Earlier this year i got a question about a home that had spray foam insulation in the attic.
Blown in celluclose in walls them foam the attic.
Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.
We include blown in attic insulation pros and cons but we can t recommend blown in fiberglass or cellulose as your best insulating choice.
When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding.
Insulation efficiently fills gaps.
Blown in fiberglass is considered flame resistant.
Any help with insulating info would be greatly appreciated.
We are thinking of air krete foam in our existing walls and blown in cellulose in the attic.
So what are the advantages and disadvantages of each of these insulation materials.
The walls were filled with blown in cellulose insulation and the attic had open cell spray foam insulation installed.
I am considering having the cellulose on the attic floor removed and replaced with r 30 open cell spray foam.
Nothing unusual about that.
Is the air krete a cement based foam much better than dense pack cellulose in the walls.
A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.
Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch.
Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics.
It s about 1200 more.
I suspect some comes from the blown cellulose in the attic or the dense packed cellulose in the walls.
We currently have next to none in both attic and walls.
Blown in insulation flows down around wall studs.
A contractor says that we will be better off with the foam due to its air sealing properties plus he can better.
How are they similar and how are they different from blown fiberglass vs.