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Old 09-24-2013, 03:55 PM   #1
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asbestos in metal lath/plaster ceiling?


My house was built in 1948. A room in the basement has a metal lath and plaster ceiling, which either was original to the house, or was put up when the room was remodeled in the early 70s. I sent a sample of the plaster that actually sits on the metal lathe to get asbestos tested, and it came back with no asbestos detected.

But now that I look at other parts of the ceiling, there are areas that have another couple of outer layers above this lower layer of plaster. I didn't notice this before, otherwise I would have sent all layers to be tested. Should I bother testing these outer layers as well? These layers don't look to be decorative in any way; they are thin, almost like layers of skimcoat.

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Old 09-24-2013, 06:12 PM   #2
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asbestos in metal lath/plaster ceiling?


If the test came back no Asbestos, I would not go any further. Just wear long sleeve shirts, long pants, gloves, masks, eye protection, when taking down the material. Plaster dust will go everywhere, and will also irritate the throat & sinuses, if you do not wear some sort of mask.

After you get done in that room, vacuum off your clothes, shake them outside before going inside. Always wash your hands and wipe your face off, not washing it, to get off any dirt, before eating.

Reason for the above, is that older homes are more apt to contain Lead paint on the walls, than Asbestos. Another item, is do not run the hvac system if you can get by not having to, and use a fan to pull the air out of the room, to move the dust outdoors, so you can lessen having the dust migrate all throughout the rest of the house, even though you have plastic segmenting off that area you are working in.

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Old 09-24-2013, 06:19 PM   #3
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asbestos in metal lath/plaster ceiling?


i mask up and everything like gregzoll said but i spray the plaster with water and continue to spray it down while your taking it down. also spray the plaster piles and dust on the floor to try and keep the dust down. i'd also look into renting an air scrubber to collect the dirt in the air.
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Old 09-24-2013, 07:09 PM   #4
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asbestos in metal lath/plaster ceiling?


Thanks. I didn't think about spraying the ceiling and piles. That's a good idea. I've been wearing a P100 mask with glasses, longsleeves and pants. Seems to be working mostly OK.
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Old 09-24-2013, 07:31 PM   #5
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asbestos in metal lath/plaster ceiling?


Did they test the paint for lead?
Anything that was painted before 1978 should be.
http://www2.epa.gov/lead#
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Old 09-25-2013, 06:18 AM   #6
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asbestos in metal lath/plaster ceiling?


They didn't test for lead, but it doesn't look like the ceiling is painted, either.
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Old 09-27-2013, 11:32 PM   #7
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asbestos in metal lath/plaster ceiling?


If you mix a little vinegar in the water it breaks the surface tension of the water and helps it penetrate the materials you are removing
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Old 09-27-2013, 11:42 PM   #8
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asbestos in metal lath/plaster ceiling?


Quote:
Originally Posted by techpappy View Post
If you mix a little vinegar in the water it breaks the surface tension of the water and helps it penetrate the materials you are removing
A little bit of dish soap will also work.
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Old 09-28-2013, 02:32 AM   #9
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asbestos in metal lath/plaster ceiling?


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A little bit of dish soap will also work.
Dish soap works the best. Fire departments use dish soap like dawn to break down the water tenion so the water soaks in better.
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Old 09-28-2013, 06:11 AM   #10
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asbestos in metal lath/plaster ceiling?


Fabric softener will work better than dish soap.
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Old 09-28-2013, 01:18 PM   #11
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asbestos in metal lath/plaster ceiling?


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Fabric softener will work better than dish soap.
Vegans will not touch it, due to Fabric Softener is made out of rendered animal fats.
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Old 09-28-2013, 01:43 PM   #12
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asbestos in metal lath/plaster ceiling?


Quote:
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Fabric softener will work better than dish soap.
Good to know

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