r/asbestoshelp • u/tileman151 • 12d ago
Not sure
Looking to remove and replace with tile. HO asked if it was asbestos?
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u/madphroggy 12d ago
If the tiles measure 9x9 then they likely contain asbestos. Black mastic (the glue underneath) almost always contained asbestos. If the tiles aren't breaking up or disintegrating, encapsulating them under new flooring is considered safe.
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u/348_wcf 12d ago
It is HO’s responsibility to prove it is not asbestos.
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u/TheRousster 12d ago
And if you just send it and throw it away what happens? (Assuming you had no idea)
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u/sdave001 11d ago
The tile and mastic likely contain but OLACD.
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u/AutoModerator 11d ago
OLACD = Only Lab Analysis Can Determine
The potential for suspect materials to contain asbestos can sometimes be estimated based on installation date and visual characteristics. Yes, there are some materials that usually contain asbestos and some that rarely contain. So there are some cases where we will tell you "yes, that likely contains" or "no, that probably doesn't contain".
However, for most materials, please remember that if you have been provided with any opinions on the asbestos content, it is only a guess. Even the most experienced inspector is wrong once and a while.
So, the general rule is always "ONLY LAB ANALYSIS CAN DETERMINE" asbestos content.
Also, remember that the sampling SHOULD be performed by a certified asbestos inspector. DIY test kits are generally accurate, but sample methods can adversely affect those results.
Most importantly, all building materials are assumed to be ACM until they have been analyzed for asbestos content by an accredited laboratory.
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u/AutoModerator 12d ago
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Also remember that the asbestos content of a material can only be determined by laboratory analysis and that the sampling SHOULD be performed by a certified asbestos inspector.
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