If you're talking about a really big infestation you're going to have to remove all of the insulation and probably replace the sheetrock on all of the ceilings in the areas where the bats were.

With larger commercial deals you can get into non-recourse financing, where the borrower is insulated from exposure in cas of default.

He said under the lid was about 2 feet of insulation to keep it from freezing in the winter.Looks like there could be some sanitary issues with this type of system.

My guy removes, installs, insulates, and puts trim back in, my painter caulks trim, i pay for insulation and caulk.

[/b]A few reasons: 1) the people promoting this often have dozens of properties, many of them owned outright, and use LLCs to insulate against personal liability and also to circumvent different state or local laws monitoring owners with more than a certain number of properties. 2) many people don't know what they're talking about and get excited about how easy it is to "start" an LLC which takes about 90 seconds and a $100-$500 filing fee in most states; their assets are not protected unless several requirements are met and most newbie investor LLCs don't meet the proper requirements. 3) People misunderstand how much liability protection you actually get with an LLC. 4) Lawyers, accountants, and "start your company" companies all get paid if you start an LLC whether or not it protects you so they have a vested interest in promoting their creation.

Did you consider blown-in insulation?  

But there may be other good reasons to remove it, e.g. how are you planning to insulate, how are the insides of the walls (dust, droppings, etc)?  

The back should have enough room to pull out due to insulation on top of the unit.  

If you live in a area where there are winters insulate the duct as it runs through the attic.

(one BP poster (Christian Morentcy) was courageous enough to use OSB stained and lacquered to look like bamboo tiles)-+/add craigslist rugs-check if you can add any insulation between floors....for industrial feel, use conduit pipes for shower/towel holders.....