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Laminated glass is frequently used in locations in the home most vulnerable to injury from human impact such as restrooms, doors, around staircases and in areas near the flooring (it satisfies the requirements of 'shatterproof glass' that is mandated for use in these locations by Australian Basic AS 1288 Glass in structures).
Toughened glass has been 'tempered' by being reheated and rapidly cooled again. This procedure makes it much stronger than basic glass it can withstand higher impact loads prior to breaking. It also makes it more secure since, when it does shatter, it breaks into many little cubic pieces instead of unsafe fragments.
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 perform too thermally as a produced IGU, given that it is difficult to completely seal the boundary, however it can offer good noise control. Window films are a thin polymer movie consisting of a soaking up color 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 cut in half the total SHGC of the window by absorbing and/or showing solar radiation. This can be particularly advantageous in hotter climates where cooling is the primary concern, or on east and west elevations directly exposed to long periods of sunshine. Nevertheless, window movies may also reduce visible light transmittance.
For this reason, it is generally best to use a recognized installer of window film. Frames have a substantial effect on the thermal efficiency of doors and windows, due to the fact that energy can be gotten and lost through the frame, as well as through the glass. Various types of frame will allow various levels of heat gain and loss, so careful option of frame is necessary for efficient passive design.
Aluminium is also an extremely excellent conductor of heat and will reduce the insulating worth of a glazing unit, unless specifically engineered to decrease 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 reduces the heat streaming through the frame.
They can be costly, however costs are decreasing as they end up being more typical. Timber frames are a great natural insulator that can suit some house styles. Wood frames should be made from species that have naturally high sturdiness or be treated to prevent decay and contortion. Check that the wood is sourced from a sustainably handled forest.
However, this can lead to spaces that enable air infiltration unless excellent draught sealing (weather stripping) is set up. u, PVC is a type of plastic (unplasticised polyvinyl chloride, also known as rigid PVC). u, PVC frames provide outstanding thermal efficiency, typically better than timber or thermally damaged aluminium. u, PVC is long enduring and needs really little maintenance, and can be moulded into intricate profiles that offer excellent air seals.
u, PVC windows and doors have excellent thermal performance Image: Ben Wrigley (Light Home Architecture and Science) Composite frames use aluminium profiles on the outer sections with either a lumber or u, PVC inner section. These integrate the low upkeep and durability of aluminium with much improved thermal performance.
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