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Paul407 02-12-2011 03:08 PM

Wooden fence
 
1 Attachment(s)
How do I tell if I have a pressure treated fence or cedar fence. I thought it was treated until a buddy told e it may be cedar. Maybe you can tell by this pic. Thanks

Ron6519 02-12-2011 03:30 PM

Pressure treated wood is a hard variety of pine, called southern yellow pine. Cedar is very soft with a subtle grain pattern.
That looks like weathered cedar.
Ron

Paul407 02-12-2011 03:38 PM

Thanks for the info.....I'm thinking it is cedar. Do you know how i could find out for sure?

mrgins 02-12-2011 03:41 PM

scratch 'n sniff.

Paul407 02-12-2011 03:43 PM

I tried. no smell. It is old too.

Ron6519 02-12-2011 04:14 PM

Sand it down to the unweathered layer.
Why do you need to know this?
Ron

Paul407 02-12-2011 04:45 PM

I was thinking about buying planks and making a shadow box type fence in the front.

Paul407 02-12-2011 04:55 PM

3 Attachment(s)
Do these pics help?

Ron6519 02-12-2011 10:04 PM

The sanding was for you to get to the fresh wood. It should smell like cedar if it is.
If you're still not sure, just bring it to the lumberyard with you.
Ron

Phil813 02-13-2011 06:08 AM

It is cedar. Two signs. One the dog ear cut on top of the picket and two they didn't use SS nails you can see the bleed marks where the nails are common mistake when using cedar for fencing.

fungku 02-13-2011 06:13 AM

definitely looks like cedar to me

Thurman 02-13-2011 07:39 AM

FWIW: Pressure treated Southern Yellow Pine fencing pickets with dog ear's cut on the top are readily available at the big box/apron stores here. Generally cedar is not an option here except at one local builder supply center. In S. GA.

Paul407 02-13-2011 08:58 PM

Quote:

Originally Posted by Phil813 (Post 590075)
It is cedar. Two signs. One the dog ear cut on top of the picket and two they didn't use SS nails you can see the bleed marks where the nails are common mistake when using cedar for fencing.

Are the nail stains indicative of cedar?

Ron6519 02-13-2011 10:01 PM

Quote:

Originally Posted by Paul407 (Post 590706)
Are the nail stains indicative of cedar?

There indicative of rust on wood, every wood.
Ron

fungku 02-13-2011 10:37 PM

Quote:

Originally Posted by Paul407 (Post 590706)
Are the nail stains indicative of cedar?

they are generally from a reaction of the metal with the tannins in cedar and leave a black streak from the water running down.

Iron Stains: These stains are in reality extractive stains which results from a chemical reaction between the extractives and iron. Most frequently, iron stains are an inky blue-black color with a distribution dependent upon the type of iron exposure. The color is more intense on some woods, especially redwood, cedar and pine, but can occur to some degree on almost any wood. A striking rust red stain can appear on iron contaminated cedar under humid conditions. This resuIts from a reaction with a major extractive component of cedar called thujaplicin.


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