Bricks, Masonry, Asphalt and Concrete - water between linoleum and slab

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knothandy
01-27-09, 08:02 AM
Dishwasher leaked. Water saturated between 4 layers of linoleum and the conceret slab. There was enough to spread into the next room and visibly wet through the carpet - that's how we noticed it. Leak fixed.

QUESTION: Do I need to pull up all of the linoleum to let it air out and properly dry or can the moisture leach through the slab and not leave any mold problem or moisture issue that might crack the slab or other?

I dont want to take it up for 2 reasons: 1) bottom layer is asbestos based and 2) it's single sheet linoleum so the pathc would be ugly - it means taking a LOT out. BTW, I will certainly be pulling up the carpet in the next room.


Pulpo
01-28-09, 08:57 AM
Having worked flood damage for short time, I would remove it. That last thing you want is mold. Hire a couple of day workers to remove it. Go all the way to the subfloor.

knothandy
01-28-09, 09:02 AM
Just a point of clarification -- there is no "subfloor" per se, it's just linoleum on concrete. Can this still mold? I thought you needed something more porous like wood or drywall or fabric. Thanks for any final comments... I guess I'm steering your direction.


Pulpo
01-28-09, 09:15 AM
Concrete is porous to an extent. You can have mold on it. You'll be a lot better off if you remove everything. As I said, hire a couple of day workers. It will cost you $100 each and lunch. Have cutting tools and a lot of duct tape to roll it into 4 foot sections for sanitation.

twelvepole
01-28-09, 10:03 AM
Concrete is the subfloor! Trapped water under linoleum will lead to mold/mildew. Damp/wet surfaces that remain so can develop mold/mildew within 24-48 hours. Get the lino out of the home. Set up dehumidifiers and fans to expedite drying out of concrete. Use wet/dry vacuum to remove water from carpet. Peel it back and cut out wet cushion and discard. Mold/mildew will grow under carpet and cushion. Elevate carpet with plastic milk crates or something to keep it up off the concrete subfloor so that the subfloor can dry out and air circulate around and through the carpet.

You do not indicate how long ago the leak occurred. Upon removing lino and lifting the carpet to remove cushion, should you see signs of mold/mildew or smell musty odor, you need to disinfect subfloor with bleach/water solution.

If you do not have dehumidifier or fans, perhaps you can borrow these. If not, check the local rental equipment store.

knothandy
01-28-09, 10:19 AM
Thanks 12p / pulpo. That answers it. I just didnt want to toy with the lower asbestos layer if I didnt have to.

I fixed the leak as soon as I saw it. It only became apparent in the next room 2 days ago. I immedeatly traced it back to the dishwasher - it looks like it has been leaking for some time but it is just a pinhole. The washer was clogged and I think forced more through.

Pulled up the carpet and cushion last night. Now mold except the carpet tack strip bled through to the bottom of the carpet... slightly moldy but the cement is dry and the cushion dried out as well. So it definately wasnt sitting around too long.

But based on this I guess I am going to go into the lino layer. Thanks again.

BTW, how do I post picutures on this forum?