R Value Of Concrete Wall Above Grade

R value is a measure of insulation s ability to resist heat traveling through it.

R value of concrete wall above grade.

Insulation level are specified by r value. Know exactly how much you need with our project calculators. Concrete and block walls. 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.

Concrete block wall with air in cavities r 2 0. Concrete block makes a cost effective and structurally sound wall but it has little thermal resistance. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. 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.

Recommended home insulation r values. 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. 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. The higher the r value the greater the insulation performance.

Concrete block wall with perlite in cavities r 2 9. Currently there is insulation on the basement walls. The basement walls are 99 above grade ground. R inch r thick ness insulation materials fiberglass batt 3 14 fiberglass blown attic 2 20 1 fiberglass blown wall 3 20 rock wool batt 3 14 rock wool blown attic 3 10 rock wool blown wall 3 03 cellulose blown attic 3 13 cellulose blown wall 3 70 vermiculite 2 13 air entrained concrete 3 90 urea terpolymer foam 4 48.

The house is a few years old located in the 4a region close to the 5a region border in pa. Call pca at 847 966 6200 ext. R value measures how well certain building insulation materials can resist heat. The higher the r value the better the thermal performance of the insulation.

Depending on the density of the blocks an 8 inch thick block wall without any other type of. Above grade concrete wall including inside and outside air films r 1 2 for 6 inch r1 4 for 8 inch. When determining how much insulation you need don t guesstimate calculate.