Like us on
Facebook

Insulation R-Value

Insulation R-value is a measure of thermal resistance used in the building and construction industry. The R-value being discussed is the unit thermal resistance. This is used for a unit value of any particular material. Below is the table of insulation R-value for Atlas RBoard Rigid Foam Insulation. The higher the number, the better the building insulation's effectiveness.


Standard Thickness3 in 0.5 0.75 1.0 1.5 2.0 2.5 3.0 3.5
mm 13 19 25 38 51 64 76 89
R-value1,2 3.0 4.5 6.0 9.0 12.1 15.3 18.5 21.7
RSI .53 .79 1.06 1.58 2.13 2.69 3.26 3.82
Pieces Per Package 45 31 23 31 23 18 15 13
4' x 8' Size - sq. ft./Pkg 1440 992 736 992 736 576 480 416
4' x 9' Size - sq. ft./Pkg 1620 1116 828 1116 828 648 540 468
1    Conditioned thermal values were determined by ASTM Test Method C518 at 75° mean temperature.
Test specimens were conditioned in accordance with procedures outlined in ASTM C1289, Section 11.1.2.1
2    “R” means resistance to heat flow. The higher the R-value, the greater the insulating power.
3    Other sizes available upon request. Contact your local Atlas sales office.
 

Atlas Roofing Corporation social networking is a convenient way to stay connected with the latest Atlas updates, news and events. Visit us at these social networking portals. Find Us On Facebook Watch Us On You Tube Follow Us On Twitter

Polyiso Wall Insulation