R Value For Attic In Ontario

Recommended insulation levels for retrofitting existing wood framed buildings.

R value for attic in ontario.

Insulation r value is proportional to the insulating material being used. The recommended r value for attic insulation in ontario is between r 50 and 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. 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.

With an r value of 3 6 3 8 per square inch and its lack of toxicity for both you and your pets it is a solid choice. A bare concrete wall basement foundation rates at an insulation r value of about r 1 newly insulated attic rates at an insulation r value of r 40 or more. It means that different products require different densities to deliver the same r value. You will need a higher r value of insulation if you live in the north than if you live closer to the us border.

R29 was r19 basement walls. Each bag will have a coverage of 12 square feet if you want an r value of r 49. R31 was r28 walls above grade. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

Your home s age if your home is more than 10 years old you likely need more insulation. 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. The r value of the insulation for every inch of thickness depends on the type of insulation. There are many ways to retrofit a home with fiberglass rock wool.

Existing 3 4 inches of insulation. Achieving greater r values in exterior walls. R5 in my case doing renovations and additions i m concerned with table 2 1 1 10. Add insulation to attic.

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. Where you live different climates require different insulation r values. R20 was r12 below grade slab. The higher the r value the better the thermal performance of the insulation.

Which follows the same values as the zone 1 90 table ceiling with attic. The pre installation process can therefore be 0 83 per square foot if you opt for cellulose which translates to 830 for attic insulation only.