Recommended Attic Insulation R Value

The recommended r value for attic insulation in ontario is between r 50 and r 60.

Recommended attic insulation r value.

The amount of insulation recommended for your home will vary depending on a number of factors. In particularly cold climates you might go up to r 60. Recommended home insulation r values. Add the right kind of insulation.

The higher the r value the better the thermal performance of the insulation. The r value of the insulation for every inch of thickness depends on the type of insulation. The transfer of heat by contact with solid objects such as the ceiling walls or floor is called conduction see figure 1. The higher the r value the better the thermal performance of the insulation.

The table below shows what levels of insulation are cost effective for different climates and. Insulation levels are specified by r value. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. R value is a measure of insulation s ability to resist heat traveling through it.

You can achieve better thermal performance in your attic by adding an additional layer 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. Achieving greater r values in exterior walls. Insulation level are specified by r value.

R values of common types of insulation. 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. A good thermal barrier along a building envelope such as high r value insulation in the walls attic and raised floors as well as multi paned glass help to reduce conduction. The higher the r value the better the thermal performance of the insulation.

The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. Your home s r value score will guide you toward the type of insulation you need. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. R value is a measure of insulation s ability to resist heat flow.

Where you live different climates require different insulation r values. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Recycled glass or sand that s melted and spun into fibers.