Sliding Folding Doors Glazing Options
Sliding doors are very popular nowadays especially in the home. The types of door systems available are sliding in line or folding type. Sliding in line doors are mounted on two or three parallel tracks that allow the door panels to slide left or right alongside each other and park to the side. Sliding folding doors consist of a row of door panels connected to each other with hinges and all mounted in a single track. To open the folding door system you simply open the slave door and start pushing. The pushing sliding action will make all of the doors collapse onto each other, concertina style, bunching them together to one side. A useable opening of up to 90% is achievable with this type of door system when in the open position.
No matter what type of sliding doors you plan to install, make sure that the glazing meets with building code. The building code rules for glazing in buildings concerns safety and thermal efficiency. Safety in glass is obviously very important and the rules state that all glass panels between floor level and 800mm above must be safety glass. There are two types of safety glass mainly used. The first is toughened glass. Standard glass is put through a special process that basically hardens the glass. This hardened glass is quite tough to break but if it does, the glass will shatter into small blunt pieces that are relatively harmless and reduce the possibility of injury. The second type is laminated glass. This consists of two panes of standard glass with a layer of plastic film between to form a sandwich. Again quite tough to break but if it does the glass is held in position by the plastic film, preventing large chunks of glass falling out of the frame and causing injury.
Folding sliding doors can often be quite large therefore thermal efficiency is a very important consideration from a heat loss and heat gain point of view. To reduce heat loss double glazing units are installed. The air space between the layers of glass is hermetically sealed, which improves the thermally efficiency of the glass units. In addition, the glass is also coated with a special coating that reflects heat produced internally back inside, keeping the room warm in winter time reducing heating costs. In the summer time when the sun shines, the glass works in reverse by reflecting the suns heat outwards to reduce heat gain.
photo credit: william_hines
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