Exterior Wall Insulation R Value Canada

The r refers to absolute thermal resistance.

Exterior wall insulation r value canada.

Just energy savings and better comfort for decades. Products with a higher r value have a higher cost but have an increased capacity to resist heat flow and therefore provide greater insulation. See the department of energy s doe ranges for recommended levels of insulation below. In such cases where r value is assigned this may decrease the r value requirement for batt insulation.

Higher r value numbers mean that the insulating material resists the cold or heat from the outside better. Each type comes with unique advantages. Best of all there s typically no maintenance. R value is a standard unit of measurement for determining among many things how effective your insulation will be.

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. Recommended home insulation r values. R value is short for resistance value and is closely related to the metric unit of rsi windows also have a specific r value associated with how well they keep heat in although the heat.

The higher the r value the better the thermal performance of the insulation. Thickness density and type of materials are some factors that contribute to. 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. Know exactly how much you need with our project calculators.

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. R value is a measure of insulation s ability to resist heat traveling through it. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior. You will still need to ensure the vapour barrier is sealed and will have to reposition such things as electrical switches and plugs.

When determining how much insulation you need don t guesstimate calculate. 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. Choose from three types of insulating foam core boards for wall insulation. Insulation level are specified by r value.

The higher the r value the greater the insulation performance.