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Rotten Corner Post

nzrossco | Posted in Construction Techniques on January 22, 2012 08:54am

Hi,

I have a Californian Bungalow and when I was investigating a couple of rotten weatherboards on the right front corner of the house I discovered the rot had extended into the corner post.

The first 3-4 feet of the corner post, 4 x 2, is affected. The post sits directly on the foundation, the first stud on the right hand side is 8″ from the corner post and on the left had sidethe first stud is 16″ from the corner. These all sit on on the bottom plate that appears OK.

I am proposing to make two rectangular box sections to sit inside both these bays, screw and nail these to the existing studs and the remaining bit of corner post.

The rotten bit of post to be replaced by a new 3 foot length, nailed and screwed to the 2 new corner posts.

Is this a cunning plan or is there a better way?

Thanks

 

Ross

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  1. calvin | Jan 22, 2012 09:00pm | #1

    nz

    the end grain of this post sitting on the foundation, sucking up moisture, is probably what did it in.  The siding helped it along and paid the price.

    What caused it?  Moisture from above, not permitted to dry out below?

    Water entry from foundation being sucked up?

    Stupid irrigation aim-soaking it every day?

    Your fix is fine I guess, but replacing the damaged area with scabs up both sides to tie it to the rest of the post, will suffice.

    Sill sealer, treated plate anchored to the foundation, check drainage and possible penetration above-call it done.  The box will do little to keep it in position.

    1. nzrossco | Jan 22, 2012 09:23pm | #2

      Hi Calvin,

      Thanks for the promt reply, the previous owner had replaced a couple lengths of siding and perhaps not done a good job on the corner, so moisture from the weather mainly got in. It is on the south side exposed to gales .

      Perhaps replacing the whole corner stud would be the better option?

      1. calvin | Jan 22, 2012 10:19pm | #3

        nz

        Replacing the corner post would be an option, but.............

        Is it necessary to weatherproof the corner?

        Is it too invasive, messing with the siding (and sheeting?)

        For strength, usually a plywood sheeting is required at the corners or a let in diagonal metal brace or even let in 1x4.  In that case, perhaps replacement and perhaps redoing a plywood corner.  If there's let in bracing-why bother-cut in the replacement and overlap both sides. 

        Of course, the inspector knows best.

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