Go Back   DIY Chatroom Home Improvement Forum > DIY Repair > General DIY Discussions

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-29-2013, 06:21 PM   #1
Member
 
Join Date: May 2013
Location: Northern Calif, just below San Francisco
Posts: 34
Rewards Points: 25
Default

Mold on sheet rock


My brother had a leak in a pipe under his house, as a result there is mold on the sheet rock in his bedroom. The leak has been fixed and everything is now dry. The strange thing is that the mold only occured in the few small areas that were not insulated. As you can see from the pictures most of the wall has blown in insulation, there was no mold in these areas, but the few areas that did not have insulation had mold on the walls. We removed the sheet rock 4' high and checked out the studs, all were very dry and no mold on any studs. So we insulated the areas and re-sheet rocked. I think this will solve the problem but any comments are welcome.
Attached Thumbnails
Mold on sheet rock-mold-1.jpg   Mold on sheet rock-mold-2.jpg   Mold on sheet rock-mold-4.jpg   Mold on sheet rock-mold-5.jpg   Mold on sheet rock-mold-3.jpg  



Last edited by mrwoodty; 05-29-2013 at 06:24 PM.
mrwoodty is offline   Reply With Quote
Old 05-30-2013, 07:28 AM   #2
Member
 
PoleCat's Avatar
 
Join Date: Sep 2009
Location: Dayton, Ohio
Posts: 1,524
Rewards Points: 730
Default

Mold on sheet rock


No insulation = cold surface = condensation.

__________________
"Ask me anything. If I don't know the answer I'll make something up."
PoleCat is offline   Reply With Quote
The Following User Says Thank You to PoleCat For This Useful Post:
user1007 (05-30-2013)
Old 05-30-2013, 07:35 AM   #3
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 6,941
Rewards Points: 3,016
Default

Mold on sheet rock


Quote:
Originally Posted by PoleCat View Post
No insulation = cold surface = condensation.
+1

Not at all surprising.

Warm air loss + cold outside sheathing = Moisture = mold.

Insulate and air seal.
Windows on Wash is offline   Reply With Quote
Old 05-30-2013, 09:07 AM   #4
Member
 
ccarlisle's Avatar
 
Join Date: Jul 2008
Location: Montreal, Quebec, Canada
Posts: 1,889
Rewards Points: 1,000
Default

Mold on sheet rock


Well, OK then; that was a good weekend project now wasn't it? - that is, if you really had nothing else to do with your time & energy and/or are 100% allergic to what you think is mould in there. Because from where I stand, there is no connection between the leak your brother had under his house and what you think is mould behind that triangular piece of drywall in the bedroom...yet, even if you think that was mould, I probably have more mould in my kitchen sink than you have there...

Moulds that emanate from water leaks have been there for a while and are usually coloured: black, grey or sometimes odd colours, and there's usually significant smell and evidence of spreading mould colonies. What you have there would not even qualify on any of these fronts and may - just may - be a spot of mildew - but nothing like 'mould' from a leak.

I reckon you are overthinking all this mould stuff; please remember that there is mould everywhere. Outside, inside, and everywhere there are organic materials that can be eaten like drywall, admittedly. But there are a number if other factors that have to be just right for mould to develop to any extent that would be considered a health concern - and what you have there doesn't even make the charts.

Still, 'fun' for a project, I guess. You don't say where you are located (as that affects the insulation you chose) nor how you treated this 'mould' you think you have - as I trust you didn't just think that reinsulating and boarding up would solve anything, now did you?
__________________
ďThe 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,Ē

Last edited by ccarlisle; 05-30-2013 at 09:09 AM.
ccarlisle is offline   Reply With Quote
The Following User Says Thank You to ccarlisle For This Useful Post:
user1007 (05-30-2013)
Old 05-30-2013, 11:48 AM   #5
Mold!! Let's kill it!
 
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,849
Rewards Points: 2,012
Default

Mold on sheet rock


Without having seen what things looked like prior to demolition, I would not care to judge whether it was necessary or not. Since it occured only at the uninsulated stud cavities, I would guess that it could be an on-going problem that could well re-occur. You have corrected that deficiency by insulating, and my bet is that it will not continue to be a problem. I see nothing wrong with being pro-active and permanently solving the problem.
Maintenance 6 is offline   Reply With Quote
Old 05-30-2013, 03:18 PM   #6
Member
 
Join Date: May 2013
Location: Northern Calif, just below San Francisco
Posts: 34
Rewards Points: 25
Default

Mold on sheet rock


Hi ccarlisle
Thank you for your incredibly sarcastic response to my listing. Wow what a big chip you have on your shoulders. I did not take a picture of the face of the sheet rock but the mold was very thick and black and the room did smell very musty. I was surprised there was no mold behind the walls but the way I look at it, better to remove the sheetrock and check the studs then have my brotherís family get sick. Please keep in mind we are DIYíers and not professionals, thatís why we try and get helpful comments. The labor was free so were only looking at one piece of sheet rock, some insulation, some mud and paint. Thatís a small price to pay for our piece of mind.
mrwoodty is offline   Reply With Quote
Old 05-30-2013, 03:35 PM   #7
Member
 
Join Date: May 2013
Location: Northern Calif, just below San Francisco
Posts: 34
Rewards Points: 25
Default

Mold on sheet rock


By the way: for what it's worth, here is what I have concluded. The leak in my brotherís crawl space created a large 3" deep puddle just below his bed room. We fixed the leak several months ago and the crawl space is now completely dry. I assumed the cold water vapors rose into the walls of his bedroom and since most of the walls were insulated (I assume with mold resistant insulation), the water just dried up. But the areas without insulation created mold on the sheet rock. Obviously we have replaced the moldy sheet rock and I donít think we will have any further mold problems.
mrwoodty is offline   Reply With Quote
Old 05-31-2013, 07:33 AM   #8
Mold!! Let's kill it!
 
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,849
Rewards Points: 2,012
Default

Mold on sheet rock


The puddle in the crawl space could have created a high humidity situation that became noticable due to the lack of insulation in certain areas. Sort of the "perfect storm" for mold to thrive. A couple of suggestions: check the crawl space to see if it is properly vented, and correct any deficiencies. Second, for the future and just as info, whenever you find moldy drywall, cut at least one foot past the last sign of mold or elevated moisture content.

Maintenance 6 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
permanent paint on sheet rock ceiling in bar brandon32333 Painting 2 04-29-2013 05:09 AM
Removing wall latex paint from sheet rock ceiling dehlila123 Painting 3 10-18-2011 02:04 AM
Sheet Rock vertical or horizontal chefcrazymike Building & Construction 10 10-21-2009 02:20 PM
Sheet rock repair/Lower Bay Window area VEEDUB General DIY Discussions 2 10-03-2009 09:44 AM
sheet rock for firewall in a garage sfoderick Building & Construction 4 05-30-2009 03:47 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.