Sqratch Tools / Site & Planning / Solar Shading Angle
Solar Shading Angle
Calculate the required overhang depth for shading a window based on sun altitude angles.
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Basis & Assumptions
- Calculated using standard 2D profile angle geometry: Overhang Depth = Window Height / tan(Altitude Angle).
- Assumes a flat horizontal overhang exactly at the top of the window.
For quick design checks and study — not a substitute for your local Development Control Regulations, NBC provisions, or a licensed professional's judgement. Always verify against the bye-laws that apply to your site.
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