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Sonya Awning April 06th, 2018 - 12:07:50
There are dozens of styles of retractable awnings, determined mainly by the frame shape: Lateral arm awning - the most common, and oldest, retractable awning style, consisting simply of two or more arms, the front bar, mounting bar and the fabric. This is the most popular style for homes and commercial buildings; this is also the most scalable style, extending (projecting) as far as 17 feet without external supports. Dome - an awning with curved ribs, which forms a rounded shape when fully extended; these tend to have a significantly shorter extension (projection) than lateral arm awnings, extending only about five feet out maximum from the mount point. An elongated dome can have a longer projection than a standard dome style, almost double. Dome awnings are common for commercial properties and for window and door awnings. Drop screen - a kind of retractable awning which is mounted vertically so it extends downward. This style of awning has the mounting bar and fabric, but no arms since it simply "drops" down. This is mainly used to screen patios, gazebos, and other outdoor areas from glare, heat, rain, UV rays, direct sun, mosquitoes, and pollen.
PVC - a hard polymer also used to make plumbing pipes; this tends to be brittle. Kevlar® - the polymer used to make bulletproof vests; Kevlar® straps in the arms instead of cables are extremely strong and durable and cant rust. Cables - braided metal strands which are used in the arms; these are usually steel, which rusts, leading the cables to discolor the fabric and eventually break. Cables cannot be replaced because they are internal to the arm and inaccessible. Terms: Installation Understanding a few terms about the positioning and installation of the awning can help determine the appropriate size and installation location for your awning: o Mount - what way or location the awning is affixed to the home or building, such as a wall mount, eave mount, soffit, or roof mount. Pitch - the angle that the awning comes down from the mount point to the front bar. Some lateral arm retractable awnings have an adjustable pitch. Projection - how far out from the wall the awning can extend. Load - the stress put on the awning, from wind, snow, even the weight of the awning itself (dead load). Good quality retractable awnings can sustain wind speeds up to approximately 35mph Pooling - water buildup on the canopy which can cause the fabric to sag and stretch.
Longevity. Fixed awnings have a fabric lifetime of five years or less because of constant exposure to the sun, snow, rain, and wind, all of which can fade or tear the fabric. Retractable awnings have a huge advantage in being able to retract - the fabric can be protected in adverse weather conditions. Combined with options like a motor and sensors (for light, wind, rain, and motion), the awning can be closed automatically in conditions which would normally damage the fabric or frame. Retracting the awning when its not in use, like on shady or cold days, cuts down on sun damage to the fabric from UV exposure. With a retractable awning, the average lifetime for the fabric is 15 years - three times better than a fixed awning. Since retractable awning frames have warranties of up to 25 years and motors have warranties up to 5 years, motorized retractable awnings offer a really excellent cost investment.
Different Reasons for Using Awnings Various factors have come into play for why Europe has, for nearly a century, been consistently integrating retractable awnings into architectural plans. Many of the initial reasons were cultural; prevalent open air markets had contributed to a long history of fixed awning use, so it was a natural transition to easier to use and longer-lasting retractable awnings. More practically, though, the widespread use of retractable awnings comes down to cooling and energy efficiency. Europe has very high energy costs and, because of many old homes and flats, most residences do not have air-conditioning systems installed. Therefore, European homeowners have had an imperative to find inexpensive, effective cooling and efficiency products - and one of the most effective methods for controlling interior heat is retractable awnings.