Recommended Attic Insulation R Value Canada

After installing insulation in the existing cavities nail or screw strapping 2 x 2 or 2 x 3 on edge perpendicular to the rafters and studs.

Recommended attic insulation r value canada.

The table below shows what levels of insulation are cost effective for different climates and. R value is a measure of insulation s ability to resist heat traveling through it. Recommended home insulation r values. Just energy savings and better comfort for decades.

In such cases where r value is assigned this may decrease the r value requirement for batt insulation. The higher the r value the better the thermal performance of the insulation. Best of all there s typically no maintenance. Recommended r value for attic insulation canada the recommended r value for insulation of attics in canada depends on the area as it is a value that changes a lot from area to area.

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. And increase your home s value. Insulation level are specified by r value. Improve the insulation in your attic on your above grade walls in the basement and in exposed floors for a more comfortable and energy efficient home.

Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. Your home s r value score will guide you toward the type of insulation you need. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Foam plastic insulation on the interior of the building envelope must adhere to the requirements of protection of foamed plastics as per 9 10 17 10 of the national building code of canada.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level 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. In general an attic s r value should be between r 30 and r 49. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

In particularly cold climates you might go up to r 60. Inspecting your attic insulation. Recycled glass or sand that s melted and spun into fibers.