R Value Table Concrete Wall

8 thick concrete slab or foundation wall has an r value of about 1 04 30 while lightweight aggregate filled 8 thick concrete has an r value of about 2 18 30.

R value table concrete wall.

Tables of building material r values. The r values for specific assemblies like doors and glazing in the table below are generalizations because they can vary significantly based on special materials that the manufacturer uses. Insulation values forselected materials. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.

The higher the r value the greater the insulation performance. Table 3 shows the approximate percentage of grouted and ungrouted wall area for different vertical and horizontal grout spacings which can be used to. R value measures how well certain building insulation materials can resist heat. Thismethod of determining r values do not apply to dynamic mass walls such as the allwall system.

System description clear wall r value rcw whole wall r value rww rww rcw x 100 1. When determining how much insulation you need don t guesstimate calculate. Typical residential weight concrete 8 wall r 2 5. 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.

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. This is how the dynamic mass wallperforms in whole wall lab tests and in the constructed home. Table 2 lists calculated u factors and r values of various thicknesses of concrete masonry walls for concrete densities of 85 to 135 lb ft 1 362 to 2 163 kg m with various core fills. For instance using argon gas in a double pane insulating glass unit will dramatically improve the r value.

The following table is in metric form. Click here to go to our calculator to understand the real r value of a ceiling system or wall system with gaps in the insulation. Know exactly how much you need with our project calculators. Todetermine the value for allwall.

Add the individual components and thenmultiply by 11 and divide by 5 per fsec. Concrete sand gravel aggregate. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. R values for wall systems no.