I d blow insulation on the attic floor after air sealing of course.
Best attic insulation rating.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
Handy homeowners can install blown in insulation in the attic.
Insulation level are specified by r value.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical.
The most effective places to add insulation to older homes are exterior walls attics basements and crawl spaces.
Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
The big disadvantage with spray foam is cost.
Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.
Both can be added to uninsulated attics or layered over existing material.
If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
For diy attic insulation you ve got two choices.
The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home.
To choose the best insulation for your home from the many types of insulation on the market you ll need to know where you want or need to install the insulation and what r value you want the installation to achieve.
Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.
The higher the r value the better the thermal performance of the insulation.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
Insulation with a higher r value will perform better than insulation with a lower rating.
R value is a measure of insulation s ability to resist heat traveling through it.
Loose fill or batt the common term for blanket insulation.
