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Old 01-21-2012, 10:51 PM   #1
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Big draft behind vanity


Recently had plumbing work done and he redid the plumbing behind my bathroom vanity...im getting a serious draft coming from this hole, the wall is tiled, so any ideas of a quick fix to stop this draft!? Attached is a picture...

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Old 01-21-2012, 10:59 PM   #2
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Big draft behind vanity


Looks like he used an M80 to make that hole.
First I would go under the house in that area and seal up the holes through the bottom plates with high expanding foam, then about all you can do now is stuff fiberglass insulation in that hole.

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Old 01-21-2012, 11:01 PM   #3
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Originally Posted by joecaption
Looks like he used an M80 to make that hole.
First I would go under the house in that area and seal up the holes through the bottom plates with high expanding foam, then about all you can do now is stuff fiberglass insulation in that hole.
Im on a slab and this bathroom is on my bottom floor
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Old 01-21-2012, 11:03 PM   #4
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Big draft behind vanity


Where does that drain pipe come from and where is it going.
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Old 01-21-2012, 11:06 PM   #5
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Big draft behind vanity


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Where does that drain pipe come from and where is it going.
Comes from upstairs bathroom and runs to the left and out of the house into sewer...to the left outside and behind this wall on otherside is my kitchen
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Old 01-21-2012, 11:07 PM   #6
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Comes from upstairs bathroom and runs to the left and out of the house into sewer...to the left outside and behind this wall on otherside is my kitchen
Im sorry it doesnt go left it goes right into the slab and out
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Old 01-21-2012, 11:19 PM   #7
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Big draft behind vanity


Strange to have a breaze in an inside wall. I'd be looking in the attic around where the vent goes through the top plate for a gap that needs foam around it. The falling cold air from the cold attic may be it.
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Old 01-22-2012, 04:54 AM   #8
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Big draft behind vanity


I just had an energy audit performed and that is the exact spot that I was told to fill with insulation. I was told it is totally normal. I was also told to install safety plugs in unused outlets. Even the ones on inside walls
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Old 01-22-2012, 05:35 AM   #9
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Big draft behind vanity


cold air is just dropping down and hitting the hole slab adds to the temp also.a spray can of foam HD/LOWES start in the back and foam it out go slow cause that stuff expands super fast and sets.old rag stuff in there for now
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Old 01-22-2012, 08:08 AM   #10
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Quote:
Originally Posted by joecaption
Strange to have a breaze in an inside wall. I'd be looking in the attic around where the vent goes through the top plate for a gap that needs foam around it. The falling cold air from the cold attic may be it.
No attic..
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Old 01-22-2012, 08:17 AM   #11
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Big draft behind vanity


Never heard of an energy audit that called for safety plugs in outlets, sure they did not mean foam die cut outlet covers that go behind the covers of outlets and switch covers?
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Old 01-22-2012, 08:19 AM   #12
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Big draft behind vanity


Yeah prob, i put those around my house i have such a drafty cape.
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Old 01-22-2012, 11:38 AM   #13
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cold air is just dropping down and hitting the hole slab adds to the temp also.a spray can of foam HD/LOWES start in the back and foam it out go slow cause that stuff expands super fast and sets.old rag stuff in there for now
I have about 2 ft from slab to where i am foaming, being im in the wall the foam wont sit, any ideas what i can use to prevent the foam from dropping into the wall??
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Old 01-22-2012, 12:15 PM   #14
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Joe: both the foam backs and the baby covers will work
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Old 01-22-2012, 03:54 PM   #15
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Spray foam is now my new best friend.

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