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amschow
Dirt against wood siding
amschow

Hello,

I just purchased a home and the garage is partially built into a hill. As a result there is dirt up to the 2nd horizontal siding board in the back of the garage. Along the sides the hill slopes down to where the dirt is even with the concrete at the front of the garage.

I know having dirt up against wood siding is bad, so I dug out a trench about 6-8" wide and deep enough to expose 6-8" of the concrete foundation.

What I don't know is what should I fill this with and how deep should I fill it?

Should I look at having more dirt removed, because outside of the 6-8" wide trench the dirt is still at a height even with the 2nd siding board? Maybe make the trench 12" wide?

Do I need to incorporate aluminum flashing somehow to further protect the siding?

Any suggestions would be greatly appreciated!

ed21
Re: Dirt against wood siding
ed21

Remove enough dirt to maintain positive drainage around the garage. A trench at the garage foundation doesn't sound like a good idea. Maintaining a minimum of 6 or 8" is required to help keep termites out of the structure.

A. Spruce
Re: Dirt against wood siding
A. Spruce

Do not fill the trench with anything, do not put anything against the siding, leave the space open for air flow and drainage.

Mastercarpentry
Re: Dirt against wood siding
Mastercarpentry

You can't have anything against the wood, but having a trench there isn't very safe either. I'd install slitted pipe and gravel in the trench creating a "French drain" then add about 4" of dirt on top of that to regrow the grass on. I'd want the top of the dirt at least 2" below the top of the slab and I'd keep an eye on it to be sure that natural run-off silting doesn't raise the soil line.

I'll never cease to be amazed how many people pay no attention to proper grading when they build.

Phil

amschow
Re: Dirt against wood siding
amschow

It looks like I have a lot more digging to do. Thanks!

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