Minimum R Value For Attics Ontario

The change that occurred in the attic insulation in the ontario building code was in the minimum required r value.

Minimum r value for attics ontario.

With my place i reinsulated the whole house this summer. The recommended r value has been raised from r 50 to r 60 in order to increase the insulation of the attics. The higher the r value the greater the insulation performance. Recommended home insulation r values.

R value roofs without attic space insulation above deck u 0 032 r 30 0 ci u 0 028 r 35 0 ci. Minimum rsi value of assembly 2 zone 1 less than 5000 degree days zone 2. 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. 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.

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. When insulation levels increase for attics in new homes most homeowners want to upgrade their attic to new code requirements with their existing setup. Another area where the ontario building code has seen changes is in attic insulation requirements. Insulation level are specified by r value.

R value measures how well certain building insulation materials can resist heat. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. 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. Reducing electricity consumption in support of ontario s long term energy plan.

It is an easy pitch for an insulation sales person to make but not all homes should have a simple r 50 or r 60 attic increase using fluffy blown in fiberglass or cellulose which are the most. Know exactly how much you need with our project calculators. There are many ways to retrofit a home with fiberglass and. Where you live different climates require different insulation r values.

When determining how much insulation you need don t guesstimate calculate. Your home s age if your home is more than 10 year old you likely need more insulation. All insulation materials in ontario must meet requirements set out by the national government.