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Moisture Proofing Sill Plate Near Most Vulnerable Areas

 
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Old 11-24-2018, 07:26 PM   #1
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Moisture Proofing Sill Plate Near Most Vulnerable Areas


Hi,
I am working on finishing a basement and would like to make sure the sill plates are mositure proof especially the ones which are closer to drainage pipes as they are most vulnerable in case if pipes break there.
Any ideas on ways to moisture proof the sill plates from inside,any metallic flashings available in market that will help seal the sill plates before patching with dry wall?appreciate your input

Thanks
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Old 11-24-2018, 07:42 PM   #2
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Are your sill plates below grade?

Why would they be close to footing drains?


















Wait....


What??????



I just re-read your post. Now I"m really confused.

Footing drains? Or just crappy plumbing work, where waste lines routinely break?


I'm not understanding.






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Old 11-24-2018, 08:06 PM   #3
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Maybe he's worried about sills on the floor of new wall framing.

Just use treated and leave an air space behind the wall
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Old 11-24-2018, 08:18 PM   #4
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Quote:
Originally Posted by Tom M View Post
Maybe he's worried about sills on the floor of new wall framing.

Just use treated and leave an air space behind the wall
Apologies if I was not clear, I am talking about the wooden framing that rests on top of the concrete foundation and there is a drainage pipe from kitchen and laundry from the floor above.The drainage pipe can potentially break for many different reasons so I was wondering if it makes sense to somehow waterproof that wooden framing in that particular area where there is a drainage pipe.

Last edited by smit2018; 11-24-2018 at 08:20 PM. Reason: to better articulate the problem statement
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Old 11-24-2018, 08:26 PM   #5
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Don't worry about it. If there were ever a leak to repair, the sill plates would dry out and survive just fine.
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Old 11-24-2018, 08:44 PM   #6
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


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Don't worry about it. If there were ever a leak to repair, the sill plates would dry out and survive just fine.
I am just trying to be overly careful here ,I had a customer friend in the past and unfortunately for him a leak went undetected for almost an year and the wooden framing above the concrete slab in his basement got rotted out due to the incessant water leak,which can potentially create structural issues, so just want to err on the cautious side before finishing the basement.
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Old 11-24-2018, 10:36 PM   #7
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Be careful when you say something like “water proof”. It can get you in trouble!!!
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Old 11-25-2018, 09:16 AM   #8
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Use PT lumber, most PT now is rated with ground contact so you don't have to worry about water either way.
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Old 11-25-2018, 11:04 AM   #9
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


The most cost effective route is using PT lumber. Beyond that you’re probably overthinking it.


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Old 11-25-2018, 11:40 AM   #10
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


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The most cost effective route is using PT lumber. Beyond that you’re probably overthinking it.


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Thanks lumber is already in place,should I replace it with PT lumber?sorry
I am confused.My perception about wood is its like a blotting paper and it can wick moisture quickly during plumbing incidents(I could be wrong here) so I am considering somehow waterproof that area before finishing the basement with drywall.
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Old 11-25-2018, 12:03 PM   #11
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


This is an exercise in futility. Any waterproofing you do will trap any moisture that gets past your barrier.
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Old 11-25-2018, 12:06 PM   #12
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


If you want to replace it all with ground contact rated pt, go for it. Don't forget HDG or stainless fasteners.
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Old 11-25-2018, 02:02 PM   #13
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Re: Moisture Proofing Sill Plate Near Most Vulnerable Areas


Never "trap the RAT of water vapour" in the porous materials, wood, masonry, whatever, the water seeks the path of least resistance, thus leave an wide open exit path whenever possible.

Two water barriers never have a happy ending on the same wall, floor, or roof.

When lapped vapor barriers need to gravity flow to DAYLIGHT(or a sump pump to day light), like a shingle roof.

No porous material between the W.Barriers.

If your are truly anal, jack the house & sill up an 1/8th of inch and insert some metal or plastic vapor barrier on top of the out gassing foundation wall, If there isn't any there.

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