Redwood is in itself a long lasting wood in that it contains phenol .
To keep the color I would say use stain. Here is a bit of info for you.
In certain areas if you put redwood post in the ground there is a
fungus that will eat the post off at ground level in a very short time
, from about two years. This is true in Florida particular. The post
only deterates right at ground level.
Thompson's is junk. all it is wax and mineral sprits and it
does not last more than 6 months if that. A good brand of
stain would do the trick for you and then every year or so a
GOOD wood sealer
treat the wood
look for as
Very difficult to do without lots of effort. Many people
give up and
use a solid-body stain.
Looks like Thompson's is out and it's down to Penofin or Behr's clear
Premium Weatherproofing Wood Finish. Just discovered I had saved a post
of a couple years back on the latter and it was highly recomended.
Thompson's is about the worst product I could recommend for repelling water.
I've never had any luck with it and have just written it off my list of
possibilities when it comes to preserving wood. The gray comes from
exposure to UV light. Whatever you put on it, will have to have UV
blockers in it to prevent the gray. Staining works pretty well as the
pigments in stain also serve, to some degree, as UV blockers. I'd look for
a good deck or outdoor treatment that has UV blockers in it. That said,
the best stuff I've used is Penofin. Unfortunately, there is no clear
Penofin although their Cedar color is pretty close.
Keep in mind that whatever you do will still require some maintenance.
Penofin for instance, recommends recoating every few years (I forget the
exact timeframe). I put it on a cabin in the high mountains here in NM (a
fair amount of moisture, cold, sun) about 4 years ago and it still looks
great. Unfortunately, there is no sealer/stain that will last a lifetime!
On Mon, 12 Dec 2005 22:09:33 -0700, "James \\"Cubby\\" Culbertson"
I have had excellent results with Thompsons. I treated a homemade
canvas tent that leaked like a sieve with Thompsons. 15 years later
that tent is still leakproof. I painted an entire brick building with
it, because the brick was starting to chip off the surface in some
places. The flaking stopped (although I have not been there in
several years now), and two years ago I painted my plywood sided
garage with Thompsons solid stain, and it has held up very well.
(This is just plain inexpensive 1/2" plywood for siding. I have been
very pleased with their products.
I've had good results with Flood clear with UV protection, but we do
recoat every two or three years.
I think making certain their is no dirt/wood contact is also essential.
My son just had a fence redone in California and they just drove wood
posts into the ground; I doubt it will last.
LOL, guaranteed it won't last, (I'm in Los Angeles). I have 2 X 4's
attached to 1 7/8" dia metal posts with the redwood planks attached to
the 2 X 4's with clearance of about an inch on the bottom for the redwood.
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