I'm going to apply some Sikkens Cedar Stain (which has aa little pigment) to the
section to see if it brings back the original, natural look.
I had a contractor scrub and bleach the deck by hand a year and a half ago, and
great after I re-stained it. Any idea why a year later, the deck floor and rail
dingy grey? Note: There are oak trees overhanding part of the deck and
it directly until early afternoon.
I actually left of the smiley on my first reply. Of course there are
other options to get a non-gray deck. An on-line search will find you
any number of clean-up systems that include a cleaner, brightener, and
sealer. You spray on the cleaner, let it work, and pressure-wash it off.
Then you put on the brightener, which is probably oxalic acid, let it
work, and pressure-wash it off. Finally, you put on the sealer. The
sealer can be either transparent or colored. You'll still have some hint
of gray, though.
If you want the deck to STAY non-gray, you'll have to repeat the process
every two years at least. UV light is most of what causes the graying.
The only way to get rid of the gray completely is to remove the top
surface of the wood. If you want to use a sander, rent a big one.
Cylindrical models designed for hardwood floors would work well, but you
have to make sure all the nails and screws are well below the surface
My belt sander does a quick job on everything it can reach. IIRC, I used 60 grit
On paint, the belts coat up quickly, but on stain or bare wood, it works great.
Even a fast orbital sander would work, but slower.
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