A method for determining the density of loose fill, blown in {HEAD ~ place insulation} comprises {TAIL ~ the step} of providing a structure with a cavity having a known depth 
A method for determining the density of loose fill , blown in { HEAD ~ place insulation } comprises { TAIL ~ the step } of providing a structure with a cavity having a known depth
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH