Good R Type Insulation For Attic

And don t forget the ceiling.

Good r type insulation for attic.

They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. Choose from two types. If the garage is open to the rafters the boards that support the roof use r 38 insulation between the rafters at the roof if they are 10 inches deep. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

In general an attic s r value should be. Insulation level are specified by r value. The r value per inch for different types of insulation varies depending on the. Spray foam attic insulation spray foam offers the best attic insulation performance available.

Closed cell and open cell aka 2 pound and pound respectively. For diy attic insulation you ve got two choices. What type of insulation should i use in my attic. If the joists are 10 inches deep the cavity can take high density r 30 insulation which is 8 1 2 inches thick more than enough for floor insulation.

Both can be added to uninsulated attics or layered over existing material. The higher the r value the more effective an insulating material is. Recommended home insulation r values. If an attic or bedroom rests above insulating this horizontal wall is crucial.

Batt and blanket insulation. Loose fill or batt the common term for blanket insulation. These are large rolls of insulation that are easy to cut into usable shapes. 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.

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. Achieving greater r values in attics 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. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.