Recommended Attic Insulation R Value Canada

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Recommended attic insulation r value canada.

Inspecting your attic insulation. If your attic is not too cramped consider adding strapping onto the rafter bottoms and wall studs to allow for more insulation up to the recommended minimum level for attic insulation if possible. Recycled glass or sand that s melted and spun into fibers. Your home s r value score will guide you toward the type of insulation you need.

In such cases where r value is assigned this may decrease the r value requirement for batt 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 higher the r value the better the thermal performance of the insulation. R value is a measure of insulation s ability to resist heat traveling through it.

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. The table below shows what levels of insulation are cost effective for different climates and. The province the city and the area greatly influence the difference in r value for the insulation of an attic. 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.

In particularly cold climates you might go up to r 60. Insulation level are specified by r value. 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. And increase your home s value.

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. 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. Recommended home insulation r values. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

In general an attic s r value should be between r 30 and r 49. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. See the department of energy s doe ranges for recommended levels of insulation below.