Dense Pack Cellulose Insulation R Value

It can often be installed over existing insulation without removing the old insulation letting you reach the necessary r value with no fuss.

Dense pack cellulose insulation r value.

Cellulose insulation has an r value range of 3 6 to 3 8. There is no such thing as a bad insulation only bad applications. 2 but it irritates the heck out of me when folks say stuff that is not true particularly salesmen. Dense packed cellulose insulation provides excellent thermal resistance an r value of 3 0 3 5 per inch sound proofs the wall and greatly retards air flow.

Loose filled sanctuary loose fill can also be blown in or dense packed into walls and floors and it works great in attics. Reduction in r value from 3 4 at 2 5 lbs ft3 to 3 3 at 4 5 lbs ft3 but insignificant. The r value of wet spray and dense pack cellulose insulation depends slightly on its installed density and the exact type of cellulose used but commonly ranges between 3 6 and 3 8 per inch 1 as measured by the standard astm c518 test. Cellulose is considered dense packed when it is around 3 6 lbs per cu ft.

Like many insulation materials it provides an r value of approximately r 3 5 per inch of thickness. Cellulose is a superb air blocker. 3 normally i keep quiet and move on but sometimes the nonsense can result in real damage particularly the stuff about dense. Dense pack cellulose insulation total average cost per square foot.

1 in fact i love all insulations. Because of the high density settling is not an issue. Dense pack cellulose insulation installation cost. Dense pack cellulose insulation total.

However it is seldom used in canada despite its reasonable cost and efficiency. The more insulation the better. Cellulose is not unusual in this regard. The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3.

There are four types of cellulose insulation blow in loose fill spray on and dense pack. I love cellulose insulation. When cellulose is densely blown 3 0lbs ft3 or 48kg m3 or greater it is an excellent wall cavity insulation that provides a good r value at a reasonable cost. But air leakage through cracks voids and gaps is important responsible for approximately one third of an average home s heat loss.