architecture - engineering - construction
GAF Materials Corporation
Commercial Roofing Products
GAFTEMP Isotherm Roof Insulation
Commercial Roofing Products
GAFTEMP® Isotherm Roof
Insulation
Superior Thermal Performance
 Description
Isotherm is a rigid isocyanurate foam insulation with versatile organic/glass asphalt
facers on both sides that are compatible with most membranes. Available in 48" x
48" and 48" x 96" boards in various thicknesses and in complete tapered
systems.
Uses
· A thermally efficient roof insulation for most membranes over all structural systems.
· A highly effective insulation for thin- design limitations.
· Where FMRC Class 1 construction required.
Advantages
· The lightest weight for high R-value applications.
· The highest R-value when thickness is constrained by design considerations.
· The best possible fire ratings from UL and FMRC.
Applicable Standards
· Federal Specification HH-I-1972/GEN
· FMRC Class 1 construction, Uplift Resistance Classifications up to 1-180. See current
FMRC Approval Guide.
· UL as a Class A component of roofing systems.
Limitations
Isotherm insulation should NOT be subjected to the application of hot bitumen in excess of
450°F.
Mechanical Attachment
For exact fastening recommendations, consult the GAF Materials Corporation GAFGLAS®
or RUBEROID® Application and Specifications Manuals.
| Thermal and Physical Characteristics |
Nominal
Thickness* |
Conditioned
R-Value** |
Max.
Flute Spanability |
1.0"
1.1"
1.3"
1.4"
1.5"
1.6"
1.8"
1.9"
2.0"
2.1"
2.2"
2.3"
2.4"
2.5"
2.7"
2.8"
2.9"
3.0"
3.2"
3.3"
3.4"
3.5"
3.8"
4.0" |
6.0
6.7
8.3
9.0
10.0
10.8
12.5
13.2
14.3
15.0
15.6
16.7
17.3
18.2
20.0
20.5
21.0
21.7
23.3
24.1
25.0
25.8
28.2
30.2 |
2 5/8"
2 5/8"
3 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8"
4 3/8" |
*Thickness is as manufactured, not field laminated.
**R=1/C; conditioned R-Values of this product were determined by ASTM C518 in accordance
with the conditioning outlined in RIC/TIMA Technical Bulletin 281-1 and PIMA Technical
Bulletin Number 101. |
|
| Typical Physical Properties* |
| Property |
Test Method |
Value |
| Dimensional
Stability |
158°F/97%
R.H. |
Less
than 2%
linear change |
| Service
Temperature |
... |
100°F
to 250°F |
| Product
Density |
Nominal |
2
lbs. per
cubic foot |
| Compressive
Strength |
ASTM
D1621 |
16
psi minimum |
| Core
Foam Flame Spread |
ASTM
E84
(25 ft. tunnel test) |
25
maximum* |
| *These numerical ratings are not intended to reflect hazards presented by
this or any other material under actual fire conditions. |
| Note: Physical and thermal properties shown are based on data obtained under
controlled laboratory conditions and are subject to normal manufacturing tolerances. |
|
