Recommended Attic Insulation R Value Canada

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.

Recommended attic insulation r value canada.

And increase your home s value. In general an attic s r value should be between r 30 and r 49. 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. 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.

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. The higher the r value the better the thermal performance of the insulation. Best of all there s typically no maintenance. 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.

Recycled glass or sand that s melted and spun into fibers. Just energy savings and better comfort for decades. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. The province the city and the area greatly influence the difference in r value for the insulation of an attic.

In particularly cold climates you might go up to r 60. Insulation level are specified by r 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. 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. 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. The table below shows what levels of insulation are cost effective for different climates and. See the department of energy s doe ranges for recommended levels of insulation below.

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