R Value Table Concrete Wall

The following table is in metric form.

R value table concrete wall.

Todetermine the value for allwall. Tables of building material r values. Table 3 shows the approximate percentage of grouted and ungrouted wall area for different vertical and horizontal grout spacings which can be used to. When determining how much insulation you need don t guesstimate calculate.

Thismethod of determining r values do not apply to dynamic mass walls such as the allwall system. For instance using argon gas in a double pane insulating glass unit will dramatically improve the r value. 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.

This is how the dynamic mass wallperforms in whole wall lab tests and in the constructed home. 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. Add the individual components and thenmultiply by 11 and divide by 5 per fsec. 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.

System description clear wall r value rcw whole wall r value rww rww rcw x 100 1. 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 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. Concrete sand gravel aggregate.

R values for wall systems no. Civil engineering and architecture r value and densities chart page 3 the following table was taken from the home energy website. 0 13 0 64 30. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers.

The higher the r value the greater the insulation performance. R value measures how well certain building insulation materials can resist heat. 12 two core insulating units concrete. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.