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Laminated glass is frequently used in areas in the house most vulnerable to injury from human effect such as bathrooms, doors, around staircases and in locations close to the flooring (it meets the requirements of 'security glass' that is mandated for usage in these areas by Australian Standard AS 1288 Glass in buildings).
Toughened glass has been 'tempered' by being reheated and quickly cooled once again. This process makes it much stronger than basic glass it can withstand greater impact loads before breaking. It also makes it more secure due to the fact that, when it does shatter, it breaks into numerous little cubic pieces rather than dangerous fragments.
Toughened glass has no thermal or acoustic advantages over other glass of the very same toning or thickness. 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 perform as well thermally as a produced IGU, given that it is impossible to absolutely seal the border, however it can offer good noise control. Window films are a thin polymer film containing a soaking up dye or reflective metal layer, with an adhesive support. They stick to your glazing to change its colour or make it reflective.
Applied to existing glass, some window films can halve the overall 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. Window movies might also reduce noticeable light transmittance.
For this reason, it is generally best to utilize a certified installer of window film. Frames have a considerable effect on the thermal performance of doors and windows, due to the fact that energy can be acquired and lost through the frame, in addition to through the glass. Different types of frame will enable different levels of heat gain and loss, so cautious choice of frame is essential for effective passive design.
Nevertheless, aluminium is likewise a really good conductor of heat and will reduce the insulating value of a glazing system, unless specifically engineered to reduce this. A 'thermally broken' frame is comprised of 2 aluminium sections connected by a structural insulator (normally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and decreases the heat flowing through the frame.
Wood frames are a good natural insulator that can suit some house styles. Lumber frames must be made from species that have naturally high resilience or be dealt with to prevent decay and contortion.
However, this can result in gaps that permit air infiltration unless excellent draught sealing (weather condition removing) is installed. u, PVC is a kind of plastic (unplasticised polyvinyl chloride, also referred to as rigid PVC). u, PVC frames offer outstanding thermal performance, typically much better than lumber or thermally broken aluminium. u, PVC is long enduring and requires very little maintenance, and can be moulded into intricate profiles that offer outstanding air seals.
u, PVC doors and windows have exceptional thermal efficiency Picture: Ben Wrigley (Light Home Architecture and Science) Composite frames use aluminium profiles on the external sections with either a lumber or u, PVC inner section. These combine the low maintenance and resilience of aluminium with much improved thermal efficiency.
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