I have a shed that sits on a concrete slab. There was some miscommunication between the contractor and I when the grading was done and foundation and slab was poured and so the bottom of the siding (T-111 plywood) sits too close to the ground. Rains splash the bottom and over the years the plywood is rotting away. It's time to do something about it but I'm not sure what.
I don't like the idea of replacing all of the sheets in their entirety when only the bottom 5 - 7" are damaged. I found this page: Reparing siding link which shows cutting the damaged sections out and replacing with a piece of Z flashing and then more siding.
This seems ok but predestined to rot again in time. Is there a better way? I am thinking instead of cutting out the damaged section and replacing with a piece of the largest 1 or 2 x treated material I can find. Is this a good/bad idea? Not sure how to make it line up at the joining of the siding and lumber so that water doesn't wick back up into the siding.
Replacing it with a piece of PT wood is not a bad idea. I'd go ahead and use the Z-flashing to transition from the T1-11 to the PT wood and I'd prime and paint the newly cut edge of the T1-11. IF the PT wood is dry, I'd probably prime the back and bottom edge before I installed it. Another more expensive option would be to use Azek cellular PVC instead of any kind of wood.
Any advice given here is general in nature and is not necessarily valid for your given area. If in doubt check with your local codes enforcement department for what is required when doing electrical, plumbing or structural work on your house. Permits may or may not be required in your area and home owners may not be able to DIY some tasks. I have no way of knowing if you have the skills needed to complete the tasks you are asking about, when in doubt seek professional assistance.
My advice may be worth exactly what you pay me for it. :-) For the record I did not stay in a Holiday Inn Express last night.
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