R Value Table Concrete Wall

R values for wall systems no.

R value table concrete wall.

The higher the r value the greater the insulation performance. For instance using argon gas in a double pane insulating glass unit will dramatically improve the r value. When determining how much insulation you need don t guesstimate calculate. The following table is in metric form.

Tables of building material r values. 12 two core insulating units concrete. 0 13 0 64 30. Todetermine the value for allwall.

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. 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. R value measures how well certain building insulation materials can resist heat. Add the individual components and thenmultiply by 11 and divide by 5 per fsec.

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. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. 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 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.

Typical residential weight concrete 8 wall r 2 5. 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. Civil engineering and architecture r value and densities chart page 3 the following table was taken from the home energy website.

System description clear wall r value rcw whole wall r value rww rww rcw x 100 1. Table 3 shows the approximate percentage of grouted and ungrouted wall area for different vertical and horizontal grout spacings which can be used to. Insulation values forselected materials. 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.