Citadel Architectural Products, Inc.
3131-A North Franklin Road
Indianapolis, Indiana 46226
Phone: (317) 894-9400
(800) 446-8828
Fax: (317) 894-6333
(800) 247-2635
Web: www.citadelap.com
Email: info@citadelap.com
PANEL & SYSTEM
DESCRIPTION
PRODUCT NAME:
Envelope 2000®
Engineered Architectural Wall System
OVERVIEW:
Envelope 2000® is a fabricated wall
system utilizing a composite panel
made by laminating a prefinished
aluminum skin to a substrate of thermoset phenolic resin. A second
aluminum skin is added as a backer
and provides thermal stability and
panel balance.
Panels are furnished with a
strippable film on the painted surfaces
to protect the finish during shipment
and installation. Envelope 2000® is fabricated and
then attached to the substrate with a
series of aluminum extrusions.
The three basic attachment methods
for Envelope 2000® are the Reveal
System (RV) utilizing one piece
extruded aluminum moldings, the
Rout & Return System (RR) with
formed ‘pans’ and attachment
extrusions and the RainScreen
System (RS) utilizing formed ‘pans’,
attachment extrusions and featuring
‘dry’ joints.
BASIC USES & APPLICATIONS:
As a high end fabricated system,
Envelope 2000® is designed for use
as an exterior cladding on walls,
canopies, fascia, and accent bands.
Envelope 2000® is typically used on
medium to high rise buildings, such
as office towers, retail complexes,
educational buildings, medical
facilities, etc...
GENERAL LIMITATIONS:
Envelope 2000® is intended for use
as an exterior cladding. It is not
eligible for use as a structural
element of a wall assembly. Envelope
2000® should not be used in
applications where the slope
exceeds 25° from vertical.
SYSTEM FINISHES:
Envelope 2000® comes standard with
a smooth aluminum skin. Standard
and metallic colors are furnished with
a durable Kynar 500® coating.
Anodized finishes are available as a
standard finish. Custom colors are
also available to match customer’s
standard.
Moldings (Reveal System) are
coated using a Kynar 500® paint
system and can be painted to match
any standard or custom color.
INSTALLATION
OVERVIEW
REVEAL SYSTEM (RV):
Utilizing one piece extruded aluminum
moldings, this is a barrier
system that features a progressive
installation. The moldings are
mechanically fastened to the
substrate. The panels are then
inserted into the moldings, along with
sealant and attached to the substrate
using construction adhesive at
intermediate locations. Reveal (1/2”
typical, 3” also available) and batten
profile moldings are standard.
ROUT & RETURN SYSTEM (RR):
Barrier system in which panels are
fabricated and formed into ‘pans’ and
then ‘hung’ on the substrate using
aluminum extrusions. All fasteners
are concealed and panel joints (1/2”
reveal typical) are finished with an
approved sealant.
RAINSCREEN SYSTEM (RS):
Based on the ‘rainscreen principle’,
this system allows incidental water to
enter the cladding cavity, but then be
drained through the system via
weepholes. Also utilizing formed
panels, this system is attached using
aluminum extrusions. Panel joints
are finished using color matched or
complementary accent strips that
‘float’ in the extrusions providing a
reveal from 1/2” to 12”.
TABLE 1. COMPOSITION & MATERIALS¹:
Component |
Standard (in) |
Metric (mm) |
Prefinished Smooth Aluminum Face
- Thermoset Phenolic Resin Core²
- Primed Smooth Aluminum Backer
|
.024”(min)
.105”
.010” |
.609mm
2.67mm
.254mm
|
¹ Technical Properties are based upon the Typical Composition. Selecting
optional components may
alter these properties.
² 4mm is the most common thickness for Envelope 2000®. 3mm and 6mm (nominal)
are also available.
