Water resistant canopies include functional rain defense, including welded joints, guttering

https://www.scribd.com/document/1053103178/Arizona-Shade-Structure-Care-Cleansing-Tensioning-and-Assessments-219990

Water resistant canopies include practical rain protection, featuring welded seams, guttering, and downspouts that direct runoff securely far from sidewalks and seating.