Exterior Wall Insulation R Value Canada

When determining how much insulation you need don t guesstimate calculate.

Exterior wall insulation r value canada.

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. And increase your home s value. Insulation level are specified by r value.

The r refers to absolute thermal resistance. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. As a fast option to increase the wall rsi value while reducing thermal bridging install at least rsi 0 88 to 1 76 r 5 to 10 rigid board insulation directly to the wall finish and cover it with drywall. 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 measures how well certain building insulation materials can resist heat. 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. The table below shows what levels of insulation are cost effective for different climates and. Zip system r sheathing is the simple all in one structural panel with built in exterior insulation.

Know exactly how much you need with our project calculators. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. Just energy savings and better comfort for decades. 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. You will still need to ensure the vapour barrier is sealed and will have to reposition such things as electrical switches and plugs. Higher r value numbers mean that the insulating material resists the cold or heat from the outside better. R value is a measure of insulation s ability to resist heat traveling through it.

Thickness density and type of materials are some factors that contribute to. The higher the r value the greater the insulation performance. Note from this. Best of all there s typically no maintenance.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3.