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| Rboard R-Values & Thicknesses |
Standard
Thickness |
in. |
1/2" |
5/8" |
3/4" |
1" |
1.5" |
2.0" |
2.5" |
3.0" |
3.5" |
| mm. |
13 |
16 |
19 |
25 |
38 |
51 |
63.5 |
76.2 |
88.9 |
| R-Value* |
3.0 |
3.8 |
4.5 |
6.0 |
9.0 |
12.1 |
15.3 |
18.5 |
21.7 |
| RSI |
.53 |
.67 |
.79 |
1.06 |
1.58 |
2.13 |
2.69 |
3.26 |
3.82 |
| Pieces per Pkg. |
42 |
34 |
29 |
22 |
15 |
11 |
18 |
15 |
13 |
| 4´ x 8´ Size - Sq. Ft./Pkg. |
1344 |
1088 |
928 |
704 |
480 |
352 |
576 |
480 |
416 |
| 4´ x 9´ Size - Sq. Ft./Pkg. |
1512 |
1244 |
1044 |
792 |
540 |
396 |
648 |
540 |
468 |
| * Conditioned thermal values were determined by ASTM Test Method C 518 at 75° F mean temperature. All test specimens were conditioned in accordance with procedures outlined in ASTM C 1289-02, Section 11.1.2.1 | |
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