I washed mine with a strong clorox solution to get rid of the mold (I just
used a mop, and rinsed with a garden hose), and then re-stained it. The
clorox takes off the black stuff (mildew) quite well. However, it's a pain
to clean the railings (I imagine it's a pain with a pressure washer too).


"BKS" wrote in message
news:P19Ta.119855$H17.36921@sccrnsc02...
I built a completely pressure treated deck five years ago and stained with
Sikkens. It's on the north side of the house and now is very dirty---some
black spots (mold, I guess) on the rails, etc.

What's the best way to clean this without damaging the wood or stain (the
stain is holding up very well). I've been told pressure washing is too
tough
and a no-no with pressure treated. TSP? Some of those deck
cleaner/brightener products?

Thanks.