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Old 06-05-2012, 05:17 PM   #1
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Sill Plate Rot in one spot

We are gearing up to put a new deck on our house. So, we jack hammered out our concrete steps up the house and found that the inside had been filled with dirt and was sitting along the sill plate.

There is about 8 inches of rot, that does not appear to have termites or anything. The wood is crumbling on the outside.

We went into the crawl space and the wood there is perfectly intact and strong, so the rot does not go through the wood.

We are just trying to figure out if we could do an epoxy on that portion of the wood, given that we believe we have removed the point of moisture or should we jack up the house and replace the wood?

Thank you for any support that you can provide.


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Old 06-05-2012, 05:32 PM   #2
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You shouldn't have to jack the house up to replace a few inches of rotted sill.

Post a picture or two so we can see what you see for better advice.
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Old 06-05-2012, 06:03 PM   #3
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I don't know the "right" way to do it. But I know what I'd do.
Test the depth of the rot with an ice pick or drill. Cut the rot out from the outside. I'd do this with multiple horizontal passes of a skil saw, using a multimaster (clone) for the vertical cuts at the end. Chisel out the waste. You could do it with a forstner bit and/or router, too. It'll make a heck of a spark if you knick the block/concrete. Cut/rip a piece of 2x to the correct size. Add a squirt of Liquid Nails. Bang it in with a hammer. Add a couple nails. Build your deck.

If the rot isn't under a joist, you could probably just cover it up with the ledger and try to forget about it. (Good luck with that.)

Last edited by ratherbefishing; 06-05-2012 at 06:05 PM.
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Old 06-05-2012, 07:36 PM   #4
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Here is a photo . . . we realize that we haven't taken off the siding to the right and don't know what it looks like under it, but it all looks good from the crawl space and this is exactly where the dirt was sitting up against it (not to the right).

It also might be more like 10 inches. Thank you for the warm welcome to the forum!
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Old 07-19-2012, 12:56 PM   #5
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You can cut out 10" of sill and not have to jack or support anything. Hammer in a new piece. Nail to sill and/or joist and you're good to go. You could treat the area with boracare to stop further rot as long as the moisture problem is solved.
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