Attic Insulation R Value Chart Canada

Fiberglass insulation for most projects comes in batts and rolls with r values ranging from r 8 to r 49.

Attic insulation r value chart canada.

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. You will need a higher r value of insulation if you live in the northeast than if you live in southern. Input length width and desired r value of the area to be insulated. Insulation level are specified by r value.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. Click the button to calculate the depth in inches and pounds of total insulation required for this job. Insulation project calculator how to install naima r value certification product training videos colab learning video library for pros distributor locator why owens corning insulation propink vs. The table below shows what levels of insulation are cost effective for different climates and.

Professional installers and diyers also can use blown in fiberglass insulation in an attic to achieve nearly any r value. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. How much insulation should you install. This calculator is to be used as an estimating tool only.

In general to optimally isolate an attic on average an r value of the insulation is required ranging from r 50 to r 60. 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. Note from this chart that the ideal r value differs for each part of your home.

Chart courtesy of energy star. Recommended home insulation r values. Where you live different climates require different insulation r values. 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.

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7. The amount of insulation recommended for your home will vary depending on a number of factors. The insulation levels of an attic or of any part of a house are understood through the r value that is the value with which the insulating material is resistant to heat flow. R value is a measure of insulation s ability to resist heat traveling through it.