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Laminated glass is often used in areas in the house most susceptible to injury from human impact such as restrooms, doors, around staircases and in areas near to the flooring (it satisfies the requirements of 'safety glass' that is mandated for use in these areas by Australian Standard AS 1288 Glass in structures).
Toughened glass has actually been 'tempered' by being reheated and rapidly cooled once again. This procedure makes it much stronger than basic glass it can withstand greater effect loads before breaking. It also makes it more secure because, when it does shatter, it gets into lots of little cubic pieces rather than harmful fragments.
Toughened glass has no thermal or acoustic benefits 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 within the frame or openable sash with a secondary frame or with magnetic strips.
Secondary glazing will not carry out too thermally as a made IGU, considering that it is difficult to totally seal the perimeter, however it can supply good noise control. Window movies are a thin polymer film consisting of a soaking up color or reflective metal layer, with an adhesive backing. They stick to your glazing to alter its colour or make it reflective.
Applied to existing glass, some window movies can halve the overall SHGC of the window by absorbing and/or reflecting solar radiation. This can be particularly useful in hotter environments where cooling is the main concern, or on east and west elevations straight exposed to long periods of sunlight. Window films may also decrease visible light transmittance.
For this factor, it is generally best to utilize an accredited 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 gained and lost through the frame, as well as through the glass. Different kinds of frame will permit different levels of heat gain and loss, so mindful choice of frame is very important for effective passive design.
Aluminium is also a very great conductor of heat and will reduce the insulating worth of a glazing system, unless particularly crafted to minimize this. A 'thermally broken' frame is made up of 2 aluminium sections connected by a structural insulator (usually a low-conductivity structural polymer). This 'breaks' the thermal connection through the aluminium and minimizes the heat flowing through the frame.
Lumber frames are a good natural insulator that can suit some house styles. Timber frames ought to be made from species that have naturally high resilience or be treated to prevent decay and deformation.
This can result in gaps that allow air seepage 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 provide excellent thermal performance, often better than wood or thermally damaged aluminium. u, PVC is long enduring and requires very little maintenance, and can be moulded into intricate profiles that offer exceptional air seals.
u, PVC doors and windows have outstanding thermal efficiency Image: Ben Wrigley (Light Home Architecture and Science) Composite frames use aluminium profiles on the outer areas with either a lumber or u, PVC inner area. These combine the low upkeep and resilience of aluminium with much enhanced thermal efficiency.
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