I installed a new pressure treated fence in May and now I'm thinking
about sealing/staining to 1) protect it from water and 2) protect it
from fading too fast from the sun.
Question - what's the best way to go? The reviews on products like
Thompson's Water Seal aren't great and staining the fence is pretty
expensive (it's about 4600 sq ft). Can I just let it go completely?
How long will it last?
Thanks for your insights!
Not familiar with other products but don't like current Thompson's
formulation. Sealant apparently is just wax and only lasts a year but
the stain color will last much longer. I think in order to lower VOC's
stuff I used a couple of years ago could not be sprayed as it clogged
sprayer nozzle and even when painted on with a brush, I could see wax
Doing some simple math, if you get 300 sq ft coverage per gallon,
you'll probably use say 20 gallons of stain. In 5 gal lots it might
work out to $15 a gallon, about $300 in stain. Allow $100 to rent a
sprayer and you'll spend $400. Or maybe $500, hard to predict. Before
committing, it might be prudent to buy one gallon of the best product
tested in Consumer Reports or highly praised in the archives of this
NG, and paint an obscure portion of the fence not visible from the
street. Watch it until this time next year, and then reconsider the
stain project. A good product should last around 3 years or more
according to posts here.
Pressure treated pine is usually guaranteed against decay or insect damage
for twenty years.
It may, however, shrink, warp, or split. That's why you retain a few extra
pickets in the garage as replacements.
If, however, you stain and seal the fence, it will last as much as twenty
My neighbors put up a pressure treated fence and its been arounf 20yrs
with no maint except replacing the occasional warped piece of lumber.
I dont think stain would have prevented any of the prblems.
Did the same a couple of years ago to replace a 30yo cedar fence which
had become decrepit. Unscrewed fence boards section by section after
1 year (to allow for drying) and stained all surfaces with oil based
stain, then reassembled. Teardown of old fence showed most rotting
occured at sections where fence boards met crossbeams. Moisture
accumulated, sat and did its worst. A lot of extra time, but,
couldn't hurt considering the new fence boards are less than half the
thickness of the boards that I tore down.
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