It means that different products require different densities to deliver the same r value.
R value for attic in ontario.
Your home s age if your home is more than 10 years old you likely need more insulation.
Achieving greater r values in exterior walls.
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.
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.
You will need a higher r value of insulation if you live in the north than if you live closer to the us border.
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 below grade wall c 0 092 2 r 10 0 ci c 0 092 2 r 10 0.
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.
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.
R31 was r28 walls above grade.
The higher the r value the better the thermal performance of the 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.
R20 was r12 below grade slab.
Existing 3 4 inches of insulation.
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.
Each bag will have a coverage of 12 square feet if you want an r value of r 49.
R50 was r40 ceiling without attic.
Where you live different climates require different insulation r values.
R5 in my case doing renovations and additions i m concerned with table 2 1 1 10.
R29 was r19 basement walls.
In such cases where r value is assigned this may decrease the r value requirement for batt insulation.
Which follows the same values as the zone 1 90 table ceiling with attic.
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.
The recommended r value for attic insulation in ontario is between r 50 and r 60.
Insulation r value is proportional to the insulating material being used.
Add insulation to attic.
There are many ways to retrofit a home with fiberglass rock wool.
