In particularly cold climates you might go up to r 60.
Best type and brand of fiber glass attic insulation.
For diy attic insulation you ve got two choices.
The type of insulation you need depends on which type is currently installed and the required r value.
Different insulation materials have unique strengths and weaknesses and some attics will be more suited for certain material than others.
Both can be added to uninsulated attics or layered over existing material.
In general an attic s r value should be between r 30 and r 49.
You see from a performance perspective the best attic is an empty attic and i ve worked to ensure that i don t have anything in my attic except air.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Loose fill or batt the common term for blanket insulation.
Types of attic insulation material though r value is a the higher the better measurement the insulation material with the highest r value isn t necessarily the best choice for your house.
The best attic is an empty attic.
Insulation types include loose fill batts rolls foam board spray board and vapor barriers.
Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc.
Modern technology of blanket insulation today is considered the best insulation for attic.
The most common insulation materials are fiberglass cellulose and foam.