You can achieve better thermal performance in your attic by adding an additional layer of insulation.
Attic batt insulation r value.
Achieving greater r values in exterior walls.
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.
Warmer climates only require an r 38 or higher or about 12 or more.
The higher the r value the better the thermal performance of the insulation.
As a benchmark one inch of solid wood has an r value of 1.
Recycled glass or sand that s melted and spun into fibers.
Insulation project calculator how to install naima r value certification product training videos colab learning video library for pros distributor locator why owens corning insulation propink vs.
Insulation level are specified by r value.
Thermafiber residential mineral wool insulation commercial grade at home thermafiber residential mineral wool blankets are ideal for insulating walls floor ceilings and attic spaces in homes.
In comparison an inch of blown.
Spray foam pink fiberglas vs.
Houses in a cold climate should have a minimum of r 49 in the attic which is equivalent to approximately 16 of fiberglass insulation.
Effective r values for batt insulation derived from ashrae document heat transmission coefficients for walls roofs ceilings and floors 1996 good fair poor measured batt thickness inches effective r value 2 5 per inch effective r value 1 8 per inch effective r value 0 7 per inch.
Recommended home insulation r values.
If your home is in a warmer climate you require an r 38 or higher or about 12 more.