It will also help to absorb noise from your ducting system.
R80 attic insulation.
For diy attic insulation you ve got two choices.
For most of us the savings stop at about r50.
If the walls are uninsulated r80 in the attic is a complete waste of investment.
Unlike fiberglass insulation.
Wraps around new or existing ductwork.
Loose fill cellulose insulation is composed of pulverized paper and fabric material treated with a flame retardant.
I have a 6 year old home with about 12 inches r 30 of blown in insulation in the attic.
Recommended inches of cellulose attic insulation.
Recently door to door sales representatives for an insulation company offered a free inspection and quote to add additional insulation.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
If you live in northern canada and have 5 8 on 16 centers go with r80.
Duct warp insulation to reduce condensation in your duct system.
Attic existing 3 4 inches of insulation uninsulated floor uninsulated wood frame wall insulated wood frame wall 1 r30 to r49 r25 to r30 r13 2 r30 to r60 r25 to r38 r13 to r19 n a 3 r30 to r60 r25 to r38 r19 to r25 and add r5 insulative wall sheathing beneath the new siding.
The costs of additional insulation far outweighs any potential energy savings.
The pitch was that the r value at the time of construction was sufficient but that codes have been revised and more.
Use of this duct warp should help improve temperature efficiency of your duct system.
Of duct surface measures 2 ft.
Covers up to 60 sq.
Use this master flow r 8 0 60 sq.
If you gave it the full 18 of cellulose on day 1 the settled depth over time would be about 16.
Both can be added to uninsulated attics or layered over existing material.