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Laminated glass is often used in areas in the house most susceptible to injury from human effect such as restrooms, doors, around staircases and in areas 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 quickly cooled once again. This process makes it much stronger than standard glass it can withstand greater impact loads before breaking. It likewise makes it much safer because, when it does shatter, it breaks into lots of little cubic pieces rather than hazardous shards.
Toughened glass has no thermal or acoustic advantages 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 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, since it is difficult to completely seal the perimeter, but it can supply good noise control. Window movies are a thin polymer movie containing an absorbing dye or reflective metal layer, with an adhesive backing. They stick 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 soaking up and/or showing solar radiation. This can be particularly advantageous in hotter climates where cooling is the primary issue, or on east and west elevations directly exposed to long durations of sunshine. However, window movies may also decrease visible light transmittance.
For this factor, it is generally best to utilize an accredited installer of window movie. Frames have a substantial influence on the thermal efficiency of doors and windows, since energy can be acquired and lost through the frame, in addition to through the glass. Various types of frame will enable different levels of heat gain and loss, so careful choice of frame is crucial for effective passive style.
However, aluminium is likewise a very 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 comprised of 2 aluminium sections linked by a structural insulator (normally a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and decreases the heat streaming through the frame.
They can be expensive, but rates are reducing as they become more common. Wood frames are a good natural insulator that can fit some home styles. Wood frames must be made from species that have naturally high sturdiness or be treated to prevent decay and deformation. Inspect that the lumber is sourced from a sustainably handled forest.
This can result in gaps that allow air seepage unless great draught sealing (weather removing) is set up. u, PVC is a kind of plastic (unplasticised polyvinyl chloride, likewise known as rigid PVC). u, PVC frames offer outstanding thermal efficiency, often better than wood or thermally broken aluminium. u, PVC is long enduring and requires extremely little maintenance, and can be moulded into complex profiles that supply outstanding air seals.
u, PVC windows and doors have exceptional thermal efficiency Photo: Ben Wrigley (Light House Architecture and Science) Composite frames use aluminium profiles on the outer areas with either a lumber or u, PVC inner section. These combine the low maintenance and toughness of aluminium with much improved thermal efficiency.
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