R Value For Concrete Basement Walls Ontario

The higher the r value the better the thermal performance of the insulation.

R value for concrete basement walls ontario.

Poured concrete or concrete block as the board material is fairly rigid. 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. Take advantage of concrete thermal mass. Rigid foam panels are also a good way to insulate on the inside of concrete basement walls.

Ontario building code 2017 solutions for basement walls slab insulation requirements david kelly sr. Account manager dow building solutions. 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. This method works best if the basement wall is even and vertical i e.

Top of foundation tie in with siding. 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. R value is a measure of insulation s ability to resist heat traveling through it.

Space your studs either 16 or 24 apart. Basement walls reference table 3 1 1 2 a ip zone 1 compliance packages. Recommended home insulation r values. 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.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. This will allow you to cut your batts to fit comfortably between them. In such cases where r value is assigned this may decrease the r value requirement for batt insulation.