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Using non PT posts in ground?

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Forum topic by LearningAsIGo posted 342 days ago 898 views 0 times favorited 19 replies Add to Favorites Watch
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LearningAsIGo

38 posts in 1231 days


342 days ago

I need to fence off my garden to keep the dogs out and I was given some 4×4 hardwood posts recently for free. I’m pretty sure that they are not pressure treated. I’m trying to do this as cheaply as possible but I would prefer that it last longer than a season. My solution to fencing it off would be to just attach some 2×2’s to the posts as a top and bottom rail and staple poultry netting to them.

How long do you think they would last in the ground and can I do anything to prolong their life? I have heard of using roofing tar or Thompson’s water seal. Is it better to cement them in the ground to keep bugs away?


19 replies so far

View mporter's profile

mporter

214 posts in 1173 days


#1 posted 342 days ago

They will last about a year. Two max. I don’t know the name of the product or if it’s even legal anymore, but farmers will dip post in a creosote like product before they bury fence posts. It may be cheaper and easier to but PT wood.

View Dallas's profile

Dallas

2854 posts in 1082 days


#2 posted 342 days ago

pour concrete footers, use a post anchor, it keeps the post off the concrete and the ground. Your posts will last 10-15 years usually.

I don’t use the cheap PT posts from the home centers anymore. We installed 32 new power pedestals on 6X6 pt posts and they were warped horribly within a week.
I now spend a couple dollars more and order cedar.
It ended up a lot cheaper than fixining all those posts.

-- Improvise.... Adapt...... Overcome!

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a1Jim

111999 posts in 2172 days


#3 posted 342 days ago

Some post will last a long time in the ground like White oak,cedar or southern yellow pine ,but if your not sure what your post are I’d go with Dallas suggestion.

-- http://artisticwoodstudio.com Custom furniture

View Earlextech's profile

Earlextech

898 posts in 1285 days


#4 posted 342 days ago

http://www.cuprinol.com/

This product will add years to the life of an in ground post, PT or not.

-- Sam Hamory - The project is never finished until its "finished"!

View Don W's profile

Don W

14574 posts in 1162 days


#5 posted 342 days ago

it depends on what kind of hardwood. Growing up on the farm all of the fence post where driven directly into the ground. Some locust and white oak may out last you. Red oak would be 2 years tops. Poplar may not get you till fall.

-- Master hand plane hoarder. - http://timetestedtools.com

View crank49's profile

crank49

3333 posts in 1566 days


#6 posted 342 days ago

TimBor or Cuprinol. Stand post in bucket containing solution.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View LearningAsIGo's profile

LearningAsIGo

38 posts in 1231 days


#7 posted 342 days ago

I’m not really sure what kind of wood the posts are.

I thought that the only wood that will last in-ground is pressure treated? I didn’t know you can put cedar in the ground? I thought about getting post anchors but looks like that will cost about as much as buying new pressure treated posts.

View GNP's profile

GNP

12 posts in 1097 days


#8 posted 342 days ago

I would try to find out what type of hardwood it is, and go from there. Folks were putting wooden posts in the ground for thousands of years, before pressure treated was invented. Around here black locust is a favorite.

View Don W's profile

Don W

14574 posts in 1162 days


#9 posted 342 days ago

My dad had two locust gate post he put in the barn yard before he went into the service in 1945. They were still holding the gate when he sold the farm a few years ago. The only way you could get a fence staple into them was find a split close to where you wanted the wire.

-- Master hand plane hoarder. - http://timetestedtools.com

View JayT's profile

JayT

2072 posts in 806 days


#10 posted 342 days ago

You can go out of town here to farms and ranches and find hedge wood (Osage Orange) fence posts that the grandfather of the current 70 year old owner installed when he homesteaded the place. Hardwoods like locust and hedge that are naturally insect and rot resistant will outlast any pressure treated softwood.

-- "The American Republic will endure until the day Congress discovers that it can bribe the public with the public's money." Alexis de Tocqueville, 1835

View waho6o9's profile

waho6o9

4744 posts in 1172 days


#11 posted 342 days ago

http://www.graservices.com/products/secureSet/
https://www.youtube.com/watch?v=ysNxHt3JSGo

Secure set doesn’t absorb moisture when it rains. Concrete does
and that’s why the bottom of the posts rot out.

HTH

View IrreverentJack's profile

IrreverentJack

724 posts in 1438 days


#12 posted 342 days ago

How big are your dogs? Here's one that looks stronger -Jack

View watermark's profile

watermark

394 posts in 537 days


#13 posted 342 days ago

Concrete footings would be your best bet but Henry’s roofing tar does the trick too. Just go a few inches higher on the post then you plan to bury. Watch out for underground utilities when you dig too.

-- "He who has no dog, hunts with a cat" Portuguese proverb

View bondogaposis's profile

bondogaposis

2429 posts in 946 days


#14 posted 342 days ago

Depends where you live, Arizona, maybe last a long time, Virginia, not so much.

-- Bondo Gaposis

View CharlesA's profile

CharlesA

1016 posts in 392 days


#15 posted 342 days ago

Next time I need to do this, I’m buying black locust from the local sawmill here. Will last for decades.

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