IMO unless the held nozzle there there would be little water enter and if did it would quickly evaporate due to heat attic as long as had wide angle spry nozzle? IMO as long as had wide fan nozzle and didn’t stop in one spot and kept swiping motion little would enter? When I pressure wash my house I use wide pattern and keep nozzle couple feet away from house and rarely spray soffits. If soffit still dirty I use windex and rag like I do on eve drains.
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