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Old 09-08-2010, 12:34 PM   #1
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Treated lumber


I am building some steps out of treated lumber in my breezeway. It's not exposed to rain, but it is exposed to snow/rain-covered shoes and boots.

Most likely, the treads will be made of composite decking and just the sides and risers will be treated lumber.

Can I just use outdoor primer and paint? Or any special considerations when using treated?

Thanks.

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Old 09-08-2010, 01:37 PM   #2
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Treated lumber


Treated wood is usually dripping wet unless it has been dried out for months.

ref
http://www.buzzle.com/articles/press...ed-lumber.html
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Old 09-11-2010, 09:33 AM   #3
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Treated lumber


The treated timber will be damp, but if you take the top skin off with a light sand, tehn apply 2 coats of an exterior water based primer at least 24 hours apart this will allow the water based primer to seep into the timber and give a protective layer, once this is done you can apply your top coats as the sealer/ primer that has soaked in will give a good barrier, be sure that you not paint the under sides though as this will create a prison which the moisture can not escape from and it will tend to make your top coats bubble in time.
Hope this is of help
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Old 09-11-2010, 09:43 AM   #4
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Treated lumber


Most everyone I know who have used treated lumber have all sorts of trouble painting it, especially getting the paint to stick, and to stay in place. My neighbor has a PT deck, painted, they have to repaint every year since the paint keeps on flaking off. This is pretty typical. I have a set of PT stairs that I never painted, and guess what, after 20 years it still looks as (good) (bad) as when I put them in. For my money, if you use PT, I would not bother painting it at all.
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Old 09-11-2010, 11:05 AM   #5
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Treated lumber


Sanding wet PT wood will only make a mess and just expose more PT wet wood. It needs to dry ATLEAST 60-90 days to be safe. Latex primer is a joke on bare wood especially PT. It will peel off in no time and bleed like nothing else. Let the wood dry. The best finish you can use is an oil based semi-transparent stain but may not look the best on PT wood. Solid oil stain is still good. At last resort you can paint it put but use an oil baed primer first.
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Old 09-11-2010, 12:51 PM   #6
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Treated lumber


I'd waterproof it now, then later paint it.

“New wood, once dry, should not be allowed to weather. Short-term (4 weeks) weathering prior to application of this product can decrease its service life.” From: http://cabotstain.com/products/produ...od-Primer.html

New wood should be coated as soon as possible to prevent damage
from water absorption and UV. Wash with WEATHER PRO Wood
Cleaner & Brightener to remove slickness (mill glaze) or waxes often
found on new wood. New non-CCA pressure treated lumber should
be treated the same as other new wood even though it may be very
wet. Traditionally such surfaces would be allowed to dry completely
before coating. Because of the wetness, the first application of stain
on pressure treated wood may last only a few months but the option
is to risk severe cracking and splitting as the wood dries if left
unsealed.” From: http://rustoleum.com/cbgimages/docum...gFence_209.pdf


“New pressure-treated lumber requires a six-week drying period prior to application. Water-repellent treated lumber requires one year of weathering prior to application.” From: http://www.nam.sikkens.com/pdf/Cetol..._app_guide.pdf

Used a water-proof treatment: “Convenience
  • One Day Project - Applies to Both Damp or Dry Wood in just one coat.
  • Waterbased: Easy, Soap & Water Clean Up.
  • Low VOC: Low Odor.
New Pressure Treated Wood Application: No waiting while wood can be damaged.” From: http://www.thompsonswaterseal.com/pr....cfm?prod_id=2


Gary

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