R Value Table Concrete Wall

Tables of building material r values.

R value table concrete wall.

System description clear wall r value rcw whole wall r value rww rww rcw x 100 1. Typical residential weight concrete 8 wall r 2 5. Know exactly how much you need with our project calculators. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers.

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. 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. Add the individual components and thenmultiply by 11 and divide by 5 per fsec. 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.

For instance using argon gas in a double pane insulating glass unit will dramatically improve the r value. Table 3 shows the approximate percentage of grouted and ungrouted wall area for different vertical and horizontal grout spacings which can be used to. Civil engineering and architecture r value and densities chart page 3 the following table was taken from the home energy website. Thismethod of determining r values do not apply to dynamic mass walls such as the allwall system.

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. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. R value measures how well certain building insulation materials can resist heat. 0 13 0 64 30.

12 two core insulating units concrete. The higher the r value the greater the insulation performance. Concrete sand gravel aggregate. When determining how much insulation you need don t guesstimate calculate.

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. Todetermine the value for allwall. Insulation values forselected materials. The following table is in metric form.