What's the best pitch roof for a home in long island new york
There are many online calculators for this. Slotting in your latitude gives an ideal angle from vertical as follows:-
Winter 26; Spring/Fall 49 and Summer 72.
If you are simply going for the best annual yield then a figure somewhere between the Spring and Summer angle would work.
The actual angle is not that critical as the yield generally drops off on a cosine rule and then only really when dealing with direct sunlight. It is even less critical with diffuse light (cloudy / hazy days).
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