Insulating A 2x6 Vaulted Ceiling

Better than spray foam thermal break and relatively consistent r 30.

Insulating a 2x6 vaulted ceiling.

Cellulose offers much greater insulating power per inch and compared to fiberglass provides more insulating room because ventilation space is not required. One of the reasons for 2 vs a 1 gap is some vaulted ceilings can have a point source of air leakage like a recessed light where there is no ventilation help from all other sources. I m looking for some suggestions in terms of insulating. When renovating an older home whose roof rafters are only 2x6 really 5 1 2 x 1 5 in dimension the available space for insulation and ventilation is limited therefore limiting the options for a combination of good under roof ventilation and high insulation r values in the cathedral ceiling.

R value insulation receives a rating. It provides an open airy look and feel to the room and they are often in demand among home buyers. This means that in a limited space such as a cathedral ceiling cellulose offers a much higher stated r value. Insulating cathedral ceilings can be quite challenging.

Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne. Old cottage cathedral ceiling i have a 50 year old seasonal cottage in a northern climate. A cathedral ceiling is a sloping and pointed ceiling which is usually high and open. Given that many homes survive with far less including those skimpy.

Cathedral ceilings are a feature in many homes that add to value to the house because the high ceiling tends to make rooms look larger. If i retain the vaulted ceiling i ll need to furr out the 2x6 s to achieve the recommended r value. I live in vermont so it s recommended to have around r50 insulation in the ceiling. There is no insulation in the ceiling and i suspect little to no effective insulation in the 2x4 walls.

The simple 6 12 gable roof is composed of actual 2x6 rafters 24 oc sheathed with 1 2 plywood and covered with asphalt shingles. Insulating a vaulted ceiling is similar to insulating exterior walls with one notable difference. Attic trusses typically have a sloping ceiling. Thus each bay needs to have more.

Best insulation technique for 2x6 cathedral ceiling. The garage is 12x20 and has about a 27 degree pitch in the roof with 2x6s as rafters.