To simply blank a deck, a pressure washing machine with a PSI variety of 2500 to 3000 is ideal

https://blast-wiki.win/index.php/Revitalize_Your_Outdoor_Space:_How_Often_Should_You_Pressure_Wash_Your_Patio_for_Maximum_Curb_Appeal%3F

To properly fresh a deck, a power washer with a PSI differ of 2500 to 3000 is good. This force degree correctly eliminates dust, dust, and mould with no unfavourable the picket