Technical Specifications

With the strength and support of the
Armstrong brand and our reputation for
quality and service, you and your customers
will “finish on top” with our line of Contractor
Series Ceilings.
Armstrong has a broad selection of
ceiling products for both new projects and
repair-and-replacement ceiling jobs. Our line
includes over 20 nationally-recognized
ceiling panel and grid products with the
visuals and performance that are preferred
by specifiers, owners and contractors.
From fire and sag resistance to meeting
specific sound control requirements,
Armstrong’s Contractor Series Ceilings
have the performance features required
for a variety of today’s home and business
space applications.
And, you’ll never face a project alone.
• Armstrong’s network of dealers are
trained to answer your questions about
Contractor Series Ceiling products.
• Armstrong’s Customer Focus Center at
1-877-ARMSTRONG is there to provide
you with the answers you need.
• Access to the most comprehensive
ceiling products web site at
armstrong.com is only a click away.
Once you begin working with Armstrong
through your building materials retailer, you’ll
instantly see the value and support we
provide our valued contractor customers.
For more information on any of
Armstrong’s Contractor Series Ceilings
products, call your local dealer or locate
your nearest building materials retailer
at armstrong.com.
Finish on top
with Armstrong
Contractor Series
Ceilings
Refers to the amount of light that is bounced back into the space after striking the
ceiling. Light reflectance is measured as a percentage. A light reflectance of .80 will reflect
80 percent of the light that hits the surface, while absorbing the other 20 percent. Light re-
flectance works well with all types of lighting, but best with indirect lighting.
Light reflectance brightens a room – providing up to 25% more usable light. It reduces eye
glare and eye strain and, in some cases, lowers lighting costs.
Refers to the resistance the ceiling panel has to sagging or warping within certain humidity
levels. Standard sag and humidity resistance will not provide resistance in high humidity
conditions. The ceiling panel can be installed in conditions where relative humidity does not ex-
ceed 70 percent. At 70 percent relative humidity the ceiling will not sag or warp.
Armstrong’s HumiGuard
®
Plus provides resistance that will reduce sagging or warping in
high humidity applications. The ceilings can be installed in areas up to 90 percent humidity, but
not over standing water or outdoors.
Ceilings with sag and warp resistance will remain flat and attractive when installed as di-
rected. HumiGuard
®
Plus ceilings can be installed before the building is enclosed, if needed.
The Noise Reduction Coefficient or NRC refers to the amount of noise that is absorbed. NRC
is measured in percentage. An NRC of .60 will absorb 60 percent of the sound that hits the
ceiling surface, while reflecting the other 40 percent. Armstrong’s ceilings line offers
panels with a maximum of .70 NRC.
Ceiling Attenuation Coefficient or CAC refers to the amount of noise that is blocked
from one room to the next. CAC is also measured in percentage. A CAC of .30 will block
30 percent of the noise, while transmitting the other 70 percent. A CAC of .35 is the
maximum percentage in the Armstrong product line.
Reduce sound distractions in a room or in adjacent rooms. An appropriate NRC or CAC or
combination can assist in obtaining room-to-room privacy with high performance acoustical
ceilings. When the ceiling panel also carries a UL – Underwriter’s Laboratories, Inc. –
certification for acoustics, precision is guaranteed.
Some Armstrong contractor ceilings contain BioBlock
®
– an antimicrobial treatment applied
to the face and back of the ceiling panels. The treatment provides resistance to the growth of
mold and mildew and odor- or stain-causing bacteria.
Ceiling panels treated with BioBlock
®
provide protection that will not favor the growth of
micro-organisms, especially in high-humidity applications.
All of Armstrong’s contractor ceilings are classified as Class A Fire Performance. Flame
Spread Class of the ceiling refers to the ability of the ceiling to lower the rate at which flames
spread during a fire.
Class A ceilings, by their composition, will hinder the speed at which flames spread should
there be a fire in the space. Hindering the speed of the flames allows more time for occupants
to escape the fire.
Fire Guard ceilings are formulated, tested and listed in specific UL – Underwriter’s Laborato-
ries, Inc. – time-design rated assemblies. The items are fire resistive when used in approved
UL assembly, including suspension system, light fixtures and diffusers and structural compo-
nents of the building.
The Fire Guard ceiling “system” forms a membrane to contain fire within a room. Depending
on the system and assembly, the design is given an hourly rating saving lives
and property.
ICON KEY
FINISHING
ON TOP
Light Reflectance
Sag and Humidity Resistance
Acoustics (NRC & CAC)
Mold and Mildew Inhibition
Class A Fire Performance
Fire Guard (Items 915 & 916)