FEATURES & BENEFITS:
As a complete exterior cladding system, Envelope 2000® offers a number of
benefits to the building owner, architect, and installer including:
- High-Tech Appearance
Smooth aluminum skins and clean
lines make Envelope 2000® an
excellent choice for high profile
projects where a progressive
aesthetic detail is desired. - Versatile Installation
With three different attachment
options, virtually any look can
be created using different shadow
line sizes and treatments at the
panel joints.
Curveable
Along with various shadow lines,
Envelope 2000® can also add
interest to your project with long
sweeping curves or tight, crisp
column covers.
Thermal Stability
Unlike other cladding solutions,
Envelope 2000® systems remain
rigid and stable even during
seasonal heating and cooling
thermal cycles.
Durable
An innovative thermoset phenolic
resin core provides these panels
with superior impact and dent
resistance.
- Low Maintenance
Most foreign matter can be
cleaned from surface with mild
detergents; can be incorporated
into yearly building washing
schedule.
TABLE 2. PANEL WEIGHT & THICKNESS:
| Component
|
Standard (in) |
Metric (mm) |
Panel Weight¹
Nominal Thickness |
1.33 lbs/ft²
1/8” |
6.47 kg/m²
4mm |
TABLE 3. PANEL PERFORMANCE:
| Property |
Test |
Value |
Unit |
| R-Value |
--- |
0.05 |
°F ft²/BTU |
| Flame Spread |
ASTM E84 |
Class A |
--- |
| Peel
Strength |
ASTM
D1781 |
34.5 |
lb-in/lb |
| Stiffness
(EI)¹ |
ASTM
E72 |
1.27 E+4 |
lb-in²/ft
width |
| Allowable
Bending Moment¹ |
ASTM
E72 |
1.82E+1 |
lb-ft/ft
width |
| Tensile
Yield¹ |
ASTM
E72 |
7.34E+3 |
lb/ft
width |
| Ultimate
Tensile¹ |
ASTM
E72 |
1.04E+4 |
lb/ft
width |
| Coefficient
Of Thermal |
ASTM
D1237 |
1.11E-5 |
in/in/°F |
| Expansion |
|
|
|
| Ignition
Temperature |
ASTM
D1929 |
900 |
° F |
¹ Weight and testing based upon panels using an .024” smooth
face
skin and an .010” smooth back skin.
| MATERIAL TOLERANCES: |
SIZES AVAILABLE: |
| Thickness: |
±1/32” (±0.79mm) |
48” x 96” |
(1219mm x 2438mm) |
| Length Dim: |
+0, -1/16” (+0, -1.59mm) |
48” x 120” |
(1219mm x 3048mm) |
| Width Dim: |
+0, -1/16” (+0, -1.59mm) |
48” x 144” |
(1219mm x 3658mm) |
| Squareness: |
1/64” (0.4mm) per |
60” x 96” |
(1524mm x 2438mm) |
| |
lineal foot |
60” x 120” |
(1524mm x 3048mm) |
| |
60” x 144” |
(1524mm x 3658mm) |
| |
|
Envelope 2000® is supplied with
clean,
machine trimmed edges. |
Cut-to-size panels are also available in
virtually any size up to 60” x 144”. |
| PANEL FINISH SYSTEMS: |
| Standard Textured: |
Coil Coated |
| |
Kynar 500® |
| Custom Textured: |
Spray Applied |
| |
Kynar 500® |
| |
|
| STANDARD WARRANTY: |
| |
| Panel Warranty: |
5 Years |
| Kynar 500® Finish: |
20 Years
No change greater
than 8 for chalk,
5 E units for fade |
| Anodized Finish: |
20 Years (prorated) |
| |
|
| CODE CERTIFICATION¹: |
| |
| ICBO (International Conference Of
Building Officials) - #PFC-5792 |
| |
| BOCA (Building Officials Code
Administrators) - #21 • 08 |
|
|
| |
| SBCCI PST & ESI (Southern
Building Code Congress International,
Public Safety Testing & Evaluation
Services Inc.) - #2046 |
| ¹ Envelope 2000® RR attachment
system. |