Viracon Insulating Glass
description
Transcript of Viracon Insulating Glass
insulatingglassspecs &tech
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controlling the temperaturewemake you feel comfortable
2
IWhy Viracon?
For over 37 years,
architects, designers
and contactors
throughout the world
have come to rely on
our proven expertise
to make Viracon the
company to go to
when it comes to
exploring a variety of
glazing options. We
invite you to sit down,
tell us your thoughts,
and together we’ll
come up with a way
to make it all work.
Seven World Trade Center
New York, New York
Architect: Skidmore Owings & Merrill LLP
Glazing Contractor: Permasteelisa
Cladding Technologies, Ltd.
Glass Type: VRE15-59
Photographer: Greg West Photography
Viracon Insulating Glass is available in
a wide variety of choices using tints,
silk-screened patterns and Low-E and
reflective coatings to achieve the specific
designs, transmission levels and the
solar control options you’re looking for.
We welcome the challenge to help you
spec Viracon Insulating Glass in new and
imaginative ways to get the perfect com-
bination of aesthetics and performance.
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viraconsultingtFIELD SALES REPRESENTATIVES
We’re here to help with design assistance, budget costing, return on
investment costing, spec writing and review as well as act as a liaison
between architects and glazing contractors. We also work closely with
the glazing contractor to offer assistance with initial costs, final pricing
negotiations, product information and job site inspections. Just ask.
ACCOUNT REPRESENTATIVES & CUSTOMER SUPPORT
Call on us to help with quoting, product performance data, pricing, project
coordination, samples and mockups. All it takes is a phone call.
techelpNeed an answer—fast? Our Architectural Technical Services group, along with
our Architectural Design group, can assist you with specification and design
assistance, performance and environmental analyses, structural calculations,
energy payback, hurricane requirements and security threat levels. No problem.
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Viracon insulating glass
TERMS AND DEFINITIONS
Solar Spectrum
The solar spectrum, commonly referred to as sunlight, consists of ultraviolet
light (UV), visible light and infrared (IR). The energy distribution within the
solar spectrum is approximately 2 percent UV, 47 percent visible light and 51
percent IR (see Figure 1). One aspect of the solar spectrum is its wavelength
in which nanometer (nm) is the unit of length [1 nm = 10-9 m].
UV is invisible to the human eye and has a wavelength range of ~300 - 380
nm. The damaging effects on long-term UV exposure results in fabric fading
and plastic deterioration.
Visible light is the only portion of the solar spectrum visible to the human
eye. It has a wavelength band of ~380 - 780 nm.
IR is invisible to the human eye, has a wavelength range of ~790 - 3000 nm
and has a penetrating heat effect. Short-wave IR converts to heat when it is
absorbed by an object.
Heat Transfer Methods
Heat transfers from one place to another via convection, conduction or
radiation. Convection occurs from the upward movement of warm, light air
currents. Conduction occurs when energy passes from one object to another.
Radiation occurs when heat is sent through space and is capable of traveling
to a distant object where it can be reflected, absorbed or transmitted
(see Figure 2).
Solar Energy
When solar energy meets glass, portions of it are reflected, absorbed or
transmitted – giving you the RAT equation (see Figure 3).
RAT Equation
The RAT equation accounts for 100 percent of solar energy, which is equal to
the sum of solar reflectance, absorption and transmittance. For example, with
a single pane of 1/8" (3 mm) clear glass, 83 percent of solar energy is trans-
mitted, 8 percent is reflected and 9 percent is absorbed by the glass. Of the
solar energy absorbed, portions are emitted back towards the exterior and
towards the building interior (see Figure 4).
Solar Control
The visible light and IR portions of solar energy are an essential part of
sunlight, since they represent nearly 100 percent of the solar spectrum.
As a result, each plays an important role when glass is selected as a glazing
material for commercial building applications. To enhance thermal
performance, thin metallic films are applied to one or more glass surfaces.
