Minimum R Value For Attics Ontario

New construction with heating equipment afue or to 90.

Minimum r value for attics ontario.

The recommended r value for attic insulation in ontario is between r 50 and r 60. R 31 batt insulation r 5 codebord r 31 batt insulation r 10 codebord floors over unheated spaces. Know exactly how much you need with our project calculators. R20 was r12 below grade slab.

The higher the r value the greater the insulation performance. Existing 3 4 inches of insulation. R 50 batt or blown insulation. R 60 batt or blown insulation.

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 common insulations for attics in our area. R 31 batt insulation r 5 codebord r 31 batt insulation r 10 codebord walls above grade. New construction with heating equipment afue 78 90. Recommended insulation levels for retrofitting existing wood framed buildings.

R24 was r19 basement walls. R value measures how well certain building insulation materials can resist heat. 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. See the department of energy s doe ranges for recommended levels of insulation below.

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. 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. R values of common types of insulation the two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. 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.

The r value of the insulation for every inch of thickness depends on the type of insulation. When determining how much insulation you need don t guesstimate calculate. All insulation materials in ontario must meet requirements set out by the national government. Add insulation to attic.

R value roofs without attic space insulation above deck u 0 032 r 30 0 ci u 0 028 r 35 0 ci with attic space and other u 0 021 r 50 0 u 0 017 r 60 0 walls above grade above grade walls u 0 055 r 13 0 r 10 0 ci u 0 055 r 13 0 r 10 0 ci wall below grade. R31 was r28 walls above grade. Cathedral ceilings flat roofs. When insulation levels increase for attics in new homes most homeowners want to upgrade their attic to new code requirements with their existing setup.