I did asbestos building inspections and monitored fairly large asbestos removal projects for a consulting company for a few years, so I have some idea of what I'm talking about here.
Eden wrote:He has a contractor that said he'd wet it down and remove it for $750.00 and I had heard it cost thousands.
WOW, don't do that! That price is waaaay too low. As Verve says in the post below yours, the only proper way to remove asbestos insulation* is to build an airtight enclosure of poly and adhesive/duct tape and with proper anteroom, wet the insulation down as it is removed, use a proper bagout procedure, encapsulate all exposed surfaces, and perform clearance air monitoring before taking down the containment. For $750, that guy is going to do about one and a half of those things, and you'll be left with a far worse situation, a basement full of unbound asbestos fibers that will become airborne every time you have a draft or move things around.
* another way that can be used for smaller sections is a glovebag that basically contains all of the above in a small temporary containment (still not happening properly for $750):
Eden wrote:tiles usually have a very small amount.
Although that's usually
true, some floor tiles can have as much as 30-40% asbestos, especially the old 9"x9" tiles. The mastic gluing them down can also be positive for asbestos, most likely if it's black. However, floor tiles and mastic are less likely to produce airborne fibers when removed unless they're really crumbling or unless totally dry methods are used. Honestly I'd be fine with removing these on my own if they were in my house, but that's me.
Verve, I don't know for sure about the efficiency question, but I suspect that (a) the asbestos is significantly more efficient than fiberglass or anything else you can get for whatever money you're left with after the removal
, and (b) that you probably won't find reputable verification of that anywhere because asbestos has been so demonized. Other than the airborne fibers causing cancer, it's actually great stuff. If it's in good condition or can be properly encapsulated, there's nothing better. It's strong, it's fireproof and has great insulating properties - that's why it was mixed into pretty much everything that it could be at one time. That said, though, you probably need to weigh the factor of your home's resale value as well. Asbestos insulation, even in great condition and properly encapsulated, is going to be a major turnoff for most people.