Attic Insulation R Value Chart Canada

Professional installers and diyers also can use blown in fiberglass insulation in an attic to achieve nearly any r value.

Attic insulation r value chart canada.

The higher the r value the better the thermal performance of the insulation. You will need a higher r value of insulation if you live in the northeast than if you live in southern. Note from this chart that the ideal r value differs for each part of your home. This calculator is to be used as an estimating tool only.

R value is a measure of insulation s ability to resist heat traveling through it. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. Input length width and desired r value of the area to be insulated.

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. 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. The amount of insulation recommended for your home will vary depending on a number of factors. As a benchmark one inch of solid wood has an r value of 1.

Insulation level are specified by r value. Where you live different climates require different insulation r values. The table below shows what levels of insulation are cost effective for different climates and. Recommended home insulation r values.

Spray foam pink fiberglas vs. In general to optimally isolate an attic on average an r value of the insulation is required ranging from r 50 to r 60. 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. Chart courtesy of energy star.

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