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Types of Window Construction, part 2
The function of windows is not as simple as creating a weatherproof view, they also:
- Allow natural light in
- Often allow ventilation
- Have an aesthetic value
- Allow the inhabitant to see outside the building without leaving it, (security)
- Keep cold and sound transference to a minimum while catering for all of the above
The amount of natural light entering a room will be dependent on the windows, size and shape, how it is made, i.e. the number and size of mullions and transoms, it's position in the room and the effects of internal and external reflection.
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Building regulations vary from country to country however a good rule of thumb to use is that the windows for the room must have an opening area of at least 10% of the floor area. This will need to be checked with your local building regulations. Kitchens, bathrooms, wc's and laundries are different again because of odour, moisture and airborne bacteria. They are often required to have a form of mechanical ventilation in lieu of or as well as opening windows. (As with all building projects you must check with your local authority and building regulators before you embark on a job that requires construction rather than decoration. It would pay to employ the services of an architect, draftsperson or engineer to establish the legal parameters). |
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Double-glazing is the most common method of this.
There are various glasses that have beneficial properties
such as Hush glass, and solar control glasses that
control these factors to a degree. A sealed gap
between two sheets of glass forms a system of double-glazing. Ensuring that there is a good seal between the opening part of the window (the sash or casement) and the frame will reduce heat loss and improve sound insulation. Metal or plastic rubberised sealing strips around the rebates of the frame and opening sash will aid in achieving this. Glass companies are constantly improving glass technology and are experts in this field. They are usually more than happy to go over the options available as well as offer brochures and sometimes samples, so if you are recommending or wanting to use double-glazing, contact them. |
In this Section:
Construction Contents | House Insulation - Energy Efficiency | Construction for Interior Design | Proportion & Balance | Home Theater Design | Foundations, the Substrate | Forces on Buildings | Framed Members and Structure | Walls | Openings In Walls | Windows | Glass | Stairs | Sound Control | Ceilings | Creative Ceilings |
Construction Contents | House Insulation - Energy Efficiency | Construction for Interior Design | Proportion & Balance | Home Theater Design | Foundations, the Substrate | Forces on Buildings | Framed Members and Structure | Walls | Openings In Walls | Windows | Glass | Stairs | Sound Control | Ceilings | Creative Ceilings |