Solar Reflective Coatings
Solar reflective coatings reduce solar heat gain through higher reflection and
absorption with the glass appearing mirror like. Typically, the coating reflects
and absorbs high amounts of visible and IR portions of the solar spectrum.
As a result, heat gain is dramatically reduced, but the trade off is lower light
transmission through the glass.
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SolarRadiation
Thermal Radiation
Convection &Conduction
T 83%
3%6%
R 8%
1/8" (3 mm) Clear Glass
100%A 9%
T
eR =A =T =e =
R
A
Reflection Absorption Transmission emission
Ultraviolet
2%
51%
InfraredVisible
47%
Figure 1
Figure 2
Figure 3
Figure 4
Solar Spectrum
Thermal Heat Transfer
RAT Equation
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Low-Emissivity Coatings (Low-E)
Low-Emissivity coatings, which are applied to glass, reflect invisible long-wave
infrared or heat. They reduce heat gain or loss in a building by redirecting the
heat. In addition, they provide greater light transmission, low reflection and
reduce heat transfer.
Condensation Formation
Condensation forms on glass when the glass temperature falls below the
dewpoint of the air. To prevent condensation from forming, the glass
temperature needs to be higher than the dewpoint of ambient air. That’s why
it is critical to choose a glass product that addresses these concerns, such as
insulating glass.
For instance, insulating glass units decrease the potential for condensation
formation on roomside glass surfaces by “insulating” the inboard glass ply
from conductive/convective heat loss to the outside.
This “insulation,” using an air space between the two glass plies, results in
a more stabilized interior glass temperature. Unfortunately, insulating glass
alone may not totally eliminate condensation formation in extreme climates.
To lessen this risk, a Low-E coating can be applied to the insulating unit.
Insulating Glass
Inherently, insulating glass increases a window’s thermal performance. It is
constructed with two or more glass plies, separated by a desiccant-filled
spacer and sealed with an organic sealant. The desiccant absorbs the insu-
lating glass units internal moisture. The sealant may be the standard black
silicone and PIB or you may choose a gray silicone/ PIB sealant (see Figure 5).
Viracon uses mill finish and black painted spacers. We also offer a stainless
steel spacer for warm edge performance.
Viracon’s insulating glass products offer a wide range of performance levels,
as well as aesthetic options.
VIRACON GLASS
Viracon High-Performance Reflective Insulating Glass
This type of glass combines the thermal advantages of insulating glass with
the superior solar control characteristics of reflective coatings.
Viracon Low-E Insulating Glass
When applied to a variety of glass substrates, Viracon’s Low-E coatings offer
a balance between light transmission and solar energy control.
Each coating offers high visible light transmittance, low exterior reflectance
and the lowest U-values available; thereby, reducing radiant heat transfer
(see Figure 6).
By combining tinted glass with silk-screened patterns and Low-E coatings,
the building design professional can achieve unique, custom glass designs.
Viracon VRE (Radiant Low-E)
Viracon’s VRE high-performance coatings allow designers to balance aesthetics,
along with the economical necessity of reducing solar heat gain and the
psychological need for natural light. The product, available in 5 levels of light
transmittance, provides a crisp neutral exterior appearance and soothing
tones to the interior, allowing two-way vision through the glazing under
varying lighting conditions. In addition, VRE coatings offer an efficient blend
of u-values as low as any coatings along with reduced solar heat gain not
previously available with Low-E products.
Viracon VNE (Neutral Low-E)
Viracon’s VNE high-performance glass is the latest revolution in solar control
glass coatings to offer you an innovative alternative for your glass selection.
VNE blends the low reflectivity of traditional Low-E (VE) coatings with the
improved solar control characteristics of the Radiant Low-E (VRE) coatings.
The result is a new glazing option with low solar heat gain, low reflectance
and an ultra-subtle neutral reflected color architects have been asking for.
The real beauty of VNE is that it provides an appealing visual balance without
dominating the building façade.
