air infiltration unless good draught sealing (weather condition stripping) is installed. u, PVC is a type of plastic (unplasticised polyvinyl chloride, also known as rigid PVC). u, PVC frames provide exceptional thermal efficiency, often better than lumber or thermally damaged aluminium. u, PVC is long lasting and needs extremely little maintenance, and can be moulded into intricate profiles that offer exceptional air seals.
u, PVC doors and windows have outstanding thermal efficiency Picture: Ben Wrigley (Light Home Architecture and Science) Composite frames utilize aluminium profiles on the external areas with either a timber or u, PVC inner area. These integrate the low maintenance and resilience of aluminium with much improved thermal performance.
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