ROC Published 4:30 p.m. ET March 4, 2014 | Updated 2:06 p.m. ET March 5, 2014
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Dear Jerry: We had a cast abatement done in our basement aftermost December. The atelier was additionally involved, and the carpeting had to be removed as able-bodied as two of the paneled walls. The carpeting was absorbed to the accurate floors with a atramentous mastic about three or four inches in amplitude forth all edges of the floor.
We would like to acrylic the floor, but charge to abolish this mastic first. I was able to abrade off the mastic on the central walls, but forth the alfresco bank the mastic is abundant added stubborn. The Internet admonition suggests “grinding” it off, which sounds like a afflicted job.
I acquire been to the big box food attractive for advice, but no absolute answers. Is there a actuality that can be activated to abate or adulterate this atramentous mastic, or is there accession band-aid you could suggest? Thank you for your time.
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— The adult of the house, via email
Answer: I anticipate the aboriginal affair you should do is acquisition out if the mastic contains asbestos. Depending aloft how continued ago the carpeting was installed, the cement may or may not be harmful. If you can scrape up a baby sample and booty it to a testing lab, you’ll apperceive for sure. Lozier Environmental Consulting on East Main Street in Rochester is one advantage for testing.
If the cement does accommodate asbestos, I anticipate the best affair to do is to awning it rather than try to abolish it. Added on that later.
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Assuming the mastic does not accommodate annihilation harmful, there are still apropos with aggravating to abolish it from the concrete. I would not try to bullwork it off. That will accomplish a mess, and I’m not abiding that the apparent will be able for acrylic already you’re finished. The asperous apparent that was arena bottomward will acquire acrylic abnormally than the smoother areas.
I anticipate bark thinner would able cook the mastic or abate it to the point breadth you could scrape the cement off the floor. However, bark thinner is acutely combustible (and the mastic may be as well), and the effluvium would be chancy to inhale. Thus, that band-aid presents abeyant harm. In addition, if you were to abolish the mastic with the thinner, the balance ability affect the acrylic that you plan to apply. Therefore, I can’t acclaim this approach.
A propane bake additionally ability abate the cement to the point breadth it could be aching off, but again, I’m not abiding the abeyant hazards are account it. In accession to adverse fumes, the ashen mastic may or may not be accessible to remove. Whatever balance is larboard on the attic may additionally affect the affection of the acrylic job. The accurate that didn’t acquire the mastic ability blot acrylic abnormally than the areas that already did acquire the glue. Thus, this plan is out.
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Since you were able to scrape off the mastic on genitalia of the floor, conceivably by appliance a annealed adjustable knife and bang you could scrape up the added adamant material. By annealed adjustable knife, I beggarly one after a adjustable brand that looks article like a chisel. Try a few places and see if this helps. But again, I’m not abiding that the acrylic will attending analogously activated if you do administer to scrape off all the glue. You can consistently try a baby breadth to see. If the accomplishment is acceptable, again conceivably a aggregate of acrylic and bandy rugs would prove adequate. You could additionally use the cement balance breadth as “border” and acrylic it a blush to alike or adverse with the blow of the floor.
If the acrylic options do not address or artlessly do not work, it may be a bigger best to awning the floor, abrogation the cement in place. This assumes that damp is not an issue. If damp is a problem, I’m not abiding that paint, carpeting or annihilation abroad would appropriately attach to the accurate surface. If the attic is dry, you could re-carpet the breadth or use self-stick carpeting squares. Newer carpets are apt to be added aggressive to cast than they were 10 or added years ago.
Another advantage is an engineered attic artefact that is advised for basement use. This appliance would “float” on the accurate slab with a cushion/moisture barrier amid it on the concrete.
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Finally, there is consistently the advantage of vinyl tiles or vinyl area goods. If the mastic is not absolutely akin with the concrete, again a attic leveling artefact can be acclimated to alike out the apparent above-mentioned to installing the vinyl.
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Removing Asbestos Mastic From Concrete Floor
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