Shopdog wrote:
The problem with pressure washing is that if the pressure is too high, or
the person doing the washing gets the wand too close you get a corduroy
effect. So yes lifting the grain can happen. I pressure wash as part of my
business and I make damn sure that my pressure is at 2000 and I don't hold
the wans too close or in one spot too long. It takes getting used to because
if you don't have enough pressure or if you don't get close enough then you
are wasting time and water! My best suggestion is that if you are not
comfortable having this friend do the job then have a professional do it. I
am no pressure washing guru or anything, I just had the chance to learn. I
have cut wood and I have and severly marked wood from a pressure washer. I
even took some paint off my truck! It takes practice and patience.

Searcher


I've seen pressure washers cut stucco and erode concrete. I would
prefer, if it doesn't lead to more rapid deterioration, just to allow
the wood to weather. The finish the OP indicated calls for cleaning
with particular products, pressure wash and sanding. Sanding is
something I strenuously avoid )

Our condo dock was pressure washed and it grew "fuzz", and a few
splinters, and shows no protection from the so-called sealer that was
put on it. If a deck is in a shady spot, it might get moldy and
slippery without any protection?