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Closed Cell Foam
Uses: Walls
Application: We will apply a 1” thick layer in the stud cavity with R6, followed by R13 fiberglass batt for a total of R19
Advantages: great air seal, great moisture seal, made of vegetable oil, high R value
Disadvantages: dries very hard, makes it hard for electricians to do wiring
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Open Cell Foam
Uses: Walls
Application: We will apply a 3-1/2” thick layer in the stud cavity for a total of R15
Advantages: great air seal, easier to pull wires through and to do new framing, made of Castrol Bean oil, no cure time
Disadvantages: moisture seal is not as good as Closed Cell, lower and inconsistent R-values
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Cellulose Insulation
Uses: Walls
Application: Applied in open studs
Advantages: inexpensive, great air seal
Disadvantages: can only use R13 on 2x4 walls, need 48 hours of cure time before drywall can be hung
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Fiberglass Batt
Uses: Walls and crawlspaces
Application: Comes in a roll and is placed between studs. Comes in R13, R15 and R19 values
Advantages: inexpensive
Disadvantages: poor air seal
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Blown Insulation - Walls
Uses: Walls
Application: Blow into existing stud cavities between wall sheathing and drywall
Advantages: can insulate existing walls with minimal damage
Disadvantages: Cost, low R-value, plugs will be visible from exterior
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Blown Insulation - Attic
Uses: Attic
Application: Blow onto floor of attic, 12 inches thick equals R38
Advantages: low cost, great air seal
Disadvantages: Won’t be able to use attic for storage
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Closed Cell Insulation - Attic
Uses: Attic
Application: Apply to underside of roof deck in between rafters
Advantages: great air seal, great moisture seal, controlled attic conditions for storage
Disadvantages: Cost, baffles need to be installed, if HVAC equipment is in the attic, fire barrier needs to be installed at additional cost.
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