Minimum R Value For Attics Ontario

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.

Minimum r value for attics ontario.

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. Existing 2x4 walls got r14 roxul and an 1 foam on the face new walls are r 22 roxul there so much glass that putting a foam layer was a waste and the ceiling about r 60 blown total r 40 on top of the existing r 20 basement walls r 22 roxul. With my place i reinsulated the whole house this summer. All insulation materials in ontario must meet requirements set out by the national government.

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. Where you live different climates require different insulation r values. R value is a measure of insulation s ability to resist heat traveling through it. You will need a higher r value of insulation if you live in the northeast than if you live in southern california.

The higher the r value the better the thermal performance of the insulation. Know exactly how much you need with our project calculators. The recommended r value has been raised from r 50 to r 60 in order to increase the insulation of the attics. Insulation level are specified by r value.

The higher the r value the greater the insulation performance. Reducing electricity consumption in support of ontario s long term energy plan. There are many ways to retrofit a home with fiberglass and. Recommended home insulation r values.

When determining how much insulation you need don t guesstimate calculate. 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. Your home s age if your home is more than 10 year old you likely need more insulation.

R value measures how well certain building insulation materials can resist heat. Another area where the ontario building code has seen changes is in attic insulation requirements. 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.