DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Insulation and Radiant Barriers > Thick Black plastic on basement ceiling




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Old 02-20-2012, 11:36 AM  
Dcomer
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Default Thick Black plastic on basement ceiling

Hi, I searched through google and this site and many others for several hours and couldn't find any answers. My question is this. I bought my house 6 years ago and down in the unfinished basement there is very thick black plastic installed on the ceilings. There is no insulation above the plastic. What is it's purpose and if I wanted to finish the ceilings would I just put drywall right over the top of it?

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Dcomer



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Old 02-20-2012, 03:37 PM  
oldognewtrick
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Could you provide some pics of the ceiling, walls and floor?

Oh, and to House Repair Talk!



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Old 02-20-2012, 03:57 PM  
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Quote:
Originally Posted by oldog/newtrick View Post
Could you provide some pics of the ceiling, walls and floor?

Oh, and to House Repair Talk!
Thank you for the warm welcome. I will post some pics later this evening
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Old 02-20-2012, 04:11 PM  
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I saw that once on a farmhouse. The basement was damp, and I think the owner was trying to block the moisture from entering the house. It didn't work - the black plastic was covered with nasty mold and the new owner had to rip it all out and fix the moisture problem in the basement.

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Old 02-20-2012, 05:27 PM  
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Evan with a damp or cold basement, this is not the place for a vapour bearer. I can't see it will do any good.

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Old 02-20-2012, 07:21 PM  
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Still havent gotten around to taking pictures. The basement is dry and the only thing I could think was that it was to block cold air. The basement isn't any colder than any other normal basement. Speaking of, there is a register down there and I have kept it closed. Is there any good reason I should open it? I will post pictures I swear, just been working all day and what have you.

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Old 02-20-2012, 08:10 PM  
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I would remove it.

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Old 02-22-2012, 02:35 PM  
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Having trouble getting my phone to upload the pictures, new phone. Anyway I removed a section of it and it looks like when they rewired the house a year or two before I bought the house they ran the wires over the floor joist and then covered them with this plastic. So no one see's any benefit to it, should I just take it down?

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Old 02-22-2012, 03:48 PM  
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If you ever had water trapped between the foor and the poly, it would just sit there and cause troble.

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Old 02-28-2012, 10:35 PM  
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If the electric wiring is attached to the bottom of the joists rather than threaded through holes in the joists and kept above the plane of the bottom of the joists it does not meet code. (at least in this jurisdiction)
That leads me to beleive the plastic was put up to hide the faulty wiring job.



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