Minimum Attic Insulation Ontario

Attic insulation value requirements have been raised so that the density for new homes and additions in ontario now has been raised from r 50 to r 60.

Minimum attic insulation ontario.

You may or may not be aware that insulation codes have changed for all new builds with permits issued after 2016. The ontario building code access 9 19 2 1. The two most important changes in the code for insulation have to do with continuous insulation throughout the building and increasing attic insulation from r 50 to r 60. The change that occurred in the attic insulation in the ontario building code was in the minimum required r value.

Beam and floor joist spans are very adequate by todays standards. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Continuous insulation this refers to a monolithic.

R value is a measure of insulation s ability to resist heat traveling through it. Inspecting your attic insulation. Ontario building code sb 12 insulation requirement increases since 2x6 construction with 2 centers i ve always layed our so that everything is lined up from the foundation to the truss. The ontario building code act is a legal framework set up by the provincial government to establish minimum building standards and it applies to any new builds renovations or change of use construction.

Another area where the ontario building code has seen changes is in attic insulation requirements. The higher the r value the better the thermal performance of the insulation. And with raised heals on the truss there s plenty of insul. Insulation level are specified by r value.

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. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Access 1 everyattic or roof space shall be provided with an access hatch where the attic or roof space a measures not less than i 10 m in area ii 1 000 mm in length or width and iii 600 mm in height over at least the area described in subclauses i and ii or. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

The recommended r value has been raised from r 50 to r 60 in order to increase the insulation of the attics.