Description
Isotherm Composite is a composite roof insulation board combining the high thermal
properties of polyisocyanurate foam with the stable proven performance of perlite
insulations (or wood fiberboard) and a versatile organic/glass asphalt facer. Available in
48" x 48" and 48" x 96" boards in various thicknesses (see table).Uses
· A base for all BUR and single ply membranes.
· A high R-value insulation over any deck.
· Where UL Class A and FMRC Class 1 constructions are required.
Advantages
· Provides high performance insulation in all roofing assemblies.
· Permalite®
base resists warping, buckling, and shrinking for dimensional stability.
· Foam composite offers high thermal values.
Mechanical Attachment
For exact fastening recommendations, consult the GAF Materials Corporation GAFGLAS® or RUBEROID® Application and
Specifications Manuals.
Applicable Standards
Isotherm Composite Roof Insulation is in compliance with:
· Federal Specification HH-I-1972/GEN, "Insulation Board,
Thermal Polyurethane and Polyisocyanurated, Faced."
· UL Building Units (TIAR) as a Roof Deck Construction Material for
use in Construction Nos. 1, 2, 27, 157, and UL Fire Resistive Design No. P225.
· FMRC Class 1 Insulated Steel Deck and Concrete Constructions as
described in current FMRC Approval Guide.
| Thermal
and Physical Characteristics |
Nominal
Thickness* |
Conditioned
R-Value** |
Spanability
Max. Flute |
1.5"
1.7"
1.9"
2.2"
2.4"
2.7"
2.9"
3.1"
4.0" |
7.2
8.8
10.0
12.5
14.3
16.7
18.2
20.0
27.0 |
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" |
*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 procedure 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 1.7 lbs.
per cubic ft. |
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. |
|
GAF Materials Corporation