TL;DR
The deck wash fan pattern is the wide spray geometry, a 25 or 40 degree tip, or a dedicated low-pressure setting, used when pressure washing wood decking so water sweeps across the surface instead of gouging it. The operator works parallel to the grain in long overlapping passes, keeping the nozzle 12 to 18 inches off the boards, because a narrow jet up close raises fuzz, cuts wand stripes, and erodes springwood.
What it means
The deck wash fan pattern is the wide spray geometry, a 25 or 40 degree tip, or a dedicated low-pressure setting, used when pressure washing wood decking so water sweeps across the surface instead of gouging it. The operator works parallel to the grain in long overlapping passes, keeping the nozzle 12 to 18 inches off the boards, because a narrow jet up close raises fuzz, cuts wand stripes, and erodes springwood. Softwoods like cedar tolerate only 500 to 1,200 PSI, which is why pros pair the wide tip with a cleaner and let chemistry do most of the work.
Where it sits in the glossary
Deck wash fan pattern is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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