| Physical
Properties |
| |
Units |
ASTM |
Results |
|
Flamespread* |
— |
E84 |
5-15 |
|
Coefficient
of thermal expansion |
in/(in)(F) |
D696 |
0.000035 |
|
Maximum
exposure temperature |
°F
°C |
—
— |
Up
to 167
U p to 75 |
|
Compressive
strength at 10% deflection |
psi |
D1621 |
10-14 |
|
Flexural
strength |
psi |
C203 |
25-30 |
|
Capillarity |
— |
— |
None |
|
Water
vapor transmission |
perm
in |
C344 |
1.2-3.0 |
| Water
absorption (by volume) |
% |
C272 |
Less
than 2.5 |
*This
numerical Flame Spread Rating is not
intended to reflect hazards presented
by this or any other material under
actual fire conditions.
The higher the R-value, the greater
the insulating power. Ask your seller
for the fact sheet on R-values.
Tested
by Underwriters Laboratories to provide
a flame spread rating of 5-15, well
below the 25 rating required by most
municipalities to qualify an interior
finish as acceptable. Suspend-a-Ceil'
drop in panels meet Federal Specification
HH-I-524C, Type I. This product conforms
to the Uniform Building Code (ICBO);
The Basic Building Code (BOCA); The
Standard Building Code (SBCCI), and
has F.H.A
|
|
Application
Instructions
Clips,
if used to prevent normal drafts from lifting the panels,
should limit the upward motion only, and permit the
panels to drop from the suspension system without restraint.
Painting or coating of the panels is not recommended
since this may hinder the ease of drop-out in the event
of a fire. However, if panels are to be painted, use
only rubber or water (latex) based paints.
Factory Mutual
SUSPENDED CEILINGS, PLASTIC
Plastic suspended ceilings of translucent or opaque panels are used to conceal ducts, sprinkler piping, lighting fixtures or for decorative purposes. All products are of low combustibility. Because they are designed to be heat sensitive, promptly moving out of their setting, they will not significantly interfere with the operation of automatic sprinklers located above. When other building components and occupancy do not require sprinkler protection, these products may be used without creating such a need.
Restraining clips must not be used to hold the panels in their metal suspension frame. Clips which have been tested and FM Approved may be used for this purpose. Painting or coating the panels is prohibited since this may insulate and therefore hinder the immediate drop-out response to the early stage of a fire. However, panels which have been tested and FM Approved with a factory-applied coating may be used.
The polystyrene ceiling tiles listed in Section B are expanded from the modified grade bead resins produced by the manufacturers listed in Section A. These products have met the fire test requirements of FM Approval Standard No. 4651.
Unless otherwise indicated in the listings, all polystyrene panels are nominal 1.0 lb/ft3 (16.0 kg/m3) density.
Northampton, MA 01062 
