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JoeSchmo
Sunken Trellis
JoeSchmo

Recently, I had my patio mudjacked because it was sloping toward the house. A trellis I have next to the patio has also sunk over the years on the side near the house. I'm thinking about cutting the post of the side of the trellis near the house about 4 inches from the foundation and adding a block of the same material to bring it back up to level. It's about 3 inches of material that would need to be added to bring it to level. Does this sound crazy? Is there a better way?

A. Spruce
Re: Sunken Trellis
A. Spruce

If you cut a wood post you will lose all structural integrity of the post. The best option would be post replacement, if you want to extend the post you have, make the cut 18" - 24" up from the ground, add your block, then box the post with 1x material from ground to top. Box in the other post to keep the symmetry.

dj1
Re: Sunken Trellis
dj1

Another vote to replace the post. We do it all the time.

This time, have the post rest on something that won't sink.

JoeSchmo
Re: Sunken Trellis
JoeSchmo

Thanks for the input. Here's some more details: The trellis is a privacy screen. It's 2 posts with 6 feet of board on board fencing in-between and some lattice on top. If I do cut the sunken post, add a block to bring it to level, and surround by 1-by, will the integrity be compromised to the point that it couldn't support the fencing in the middle?

A. Spruce
Re: Sunken Trellis
A. Spruce

To be clear, if you cut off a post, you will lose all structural integrity. The 1x wrap will give you some of it back, but not nearly as much as a new, undamaged post.

Whether or not the 1x will be strong enough will depend on how much wind you have in your area and whether or not animals or plants put additional stress on the post. If the post is fully on your property and does not impinge on your perimeter fence or neighbor, go ahead and try extending and patching with 1x. If the post is shared in the fence or by the neighbor, replace it with a longer post.

dj1
Re: Sunken Trellis
dj1

What spruce said.

It's all up to what you use it for.

No load bearing - your repair will be OK.
Property line fence - not good.
Free standing - not good.

I have done repairs like this before, following the above guidelines. One example was a rotten wooden mail box post. Another example was a post that was attached to the building. Except for minor irregularities in looks, they were acceptable.

JoeSchmo
Re: Sunken Trellis
JoeSchmo

Thanks for your advice. I decided against cutting the post. I disassembled the trellis fence and rebuilt it level, adding material to the top which is covered by a cap.

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