Garage Sill Plate Set Directly On Slab. Raise The Garage? - Building & Construction - DIY Chatroom Home Improvement Forum

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Old 07-05-2016, 07:37 AM   #1
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Garage sill plate set directly on slab. Raise the garage?

Hey everyone,

My garage was built with the 2x4 sill set directly on the monolithic slab. When I weed whack the vinyl siding is getting chewed up, and I know when it rains there's moisture the sill is resting on and soaking in.

Any suggestions for this?

All I can think of is raising the garage and building a 1 or 1 block wall around the perimeter of the slab.



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Old 07-05-2016, 07:50 AM   #2
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Re: Garage sill plate set directly on slab. Raise the garage?

The yard should have been graded with the garage area a few inches higher than the surrounding yard.

How about adding a walkway around the garage with the required grading, this allows water to run away, and keeps weeds from growing next to it.



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Old 07-05-2016, 07:51 AM   #3
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Re: Garage sill plate set directly on slab. Raise the garage?

How much work you willing to do to fix this?
One sort of simple way is to remove the three bottom rows of siding, remove and replace any rotted sheathing making sure none of it is below grade.
Water proof the sheathing with Storm and Ice Shield, then Install 5/4 X 8" PVC lumber with Z molding over the top of it them J molding.
If you set the PVC at the right height it will run past the slab at least 1" and the siding will not have to be ripped.
I premark where the bottom lap falls on the outside corners then install the PVC about 1/4 to 3/8" below that to have room for the Z and J molding.
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