On Jun 1, 11:19?pm, BobK207 wrote:
On Jun 1, 3:45 pm, " wrote:





On Jun 1, 5:33?pm, BobK207 wrote:

On Jun 1, 2:07 pm, professorpaul wrote:

I have used opaque latex stains on decks. Works fine. I have also
gasp painted PT stock with latex paint. In both cases, the wood had
weathered for about a year. Don't know if that makes a difference.

Most PT lumber comes pretty wet from the supplier. ?Paint goes best on
dry wood, un-weathered wood (best adhesion)

so what you got is conflicting ?requirements......PT comes weather,
allowing to "weather" (really alllowing it to dry) gives better
adhesion than wet timber, weathering (UV exposure) degrades surface
wood fibers (reduces adhesion)

Best of all worlds....dry PT stock but good luck finding it ?

Or you could just install wet & let dry...since your porch is covered,
depending on exposure, you might not get much UV exposure.

cheers
Bob

PT wood even stained expands and contracts way too much. After a
couple years it will look HORRIBLE. PT does all sorts of wierd stuff
l;ike barber poll. The treatment makes it much more likely to expand
and contract

Have a family friend who replaced their deck this year because their
dad painted the PT wood. the wood was good physically but appearance
YUK.

Solid stain is a much better choice.

Its my strong belief one day PT will be treated like asbestos with
guys in moon suits taking it away along with the soil under the deck

presently kids shouldnt get under PT wood because the dirt is
contaminated with chemicals.

HB-

Please explain

......The treatment makes it much more likely to expand
and contract ..............

PT treatment can change fundamental behavior of the wood?

Don't get me wrong.....I'm not a fan of PT but my experiment with PT
has been that PT'd DougFir is dimensionally stable but the more
typical HemFir that ships nearly dripping wet, twists & bows as it
dries.

Treaters prefer the HemFir because it treats quicker (at least that's
what I was told)

When used as mud sill & anchored in place it tends to behave itself

OP-

We used to stack & sticker green framing timber (2x's & 4s's) put a
cluster of 20" box fans on the end of the stack & blow air though it
24/7 for a couple weeks to get the moisture content down near 12%
This was indoors in SoCal....YMMV depending on local weather.

PT'd HemFir would really dry qucikly but I's hate to see the resulting
bows & twists. We ordered about 20% extra on our framing materail so
we could dump the un-usable ones.

cheers
Bob- Hide quoted text -

- Show quoted text -

Well seemingly all the PT wood around here FOREVER twists, bends,
expands and contracts a LOT. About 5 years ago I installed a PT wood
railing on some new concrete steps.

The railing went in the fall I waited nearly a year before solid color
staining at the carpenters suggestion. Was ging to sell hoime wanted
everything perfect.

railing split repeatedly, had to stain repeatedly.

told the PT chemicals make the wood less dimensionally stable,
espically in a area with freezing weather