Garage Insulation R Value Canada

It s also important to realize the value of air sealing in conjunction with insulation.

Garage insulation r value canada. Conditions apply for insulation of attached garages. In canada provincial building codes specify minimum r rsi values for new construction. As a fast option to increase the wall rsi value while reducing thermal bridging install at least rsi 0 88 to 1 76 r 5 to 10 rigid board insulation directly to the wall finish and cover it with drywall. 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 in your attic to reach r 30 if you live in zones 2 or 3.

R value is a measure of insulation s ability to resist heat traveling through it. Insulate the garage s ceiling by using the recommended r value for your area as advised by the department of energy s oak ridge laboratory. The table below shows what levels of insulation are cost effective for different climates and. Thus the standard r value varies by climate temperature and specific conditions.

The higher the r value the better the thermal performance of the insulation. For instance r 16. You will still need to ensure the vapour barrier is sealed and will have to reposition such things as electrical switches and plugs. By using an insulating material you can reduce the transmission of heat or cold.

Recommended home insulation r values. Exterior walls if your exterior walls are constructed from 2 by 4 inch studs the most insulation that can go into the wall while retaining its r value is r 13 or r 15 as these are both made to fit a cavity. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. This number is calculated as a function of thickness of the insulator and its physical properties.

If there s a room above the garage it s going to be cold because there s a lack of insulation or at least improper insulation. Garages typically aren t built to be airtight and have lots of air gaps to the outdoors. Where batt loose fill insulation is used provide no less than full cavity insulation. 2 x 6 wall rsi 3 52 r 20 nominal or 2 x 4 wall rsi 2 11 r12 nominal.

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. Insulation level are specified by r value. The recommended r value for basement insulation in north america is r12 but the r value in insulation is lowered substantially when there is air or moisture leaks. This is why we spray foam garages.

You can insulate the walls ceiling and door of the garage to the highest r value possible but if you fail to fill those air gaps you ll still be wasting a lot of heat. Finally the larger the number the better the thermal insulation of the door. Thus r value is used to show the energy efficiency of a product.