R Value Of Concrete Wall Above Grade

A few of the walls in the planned finished portion will be against the poured cement basement walls.

R value of concrete wall above grade.

Insulation level are specified by r value. Concrete block wall with air in cavities r 2 0. Know exactly how much you need with our project calculators. The higher the r value the better the thermal performance of the insulation.

564 to obtain copies of this reference. 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. Concrete block wall with perlite in cavities r 2 9. Recommended home insulation r values.

When determining how much insulation you need don t guesstimate calculate. The minimum thermal resistance r value of the insulating materials installed in the wall cavity between the framing members and continuously on the walls shall be as specified in table c402 2 based on framing type and construction materials used in the wall assembly the r value of integral insulation installed in concrete masonry units cmu shall not be used in determining compliance with. Depending on the density of the blocks an 8 inch thick block wall without any other type of. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.

Above grade concrete wall including inside and outside air films r 1 2 for 6 inch r1 4 for 8 inch. The r value listed by pca for a normal weight 144 pcf 6 inch concrete wall is 1 23 and includes inside and outside air film resistances which contribute to overall thermal resistance. 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. Concrete block makes a cost effective and structurally sound wall but it has little thermal resistance.

R value measures how well certain building insulation materials can resist heat. The higher the r value the greater the insulation performance. The house is a few years old located in the 4a region close to the 5a region border in pa. The basement walls are 99 above grade ground.

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. Call pca at 847 966 6200 ext. R value is a measure of insulation s ability to resist heat traveling through it.