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Old 04-21-2008, 11:23 PM   #1
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siding repair

I am trying to fix my siding. As you see on the attached pictures
there is some rot underneath the existing siding. What would be the
best way to handle it ?
When I poke the knife in the rotten part it seems solid after I go ½”

1. take the existing panels and put new hardie panels and just cover
it ?
2. take the existing panels out, treat the mold with some KILLZ and
then 1 ?
3. mess with 2X4 and replace them ?

I plan to stay in my place for a few years. I already put some hardie
trim 1X4 on the other side of the siding. I did not discover any
deterioration of the siding (under rotten previous 1X4 wooden trim) so
I assumed there is nothing going on underneath.

I really welcome any suggestions you guys might have – thanks


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Old 04-22-2008, 06:26 AM   #2
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siding repair

I would cut the siding about a foot above the rot to expose the wood under it. If the bottom plate and studs and possibly another sheathing under the siding is good, spray with a mold killer, allow to dry. Replace or sister in new studs if need be. Install new sheathing to bring wall thickness back to original. I would put some type of house wrap over the existing wall before applying new siding. That would be the easy way for me. Some would propose taking off the entire siding, installing approved sheathing, installing house wrap and then new siding.

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Old 04-22-2008, 06:29 AM   #3
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Location: New England
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siding repair

Step 1 - Find out why you are having rot issues under the window. Chances are, it's the window. Address that first.
As far as the other area, you need to address a method of repair/replacement, so that the area does not rot again.
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Old 04-22-2008, 07:08 AM   #4
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siding repair

what's the scenario if I just cover the problem and not replace the rotten wood but just treat it with some bleach. will the rot grow inside and eat into other 2X4s ? thanks ...just trying to evaluate total risk here ;-)
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Old 04-22-2008, 07:39 AM   #5
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siding repair

Bleach will kill mold and such, but won't stop the wood from softening. You definately need to determine the reason for the water infiltration first, and then replace all affected siding, sheathing, and framing. Even if you could stop the water problem, the soft wood problem needs to be taken care of.
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