We placed it over the existing tar roof using fiber insulation boards.

Have that fearful tenant hop on their smart phone and use their 5G or Fiber wi-fi connection to livestream you (and inspector if relevant) as they walk through the property and look at what you need them to look at.

I can’t speak to the numbers since I have not seen complete plans and specs and finishes level of construction site conditions etc. but overall they look average for a typical straightforward project with vinyl siding or fiber cement siding shingle roof mid grade level of finish.  

They still have pile height, but the traffic areas have 'clumped' fibers, instead of those individual fibers you see on new carpet.It's always when the house is vacant that tenants notice these things.

Does the act of installation stir up fibers?

. :( I'm racing in the Nautica Malibu Triathlon.http://www.nauticamalibutri.com/event_schedule.cfmHopefully Google fiber will be in Austin by Sept. though!

Without easements for sewer, water, gas, electric, phone lines, cable TV, fiber optic, the subdivisions would be unlivable by today's standards.

It is brittle and the fibers are what's harmful.

I never imagined that stretching every fiber of my will, determination, physical/mental strength and pushing my body to its limits would have catapulted me into investing in real estate.  

The plumbing could have lead supply lines and galvanized supply lines, and the waste lines could be clay, "Orangeburg" (Black coal-tar impregnated fiber piping), and even cast iron waste can develop cracks especially if the lines go unused for long periods.