R Value For Concrete Basement Walls Ontario

Poured concrete or concrete block as the board material is fairly rigid.

R value for concrete basement walls ontario.

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. Recommended home insulation r values. Rigid foam panels are also a good way to insulate on the inside of concrete basement walls. This will allow you to cut your batts to fit comfortably between them.

Top of foundation tie in with siding. Space your studs either 16 or 24 apart. Secure rigid and moisture impermeable insulation panels to the concrete using mechanically attached fastening strips and then protect the assembly by attaching 12 7 mm in gypsum drywall to the. Account manager dow building solutions.

Take advantage of concrete thermal mass. In such cases where r value is assigned this may decrease the r value requirement for batt insulation. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Ontario building code 2017 solutions for basement walls slab insulation requirements david kelly sr.

The r value of an uninsulated 8 inch thick basement wall built using normal weight concrete is 1 35 based on data from the 1993 american society of heating refrigeration and air conditioning engineers handbook. Insulation level are specified by 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 in your attic to reach r 30 if you live in zones 2 or 3. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.

This method works best if the basement wall is even and vertical i e. Basement walls reference table 3 1 1 2 a ip zone 1 compliance packages. Icf s have high effective r values and are mold and mildew resistant but if you re on tight budget the cost of icf is about 20 to 40 more expensive than conventional methods of framing and insulating.