Stair Odor?

old_house_funkJune 7, 2014

Hi,

Just purchased a 1930s house with some significant 'deferred maintenance'. We pulled up the wall-to-wall that the PO must have put down just before putting the place on the market and have discovered a number of exciting things:

1 - Linoleum from what may be the original design. The linoleum itself was thankfully asbestos free, but I need to send the mastic out for a test.

2 - The stairs had some strange brittle plastic like material nailed and glued to them, which it looks like the carpet installers must have just nailed and stapled right through.

3 - Oak hardwood floors downstairs. Lots of dark spots, but they should look good after some quality time with a drum sander.

Item #2 is a bit perplexing. In addition to the brittle tread material being obnoxious to try and remove, we're noticing that either the stairs themselves or the tread material give off a horrendous odor when wet. Fairly confident it isn't mold, but unsure what it is. It's staggering enough that we can't continue to work in the area for a couple of hours.

My theories are:

1 - Old shellac. This seems like a possibility, but I've worked plenty with shellac and never smelled anything like this before.

2 - Some type of old glue. I thought it could possibly be hide glue, which has a bit of a funky smell, but I've spent enough time around luthiers to know that it isn't bad enough to make me leave the room.

One thing we've observed is that it seems like wetting it makes the situation worse : at first we tried simple green (we were trying to keep lead dust to a minimum), and that was bad. Today we tried white vinegar and water. Also bad.

I'm at a bit of a loss as to what I need to do with this stuff, but i know it needs to go. Any ideas?

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mxyplx

Just for fun I Google'd

>wet wood bad smell>wet glue bad smell>plastic bad smell>wet plastic bad smell>plastic glue bad smell......might be a clue there someplace.

    Bookmark   June 8, 2014 at 10:45AM
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old_house_funk

I spent a couple of hours googling this last night, too. I didn't find anything that really seemed to fit the bill.

Nearest thing was about too much catalyst in a 2 part finish.. but that seems so improbable, on an old, small, rowhouse staircase.

    Bookmark   June 8, 2014 at 11:43AM
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chibimimi

Does it smell like ammonia? When you mentioned the dark spots on the wood floors, I immediately thought of pet urine stains. If previous owners had pets, it's possible they hit the stairs, too, and rewetting the plastic makes the odor return.

    Bookmark   June 8, 2014 at 12:39PM
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old_house_funk

Hi Chibimimi,

No, it's not really an ammonia smell. It's sharp and pungent when wet. My girlfriend noticed that today, as it's dried off, the smell has dissipated into more of a sweet smell than the strong smell from last night.

I needed to get a sample of the mastic from under the linoleum and when I sprayed it with soapy water (as per the abatement contractor's advice), I observed what seemed to be a similar odor. I'm not seeing the same kind of substance on the stairs as under the linoleum, and at this point I could be hallucinating smells.

    Bookmark   June 8, 2014 at 5:26PM
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