Suited up and resperators on the old insulation was bagged and carted out. The entire attic was Hepa vaccuumed before the blocking was added.
High Hats are all sealed units and 1 1/2" styrofoam blocking was glued in place with spray insulation.
Cautiously crawling around and doing the blocking took quite a whle. The house is a ranch with a 32 foot span by some 50 feet long.
The entire attic was sealed with spray foam at all electrical boxes and at all piping chases. Every bay was plastic lined.
The plastic is an air barrier. Space is left at the blocking to allow air flow above the insulation.
No insulation will be needed within the high hat boxed in areas.
And in goes the R 19 insulation.
The insulation is totally encapsulated, which makes for an itch free install !!!
An area that had deeper bays got R 30 insulation.
Temerature controlled fans were installed at both ends of the 50 foot run with a 900 cfm each.
This page was last modified on Tuesday, August 31, 2010 10:29:22 PM