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Basement Rim-joist meets bottom plate of slab addition; how to weather proof?

Basement Rim-joist meets bottom plate of slab addition; how to weather proof?

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  #1  
Old 07-28-17, 10:45 PM
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Basement Rim-joist meets bottom plate of slab addition; how to weather proof?

Hello,


I'm working my way around the house replacing the old Homasote with plywood sheathing before installing the new siding.
Where the section of the house with a basement meets the section on a slab, it looks like more could have been done to make the bottom plate more weather proof.

Here's picture of the section I'm talking about:
Name:  Basement-meets-slab.jpg
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Size:  25.3 KB

There is no foam or gasket under the bottom plate on the slab (right side of the picture). The 2x4 plate is a little soft on the surface, but the softness is not deep, so it is not rotted yet. I've been in the house for about 25 years and I know that the addition was not new when we moved in, so, all things considered, it's holding up pretty well. Before I close it up though, I want to do what I can to make the area as weather proof as possible.
On the slab side, I'm thinking of using pressure treated plywood at the very bottom; at least to the height of the rim-joist on the basement side.

Any suggestions would be appreciated.

Thanks in advance.
 
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  #2  
Old 07-29-17, 03:48 AM
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I would probably seal the plate with some PL. Then cover the sheathing and rim with a WRB that extends 1" over the foundation.
 
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Old 07-29-17, 08:05 AM
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Thanks @XSleeper.
This stuff?
Name:  PL-Premium.jpg
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Old 07-29-17, 08:09 AM
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Sure, that or PL200, PL375, PL400.
 
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