First the good stuff.
Dense pack cellulose insulation cathedral ceiling.
This makes it much more difficult for air to move through the insulation.
By filling the entire cavity with a dense pack you get the highest insulation ratings fiberglass or cellulose can achieve.
The insulation will continue to keep the cavity filled.
It is the dense packing of unvented cathedral ceilings or unvented flat roofs that is the problem.
For a faster more affordable solution to the cathedral ceiling problem dense pack cellulose insulation can be blown into the ceiling s rafter bays through access points along the roof eaves or roof ridge.
One of the most effective ways of dealing with existing uninsulated frame walls is to blow cellulose into the wall cavities.
At 3 5psi the insulation will not settle and create gaps.
There are several major advantages to dense packing completely filling a cathedral ceiling cavity with cellulose.
So bees ants and termites won t find that ceiling so inviting anymore.
Cellulose is treated with borate a harmless naturally occurring mineral that has the ability to deter bugs.
There will be plenty of insulation packed at the right density.
In fact dense packing walls typically results in remarkable performance.
You achieve the maximum insulating capacity.