Frost In Unfinished - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 01-11-2010, 04:09 PM   #1
Join Date: Jan 2010
Location: South Dakota
Posts: 2
Rewards Points: 10

Frost in unfinished

I live in South Dakota in a house that is roughly a year old and has an unfinished basement. The unfinished basement has a walkout side so 3 walls are poured concrete and the other wall is 2x6 framing and sheeting. There is insulation with no backing on that side of the house.

We get some pretty cold winters around here. The weekend was pretty warm after a week of VERY cold temps. The other day I noticed the bottom board looked wet, so i looked behind the insulation for water and there was a bunch of frost. I got to looking further and noticed what looks like black mold to me.

I pulled the insulation off and it looks like it has condensation that has been getting in then freezing. This is also near the walkout door with the light box and outside outlet in it. It looks like they didnt seal those at all.

So my question is, what do i do? Obviously I have to kill the mold but how do i keep this from happening again? Is the insulation ruined? Any help would be great, thanks!


keltic25 is offline   Reply With Quote
Old 01-11-2010, 06:39 PM   #2
Join Date: Jun 2009
Location: atl & hilton head
Posts: 4,581
Rewards Points: 4,744

just a wag but there's no heat down in the bsmt, is there,,, garden sprinkle can & some 1/2 & 1/2 clorox/wtr'll kill the mold,,, insulation ruined - would YOU put that insulation BACK INTO PLACE knowing what you do now ? ? ? at least insulation's cheap - go buy an utility knife & another roll - even treat your self to a genl purpose stapler

ck for drafts where you found the frost - shouldn't be ANY ! welcome to home ownership !

ps - its ' sheathing ', not ' sheeting ',,, sheeting's something pointy-hat wearers used to wear in the old days down south

pps - what'd you mean by ' no backing ' ? ? ? understood the ' black mold ' part

ppps - you DID say ' any help ', remember ? ? ?


stadry is offline   Reply With Quote
Old 01-11-2010, 07:36 PM   #3
Master General ReEngineer
Bondo's Avatar
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 6,611
Rewards Points: 1,628

This is also near the walkout door with the light box and outside outlet in it. It looks like they didnt seal those at all.
Ayuh,... You'd better grab a cauking gun,+ some cauking too...
Bondo is offline   Reply With Quote
Old 01-11-2010, 07:46 PM   #4
Join Date: Jan 2010
Location: South Dakota
Posts: 2
Rewards Points: 10

Thanks for the input. Actually there is heat downstairs. I imagine it doesnt' stay as hot as upstairs since it is not fully insulated but probably isn't ever much below 60 degrees.

What I meant by insulation with no backing is the fiberglass insulation that doesn't have the paper on one side.

The mold seems to be most prevalent at the top of each cavity b/w the studs where the sill plate is. I'm not sure if thats cuz it rises and condenses or what?

What about the foam insulation rather than the rolls? Also, I know my contractors used some sort of plastic to cover the walls after they put the insulation in upstairs. Should I do that before I finish it?

Thanks again.
keltic25 is offline   Reply With Quote
Old 01-12-2010, 07:02 AM   #5
ccarlisle's Avatar
Join Date: Jul 2008
Location: Montreal, Quebec, Canada
Posts: 1,889
Rewards Points: 1,000

Read up on some of the other posts on this forum about basement and insulating; you'll find the answers there that, basically, say that anywhere where the winter is cold enough to require a heating system, basements can be made liveable by (1) insulating (2) controlling the moisture both bulk water and water vapour and (3) sealing out the drafts.

You have a problem with moisture and air sealing, maybe even insulation, I don't know. But you can fix the problem yourself...the results you have now (mould) will become a thingg of the past, but for now remove it as much as you can as part of an 'insulating-the-basement' project.

It's all part of the solution; doing one without the other will only get you back to square one.
“The average American woman is about 25 pounds heavier than she was in 1960...Recognizing obesity as a disease will help change the way the medical community tackles this complex issue that affects approximately 1 in 3 Americans,”
ccarlisle is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
At a crossroads in my basement project - waterproofing help needed callisto9 Building & Construction 37 07-06-2015 07:40 AM
Frost in Basement Wall Corners Woody10 General DIY Discussions 10 10-28-2010 03:53 AM
Adding Subpanel for Basement - Few Questions mindle Electrical 28 01-07-2010 08:49 AM
Inexpensive way to section off unfinished basement? eastie Building & Construction 0 11-06-2009 04:47 PM
Frost at top of basement concrete walls dtabor Building & Construction 3 01-16-2009 08:00 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1