If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Different types of attics.
Attics with lots of obstructions and penetrations to work around.
Multiple types of vents can work together to create an equal inflow of cool air and outflow of hot air in your house.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
The most common insulation materials are fiberglass cellulose and foam.
The type of insulation you need depends on which type is currently installed and the required r value.
An attic sometimes referred to as a loft is a space found directly below the pitched roof of a house or other building.
The big disadvantage with spray foam is cost.
If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos.
Attics unfinished walls ceilings and floors especially in hot climates reflective or radiant barriers work differently than most types of insulation and so its effectiveness is not.
The ceiling hatch is generally the size of a door and is set within a recessed panel.
An attic may also be called a sky parlor or a garret because attics fill the space between the ceiling of the top floor of a building and the slanted roof they are known for being awkwardly shaped spaces with exposed rafters and difficult to reach corners.
For loose fill insulation each manufacturer must determine the r value of its product at settled density and create coverage charts showing the minimum settled thickness minimum weight per square foot and coverage area per.
The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation.
Low clearance attics with limited headroom for maneuvering during installation.
Attics with irregular or nonstandard joist spacing.
Attics where there is existing insulation to be topped since it fills gaps and joints well.
Insulation types include loose fill batts rolls foam board spray board and vapor barriers.
The most common type of attic access style is the attic ladder and hatch system.
I d blow insulation on the attic floor after air sealing of course.
This type of attic access is featured by a set of pull down wooden and metal stairs that are concealed by a ceiling hatch.
Exhaust vents like attic fans ridge vents are primarily placed at the very top of the roof or the highest pitch where hot air gathers.