Commercial Applications
Many commercial building designs feature large ratios of glass-to-wall areas,
which translate into a greater potential for increased heat gain. What’s more,
secondary sources, such as people, office machines and artificial lighting
generate heat within a building. Consequently, the emphasis is on reducing
heat gain into the building interior.
Low-E coatings on tinted glass play an important role in thermal performance
by possessing high visible light transmission and low heat transfer properties.
What’s more, Low-E coatings on tinted glass reduce glare.
When short-wave solar energy (IR) strikes the tinted exterior glass ply it is
absorbed and converted into long-wave infrared or heat. By applying a Low-E
coating to the second (#2) surface, the heat is reradiated back outdoors,
reducing the heat gain potential into the building interior (see Figure 7).
Exterior PlySight Line 1/2"
± 1/8"
Desiccant
#3 Surface
Interior Ply
#1 Surface
Primary Seal PolyisobutyleneSecondary Seal
#2 Surface
#4 Surface
5
300
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500
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700
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Visible Infrared
VE 1-85
Visible (Light)
VE 1-2M (Solarscreen 2000)
VE 1-2M VE 1-85 VE 1-55 VE 1-52 VE 1-42 VE 1-40
W A V E L E N G T H (nanometer)
TR
AN
SM
ITTA
NC
E(%
)
Infraredt(Heat)
Visible Light
(Short Wave) IR (Long Wave)
IR Radiation
Solar Energy
Low-Emissivity Coating
Exterior Glass TintedInterior Glass
ClearCoating #2 Surface
Figure 7
Commercial Application
Insulating Glass Unit
Figure 5
Figure 6
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Vision/Spandrel Match
Often a project may require spandrel glass to harmonize with the vision
areas of your building. However, this is sometimes difficult to achieve when
high-light transmitting or low-reflective glass types are used. Instead, the
use of low-light transmitting and high-reflective glass types provide the
least contrast between vision and spandrel areas under a variety of lighting
conditions.
In addition, variable sky conditions can also influence our perception of
glass color and general appearance. On a bright, sunny day, the exterior
light intensity is approximately 50 to 100 times greater than the interior
lighting level. When viewing the glass from the outside, the dominant
visual characteristic is the exterior reflection. On gray, overcast days,
a greater visual disparity is created between vision and spandrel areas.
This is due to the transparency of the vision glass and the perception of
depth created by interior lighting. The non-vision areas tend to look flat
and two-dimensional by contrast.
Because spandrel glass is virtually opaque, it can only be viewed in reflec-
tion. On the other hand, vision glass possesses a degree of transmission.
As the transmission of the vision glass increases during overcast conditions,
interior lighting becomes more prevalent. Viracon recommends viewing
glass samples or full-size mockups to match vision and spandrel glass areas
when the vision glass light transmission exceeds 14 percent.
Greater contrast between vision and spandrel areas occurs when using
uncoated, tinted glass (green, bronze, blue, etc.) or high transmission
Low-E coatings. Under these conditions, insulating spandrel units can
create the illusion of depth and approximate the vision glass more closely.
By keeping the vision and spandrel glass construction similar (the same
exterior glass color, coating, etc.), the contrast can be minimized under
various lighting conditions. Viracon recommends a neutral colored ceramic
frit on the number four (#4) surface.
ENERGY TERMS
Visible Light Transmittance
The percentage of visible light (380 - 780 nm) that is transmitted through
the glass.
Solar Transmittance
The percentage of ultraviolet, visible and near infrared energy (300 - 3000
nm) that is transmitted through the glass.
Visible Light Reflectance
The percentage of light that is reflected from the glass surface(s).
Solar Reflectance
The percentage of solar energy that is reflected from the glass surface(s).
NFRC U-Value
A measure of heat gain or heat loss through glass due to the differences
between indoor and outdoor temperatures. These are center pane values
based on NFRC standard winter nighttime and summer daytime conditions.
U-values are given in BTU/(hr*ft2*°F) for the English system. Metric
U-values are given in W/(m2*°K)*.
*Note: To convert from English to metric, multiply the English U-value
by 5.6783.
