Dense Pack Cellulose Insulation Cathedral Ceiling

Advantages to dense packing.

Dense pack cellulose insulation cathedral ceiling.

The insulation will continue to keep the cavity filled. The pipe is inserted into each rafter bay through access openings made along the roof ridge. I am thinking about this and my assembly would look like. Shingles roof felt ice guard osb taped seams dense pack cellulose intello drywall paint.

Larry janesky of dr. Cellulose is treated with borate a harmless naturally occurring mineral that has the ability to deter bugs. Many cellulose manufacturers and veteran installers claim problem free slant and unvented cathedral ceiling installations though i would recommend against it and that s probably because most roofing in existing homes does breathe to some extent and the dense pack significantly reduces air flow to the roof deck and can also safely store and. So bees ants and termites won t find that ceiling so inviting.

The insulation installer is recommending opening the soffits and ridge. By filling the entire cavity with a dense pack you get the highest insulation ratings fiberglass or cellulose can achieve. It is a. You achieve the maximum insulating capacity.

Don t be dense cellulose and dense pack insulation. Energy saver suggests dense packing cellulose to insulate this cathedral ceiling where air flow will now be interrupted and insects and pests will be unlikely inhabitants. In unvented cathedral ceilings greenfiber stabilized insulation or greenfiber loose fill insulation is dry dense packed over an air impermeable insulation as prescribed per irc 2009. One of the most effective ways of dealing with existing uninsulated frame walls is to blow cellulose into the wall cavities.

Figure 3 looks a whole lot better. Energy saver uses a long pvc pipe against the chimney to fill the cathedral ceiling s rafter bays with dense pack cellulose insulation. Pull out the fiberglass and install r 20 dense pack cellulose by national fiber for the rafter bays at the cathedral and r 40 for the attic floor. It is the dense packing of unvented cathedral ceilings or unvented flat roofs that is the problem.

The 475 blog has a new post about unvented dense pack cellulose cathedral ceiling flat roof systems using intello membrane on the inside to allow the assembly to dry to the inside. Thank you glenn berger. This makes it much more difficult for air to move through the. How can one be certain that the cavities are full and are there moisture concerns.

First the good stuff. Cellulose dense pack cathedral ceiling. Cathedral ceilings greenfiber stabilized insulation or greenfiber loose fill insulation is dry dense packed to a minimum density of 3 5 lb ft3 56 1 kg m3.