Length and angle of awning to block sun in summer and let it through during winter? - GreenBuildingAdvisor

Length and angle of awning to block sun in summer and let it through during winter? drewfridley7 | Posted in Energy Efficiency and Durability on March 23, 2026 06:19pm I want an awning to allow sun in during the winter and block it during the summer. Is there an online calculator where I can put in my latitude and longitude and it will tell me the length and degree at which to building an awning for my windows? I assume the height of the windows matter as well? I plan to plant fruit trees 10-15 feet from my house to eventually do this but I’d like to have the awnings in the interim 4-5 years. Answer GBA Detail Library A collection of one thousand construction details organized by climate and house part Search and download construction details Join the leading community of building science experts Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field. Start free trial Related Questions Stratton Bracket for mounting awning ledger over 2" cork facade? Pacific NW Wall, Roof, and Awning Questions for Backyard Studio Under Construction (plywood, rockwool, cork exterior) Looking for a simple deck and awning tutorial Replies gusfhb | Mar 23, 2026 06:43pm | #1 there are old school graphs for date/latitude/solar angle. https://gml.noaa.gov/grad/solcalc/azel.html seems to be the calulator you seek. Expert Member DCcontrarian | Mar 23, 2026 06:56pm | #2 Today is the perfect day to ask that question, because ...