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.
Ceiling insulation r value ontario.
R values of common types of insulation.
The building code in ontario evolves over time to incorporate new standards and practices in the industry.
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.
In such cases where r value is assigned this may decrease the r value requirement for batt insulation.
In this post we will look at two key ontario building code changes for home regarding insulation requirements continuous insulation and attic insulation.
The two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting.
Recommended home insulation r values.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
All insulation materials in ontario must meet requirements set out by the national government.
To be available on the market manufacturers take care of this step before their products are even available which is why it s important to ensure you re buying new insulation and not dead stock found in someone s garage.
R value is a measure of insulation s ability to resist heat traveling through it.
R value measures how well certain building insulation materials can resist heat.
When determining how much insulation you need don t guesstimate calculate.
Know exactly how much you need with our project calculators.
Continuous insulation this refers to a monolithic.
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.
You may or may not be aware that insulation codes have changed for all new builds with permits issued after 2016.
The table below shows what levels of insulation are cost effective for different climates and.
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.
The r value of the insulation for every inch of thickness depends on the type of insulation.
The higher the r value the greater the insulation performance.
The recommended r value for attic insulation in ontario is between r 50 and r 60.
