When comparing double glazed sash windows to single glazed windows, the main focus is conservation of energy. Sash windows, which consist of two or more separate panels in frames, at least one of which moves, were originally single glazed. However, with the introduction of central heating and utility bills, more efficient double glazed windows are preferred.
The sash type of window, with at least one movable panel to allow opening the interior of the building to the outside air, was invented in the middle of the seventeenth century in England. Before then, most windows were of the casement type, with panels that opened outward on side hinges.
The term glazing technically means the glass itself, although some use it to mean the act of putting the glass in the frame; this is really reglazing, or replacing the glass in a window with new putty to hold it in place. Single glazing is using one sheet of glass in a window or a mutton frame (holds individual panes that make up a sash), while double glazing is using two layers of glass with empty space in between. This inner space usually simply contains air, although some manufacturers will fill the space with gas, such as argon.
The act of double glazing increases the insulating effect of the window, blocking more of the heat transfer through the glass and muffling noise as well. Replacing single glazed windows with double ones may qualify the homeowner for tax credits under government energy saving programs. Keeping summer heat and light out and keeping home heat and air conditioning in is much easier with two sheets of glass (or rigid plastic) with an air space in between.
Other ways of insulating windows include draperies, which can cut the amount of heat and light that enter a home, or the heat and air conditioning that escapes, but block the view and the natural daylight as well. Tinting the glass has the same drawback and only works against sunlight; it does not help to keep hot or cold air from escaping from the inside to the outdoors. There are clear, insulating films that may be applied to the glass, but this is a short term fix.
There are many sites on the Internet with advice on the best way to install double glazing, either with new glass in old windows or by replacing the entire window unit. It is easy to compare products and prices, and to decide whether to attempt this yourself or to hire it done by professional contractors.
In comparing double glazed sash windows to single glazed windows, the main focus is on keeping the inside of a building at a comfortable temperature with less use of costly climate control. A double paned window is far more energy efficient than a single one.
The sash type of window, with at least one movable panel to allow opening the interior of the building to the outside air, was invented in the middle of the seventeenth century in England. Before then, most windows were of the casement type, with panels that opened outward on side hinges.
The term glazing technically means the glass itself, although some use it to mean the act of putting the glass in the frame; this is really reglazing, or replacing the glass in a window with new putty to hold it in place. Single glazing is using one sheet of glass in a window or a mutton frame (holds individual panes that make up a sash), while double glazing is using two layers of glass with empty space in between. This inner space usually simply contains air, although some manufacturers will fill the space with gas, such as argon.
The act of double glazing increases the insulating effect of the window, blocking more of the heat transfer through the glass and muffling noise as well. Replacing single glazed windows with double ones may qualify the homeowner for tax credits under government energy saving programs. Keeping summer heat and light out and keeping home heat and air conditioning in is much easier with two sheets of glass (or rigid plastic) with an air space in between.
Other ways of insulating windows include draperies, which can cut the amount of heat and light that enter a home, or the heat and air conditioning that escapes, but block the view and the natural daylight as well. Tinting the glass has the same drawback and only works against sunlight; it does not help to keep hot or cold air from escaping from the inside to the outdoors. There are clear, insulating films that may be applied to the glass, but this is a short term fix.
There are many sites on the Internet with advice on the best way to install double glazing, either with new glass in old windows or by replacing the entire window unit. It is easy to compare products and prices, and to decide whether to attempt this yourself or to hire it done by professional contractors.
In comparing double glazed sash windows to single glazed windows, the main focus is on keeping the inside of a building at a comfortable temperature with less use of costly climate control. A double paned window is far more energy efficient than a single one.
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The utilization of double glazed sash windows helps to keep energy expenditure at a lower level than you would get with single glazing. Sash windows are historically a great way to promote natural energy efficiency.
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