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.
Recommended attic insulation r value canada.
R value is a measure of insulation s ability to resist heat traveling through it.
See the department of energy s doe ranges for recommended levels of insulation below.
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.
Insulation level are specified by r value.
The province the city and the area greatly influence the difference in r value for the insulation of an attic.
And increase your home s 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.
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.
In such cases where r value is assigned this may decrease the r value requirement for batt insulation.
These r values are a sum meaning this should be the total r value once you add up the entire depth of 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.
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.
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.
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 higher the r value the better the thermal performance of the insulation.
Recommended home insulation r values.
Your home s r value score will guide you toward the type of insulation you need.
Inspecting your attic insulation.
In general an attic s r value should be between r 30 and r 49.
Just energy savings and better comfort for decades.
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.
In particularly cold climates you might go up to r 60.
