In general an attic s r value should be between r 30 and r 49.
Attic insulation types r value.
Insulation level are specified by r value.
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.
Choose from two types.
In particularly cold climates you might go up to r 60.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
The recommended r value for attic insulation in ontario is between r 50 and r 60.
A higher insulation r value usually means a higher price point as well.
Spray foam attic insulation.
The higher the r value the better the thermal performance of the insulation.
Your home s r value score will guide you toward the type of insulation you need.
Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.
In general how the insulation s method of installation can give you an idea of how it compares to other types of insulation.
Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need.
The r value of the insulation for every inch of thickness depends on the type of insulation.
While there are additional considerations such as venting and moisture problems to take into account when you insulate under floors the united states department of energy recommends an r 25 rating in cold climates and an r 11 in warmer parts of the country.
If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.
R values of common types of insulation.
For every type and material of insulation check the r value per inch of thickness that the manufacturer has listed.
Achieving greater r values in exterior walls.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
The r value per inch for different types of insulation varies depending on the.
The higher the r value the better the thermal performance of the insulation.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.
Spray foam offers the best attic insulation performance available.
Closed cell and open cell aka 2 pound and pound respectively.
The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting.
