Typically, retractable awnings must be installed on an even, flat surface. When measuring for the width of your awning, please ensure there are no chimneys, downspouts, light fixtures or other barriers in the way (although extended brackets could be custom-made to bypass obstructions).
Ideally, the width of your awnings should be the same as your deck, patio or existing wall. In cases where the deck or patio's width is very wide (over 24'), it is recommended to partially cover the area or to have more than one awning installed to cover the entire area.
For partial coverage, we suggest that the awning's width should be the width of your window or door (or a combination of both) plus 2 to 3 feet on either side. Please remember that the greater the width, the better shade you will get.
IMPORTANT: The awning's width is the frame's outside dimension, not the fabric's width. The fabric is usually 5 to 6 inches shorter than the frame.
Measure the projection of your patio or deck and select one of the standard awning projections. Projections are available in 5'4", 6'9", 8'8", 10'0", 11'8" and 13'0" (projection sizes can vary slightly depending on the model of awning you choose).
PLEASE NOTE: The projection of a retractable awning is the distance from the wall down the fabric slope to the front bar, not the distance from the wall straight out. For example, installing a 10' projection with a 15° inclination will provide approximately 9'8" horizontal coverage. Therefore, if the horizontal coverage of 10' is crucial in your application, you may want to consider going with the next available size up.
The chart and diagrams to the left show the horizontal coverage and suggested installation height for various awning projections as a function of the awning's inclination.