Exterior Wall Insulation R Value Canada

R value is a standard unit of measurement for determining among many things how effective your insulation will be.

Exterior wall insulation r value canada.

Each type comes with unique advantages. 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. The higher the r value the better the thermal performance of the insulation.

Higher r value numbers mean that the insulating material resists the cold or heat from the outside better. 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. The r value of insulation is a value that is used to measure how well a specific type of insulation can resist heat flow the higher the r value the more effective the material is at preventing heat transfer. See the department of energy s doe ranges for recommended levels of insulation below.

Know exactly how much you need with our project calculators. R value is a measure of insulation s ability to resist heat traveling through it. 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.

The r refers to absolute thermal resistance. The table below shows what levels of insulation are cost effective for different climates and. The higher the r value the greater the insulation performance. 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.

You will still need to ensure the vapour barrier is sealed and will have to reposition such things as electrical switches and plugs. And increase your home s value. 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.

R value measures how well certain building insulation materials can resist heat. Products with a higher r value have a higher cost but have an increased capacity to resist heat flow and therefore provide greater insulation. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. 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.

Insulation level are specified by r value.