[soapwarehouse]

There is a difference. A deck wash is just to remove the surface dirt that may or not be effecting the deck color. You can use a mild soap or even a percarbonate to just lift up the surface dirt, do not use high pressure to damage the wood to bring the natural wood color out. But if what they realy want is to take the fadded color back to original to then seal or stain it you need more than a wash especially if there is left over old stain and sealer on the wood. Then you need a stripper and a neutrailzer to get the wood ready to be sealed or stained again. Again you let the chemicals do the work not pressure that will cause wood damage and a raised grain.