NFRC winter nighttime U-values are based on an outdoor temperature of
0°F (-17.8°C), an indoor temperature of 70°F (21°C) and a 12.3 mph (19.8
km/h) outdoor air velocity.
NFRC summer daytime U-values are based on an outdoor temperature of 89°F
(32°C), an indoor temperature of 75°F (24°C), a 6.2 mph (10.1 km/h) outdoor
air velocity and a solar intensity of 248 BTU/(hr*ft2*°F) (782 W/m2).
R-Value
Thermal resistance is expressed in ft2*hr*°F/BTU). It is the reciprocal of
U-value. The higher the R-value, the less heat is transmitted through the
glazing material.
Shading Coefficient
Shading coefficient is the ratio of solar heat gain through a specific type of glass
that is relative to the solar heat gain through a 1/8" (3 mm) ply of clear glass
under identical conditions (see Figure 8). As the shading coefficient number
decreases, heat gain is reduced, which means a better performing product.
Relative Heat Gain (RHG)
The amount of heat gained through glass taking into consideration U-value
and shading coefficient. Using the NFRC standard, relative heat gain is
calculated as follows:
English System:
RHG = Summer U-value x 14°F + shading coefficient x 200.
Metric System:
RHG = Summer U-value x 7.8°C + shading coefficient x 630.
Solar Heat Gain Coefficient (SHGC)
The portion of directly transmitted and absorbed solar energy that enters into
the building’s interior. The higher the SHGC, the higher the heat gain.
Light to Solar Gain Ratio (LSG)
The ratio is equal to the Visible Light Transmittance divided by the Solar Heat
Gain Coefficient. The Department of Energy’s Federal Technology Alert publica-
tion of the Federal Energy Management Program (FEMP) views an LSG of 1.25
or greater to be Green Glazing/Spectrally Selective Glazing.
European U-Value (formerly K-Value)
Based on ISO-DP10292 draft standard conditions. It is based on an outdoor
temperature of 5.5°C, an indoor temperature of 20.5°C and a 4.8 m/s outdoor
air velocity.
The solar and optical data presented in this guide is center-of-glass data based on the NationalFenestration Rating Council measurement standards. They were calculated using Lawrence BerkeleyNational Laboratory’s (LBNL) WINDOW 5.2 software. In some cases performance data changed incomparison to previous versions of LBNL’s WINDOW program.
A
BSHG of X
SHG of 1/8" CLSC =
Solar Heat Gain (SHG)
SHG = A + B
Figure 8
Shading Coefficient (SC)
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UNCOATED INSULATING GLASS (TABLE 1)
Product Transmittance Reflectance U-ValueShading
CoefficientRelative
Heat Gain SHGC*Visible Solar U-V Vis-Out Vis-In Solar Winter Summer
LSG*EuropeanU-Value
Clear 79% 61% 46% 14% 14% 11% .47 .49 .81 169 .70 1.13 2.8
Green 68% 39% 24% 11% 13% 7% .47 .49 .57 121 .49 1.39 2.8
Gray 41% 35% 19% 7% 12% 7% .47 .49 .55 117 .48 .85 2.8
Bronze 47% 38% 19% 8% 12% 7% .47 .49 .58 123 .50 .94 2.8
Blue 50% 37% 26% 8% 13% 7% .47 .49 .57 120 .49 1.02 2.8
Blue-Green 67% 40% 26% 12% 14% 8% .47 .49 .59 124 .51 1.31 2.8
UltraWhite™ 82% 76% 55% 14% 14% 13% .47 .49 .92 191 .80 1.02 2.8
CrystalGray™ 58% 43% 27% 10% 13% 8% .47 .49 .63 132 .54 1.07 2.8
PRODUCT CODES
*Detailed performance data is provided on the following pages for these substrates.
To view Viracon's complete product offering, including an expansion of high performance coatings and glass substrates, visit www.viracon.com.
