On Feb 28, 12:41*pm, wrote:
dpb wrote:
... unless they quoted a different insulation material the R values should
be directly proportional to the installed thickness within roundoff.

Perhaps both include the fixed cost of showing up.

Nick

Two points:

1 - He said the R values should be proportional to the installed
thickness, which is true and costs don't factor into that

2 - If you allow for fixed costs, then getting 2X the inches of
insulation should cost less than 2X the price. In his quotes, in one
case, it costs MORE per inch for the thicker blown-in insulation.