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Old 05-12-2019, 10:55 AM   #1
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Flooded crawl space after heavy rain insulation damage?


So yea when it rains really heavy my crawl space can flood. The batt insulation in some areas is loose and hanging and it's not faced so I guess it got wet from condensation.

Question: Is the insulation trashed from the dampness in the crawl and needs to be replace or do I just fasten in back in place?

It kinda looks like this picture of the net.

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Old 05-12-2019, 11:40 AM   #2
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Re: Flooded crawl space after heavy rain insulation damage?


First, get a respirator, then remove all that wet and molded insulation, bag it up and throw it away. Before you install the new insulation may I suggest a couple of tips; make sure you get some fans and dehumidifier down there and dry it all up really good. Treat any mold that may have grown on any wooded area with a solution of water and bleach.

Second, check around the outside of the foundation to see if anything can be corrected like any loose or missing drain pipes/gutters. Try to have the water flow away from foundation, etc.

Finally, I would install a sump pump in the lowest part of that crawl space so the water has a place to go when it does rain heavy like that to prevent a situation like this from happening again. After everything is dried out really good and the water infiltration is corrected, then put the new insulation in. Just a suggestion.

Hope you get dried out soon and it stops raining kemper.
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Old 05-12-2019, 02:41 PM   #3
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Re: Flooded crawl space after heavy rain insulation damage?


that, to me, is a "Mold Incubator".
when it warms up with no ventilation, anyone that enters
that space is putting their health at serious risk.
your priority should be:
#1 ~ get ahold of the flood water situation and fix it - pronto.
#2 ~ establish some kind of continuous fresh air flow - pronto.

and yes, in my very personal opinion, if your situation even slightly
resembles that one photo, ALL of the insulation is toast and should
be removed A.S.A.P.

these are only our opinions and suggestions.
your house = your call.

.

.
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Old 05-12-2019, 05:09 PM   #4
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Re: Flooded crawl space after heavy rain insulation damage?


You are going to find very few crawlspaces without mold. Wear a mask if it makes you feel better. Just remember that the advice on here is from guys who are not spending their own money. Get rid of the standing water, close the foundation vents except for one on each end. Put a 70-pint dehumidifier in the center of the space and two box fans in the far corners facing opposite directions to circulate the air in a circle. If you do not have a 6mil vapor barrier over the dirt, do this first as soon as the water soaks into the ground. Run the de-humidifier in continuous for 2 days. Re-assess after that. You will probably be surprised. Get rid of any insulation that has fallen. If it is sagging, you can get it back into place with insulation supports you can buy by the 100 at lowes for $15. However, you will need to figure out why the crawl is flooding and get that fixed. If you have mold or mildew on joists, just get under there an clean them wit mild bleach solution. Jus go a little at a time over the course of a few weeks as not to get frustrated.



Source: Been there. I live in a humid area.
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Old 05-12-2019, 08:53 PM   #5
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Re: Flooded crawl space after heavy rain insulation damage?


Fix the drainage problem first.
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Old 05-15-2019, 07:24 AM   #6
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Re: Flooded crawl space after heavy rain insulation damage?


Take a close look at the perimeter walls in the crawl space and look for mineral deposits. If you see deposits, then part of the problem is water coming through the walls. This was pointed out to me by a home inspector while house hunting.
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Old 05-15-2019, 07:46 AM   #7
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Re: Flooded crawl space after heavy rain insulation damage?


A kinda looks like picture just will not do, as you don't know what the problem is, you don't know what picture to compare too.
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