To without problems blank a deck, a stress washer with a PSI selection of 2500 to 3000 is right
https://wiki-book.win/index.php/Understanding_Pressure_Washer_Efficiency:_How_Many_Gallons_Per_Minute_Do_You_Really_Need%3F
To with no trouble smooth a deck, a power washer with a PSI variety of 2500 to 3000 is perfect. This stress point correctly gets rid of dirt, grime, and mould with no unfavorable the timber