Dense Pack Cellulose Insulation R Value

It has been unfairly criticized for its settling issues mold issues and its flammability.

Dense pack cellulose insulation r value.

But air leakage through cracks voids and gaps is important responsible for approximately one third of an average home s heat loss. Reduction in r value from 3 4 at 2 5 lbs ft3 to 3 3 at 4 5 lbs ft3 but insignificant. 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 installation cost.

However it is seldom used in canada despite its reasonable cost and efficiency. Because of the high density settling is not an issue. I love cellulose insulation. The more insulation the better.

There are four types of cellulose insulation blow in loose fill spray on and dense pack. 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. 2 but it irritates the heck out of me when folks say stuff that is not true particularly salesmen. 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.

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 total. Cellulose insulation has an r value range of 3 6 to 3 8. Cellulose is not unusual in this regard.

Like many insulation materials it provides an r value of approximately r 3 5 per inch of thickness. Like wool insulation cellulose is frequently used for residential buildings. Methods and verification of density national weatherization conference. Loose filled sanctuary loose fill can also be blown in or dense packed into walls and floors and it works great in attics.

Cellulose is considered dense packed when it is around 3 6 lbs per cu ft. The r value per inch decreases slightly as density is increased from 3 0 to 4 0 lbs ft3. Dense pack cellulose insulation total average cost per square foot. 1 in fact i love all insulations.