To properly fresh a deck, a force washer with a PSI number of 2500 to 3000 is right

https://fast-wiki.win/index.php/Revitalize_Your_Outdoor_Space:_How_Often_Should_You_Pressure_Wash_Your_Patio_for_Maximum_Curb_Appeal%3F_20678

To appropriately blank a deck, a strain washing machine with a PSI stove of 2500 to 3000 is perfect. This strain stage effectively gets rid of dust, dirt, and mildew without unsafe the wood