Roof construction details for CLTD tables
From ASHRAE (1989), with permission
Click here to see definitions of layer
codes and thermal properties.
Click here to see CLTD tables of roofs without suspended
ceilings.
Click here to see CLTD tables of roofs with suspended ceilings.
Roof No. |
Description |
Code number of layers |
1 |
steel sheet w/ 1" insulation |
A0 E2 E3 B5 A3 E0 |
2 |
1" wood w/ 1" insulation |
A0 E2 E3 B5 B7 E0 |
3 |
4 inches l.w. concrete |
A0 E2 E3 C14 E0 |
4 |
2" h.w. concrete w/ 1" insulation |
A0 E2 E3 B2 C12 E0 |
5 |
1" wood w/ 2 " insulation |
A0 E2 E3 B6 B7 E0 |
6 |
6" l.w. concrete |
A0 E2 E3 C15 E0 |
7 |
2.5" wood w/ 1" insulation |
A0 E2 E3 B5 B8 E0 |
8 |
8" l.w. concrete |
A0 E2 E3 C7 E0 |
9 |
4" h.w. concrete w/ 1" insulation |
A0 E2 E3 B5 C5 E0 |
10 |
2.5" wood w/ 2" insulation |
A0 E2 E3 B3 B8 E0 |
11 |
roof terrace system |
A0 E2 E3 B6 E2 E3 C5 E0 |
12 |
6" h.w. concrete w/ 2" insulation |
A0 E2 E3 B6 C13 E0 |
13 |
4" wood w/ 1" insulation |
A0 E2 E3 B2 B9 E0 |