Attic Insulation R Value Chart Canada

Recommended home insulation r values.

Attic insulation r value chart canada.

Click the button to calculate the depth in inches and pounds of total insulation required for this job. Insulation level are specified by r value. In general to optimally isolate an attic on average an r value of the insulation is required ranging from r 50 to r 60. 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.

Input length width and desired r value of the area to be insulated. 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. As a benchmark one inch of solid wood has an r value of 1. In such cases where r value is assigned this may decrease the r value requirement for batt insulation.

The amount of insulation recommended for your home will vary depending on a number of factors. You will need a higher r value of insulation if you live in the northeast than if you live in southern. Fiberglass insulation for most projects comes in batts and rolls with r values ranging from r 8 to r 49. Spray foam pink fiberglas vs.

The table below shows what levels of insulation are cost effective for different climates and. 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. 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. Chart courtesy of energy star.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. How much insulation should you install. 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. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3.

Where you live different climates require different insulation r values. Note from this chart that the ideal r value differs for each part of your home. R value is a measure of insulation s ability to resist heat traveling through it. The higher the r value the better the thermal performance of the insulation.