Rotten porch oak pillar

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Hello

any advise on how to repair those pillar's and prevent future damage ? they are solid oak but are rotting from the bottom up.

I was thinking of putting some acrow's then cutting the pillars where the rot is and dig up a hole and fill with concrete and use something like this ? there's also other options like this ?

never done anything like this so not sure if this is the best way to do it or if I'm over complicating it.

your help and advice is much appreciated :)
 

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Is it structural or for appearance?

Dropping it into a shoe may make the problem worse if the water pools around the base, and you will still have the rot. Best to cut out the rot, treat the base, and sit it on a stone plinth that slopes around the edges for the water run off.

As a bodge you could bolt some thick steel either side to take the weight, then drill out the rot, you might be able to make a feature of it

Blup
 
Posts should be stood on a flat surface with a sheet of lead between slab and post. The lead is then trimmed to the size of the post. The lead was trimmed after the photo was taken. The house was built in 1980, the posts are still in good condition.

upload_2022-3-9_9-30-30.png


What may work for you is to support the roof with temporary supports, remove the damaged timber and replace with a brick pillar or replacement timber.
 
Have you pushed a thin nail into the post? It could just be the surface thats rotten. 10mm in, it could be tough as old boots.

I see the noggin of wood to the side is rotten. As Bernard suggested the detail is wrong on your posts.
 
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