Dense Pack Cellulose Insulation R Value

I love cellulose insulation.

Dense pack cellulose insulation r value.

Dense pack cellulose insulation total average cost per square foot. But air leakage through cracks voids and gaps is important responsible for approximately one third of an average home s heat loss. There is no such thing as a bad insulation only bad applications. Dense pack cellulose insulation installation cost.

Cellulose is not unusual in this regard. 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. Like many insulation materials it provides an r value of approximately r 3 5 per inch of thickness. Cellulose insulation has an r value range of 3 6 to 3 8.

1 in fact i love all insulations. 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. The more insulation the better.

2 but it irritates the heck out of me when folks say stuff that is not true particularly salesmen. Dense pack cellulose insulation total. Cellulose is considered dense packed when it is around 3 6 lbs per cu ft. However it is seldom used in canada despite its reasonable cost and efficiency.

There are four types of cellulose insulation blow in loose fill spray on and dense pack. Like wool insulation cellulose is frequently used for residential buildings. Because of the high density settling is not an issue. 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.

The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3. Methods and verification of density national weatherization conference. It can often be installed over existing insulation without removing the old insulation letting you reach the necessary r value with no fuss. Loose filled sanctuary loose fill can also be blown in or dense packed into walls and floors and it works great in attics.