VNE= Neutral Low-E 1 = Clear*
VRE = Radiant Low-E 2 = Green*
VE = Low-E 3 = Gray*
VS = Stainless Steel 4 = Bronze*
5 = Blue*
6 = Blue-Green*
7 = Azuria™
8 = EverGreen™
08 = 8%
14 = 14%
20 = 20%
30 = 30%
37 = 37%
38 = 38%
40 = 40%
42 = 42%
46 = 46%
52 = 52%
54 = 54%
55 = 55%
59 = 59%
63 = 63%
67 = 67%
85 = 85%
2M = 70%
*SHGC refers to Solar Heat Gain Coefficient
*LSG refers to Light to Solar Gain ratio
1. The performance data for Table 1 applies to insulating glass constructed with two plies (clear inboard) of 1/4" (6 mm) glass and a 1/2" (13 mm) air space. If UltraWhite™ (15) glass is used,both plies of the unit are the UltraWhite™ substrate.
Coating Type Outboard Glass Substrate Nominal Visible Light Transmittance of Coating
7
9 = Versalux® Blue 2000
10 = Versalux® Green 2000
11 = Arctic Blue™
12 = Atlantica™
13 = Starphire™
14 = Caribia™
15 = Guardian UltraWhite™*
19 = Guardian CrystalGray™*
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1. The performance data in Table 2 applies to insulating glass constructed with two plies (clear inboard) of 1/4" (6 mm) glass and a 1/2" (13 mm) air space. The VNE coating is applied to the second(#2) surface. If UltraWhite™ (15) glass is used, both plies of the unit are the UltraWhite™ substrate.
2. If Viracon’s VNE coatings are applied to tinted glass, the glass must be heat treated.
3. If Viracon’s VNE coatings are applied to clear glass, contact our Technical Services Department at 800-533-2080 to determine the possibility of using annealed glass.
VIRACON VNE (NEUTRAL LOW-E) INSULATING GLASS (TABLE 2)
Product Transmittance Reflectance U-ValueShading
CoefficientRelative
Heat Gain SHGCVisible Solar U-V Vis-Out Vis-In Solar Winter Summer
LSGEuropeanU-Value
VNE1-37 37% 19% 13% 13% 10% 27% .30 .27 .28 61 .25 1.48 1.6
VNE1-63 62% 23% 4% 10% 11% 36% .29 .25 .32 67 .28 2.21 1.5
VNE2-37 31% 13% 6% 11% 10% 10% .30 .27 .24 51 .21 1.48 1.6
VNE2-63 52% 18% 2% 9% 11% 11% .29 .25 .29 61 .25 2.08 1.5
VNE3-37 19% 10% 6% 6% 9% 12% .30 .27 .20 44 .17 1.12 1.6
VNE3-63 31% 12% 2% 6% 10% 15% .29 .25 .21 47 .19 1.63 1.5
VNE4-37 22% 11% 5% 8% 9% 14% .30 .27 .22 47 .19 1.16 1.6
VNE4-63 37% 14% 2% 6% 10% 18% .29 .25 .23 50 .20 1.85 1.5
VNE5-37 23% 12% 7% 8% 9% 11% .30 .27 .22 48 .19 1.21 1.6
VNE5-63 39% 15% 2% 7% 10% 13% .29 .25 .25 53 .21 1.86 1.5
VNE6-37 32% 14% 7% 11% 10% 12% .30 .27 .25 53 .21 1.52 1.6
VNE6-63 53% 19% 3% 9% 11% 13% .29 .25 .29 62 .25 2.12 1.5
VNE15-37 39% 21% 15% 14% 9% 36% .30 .27 .29 63 .26 1.50 1.6
VNE15-63 65% 25% 5% 11% 11% 50% .29 .25 .32 67 .28 2.32 1.5
VNE19-37 27% 13% 8% 9% 9% 15% .30 .27 .24 51 .21 1.29 1.6
VNE19-63 46% 17% 3% 8% 11% 19% .29 .25 .27 57 .23 2.00 1.5
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VIRACON VRE (RADIANT LOW-E) INSULATING GLASS (TABLE 3)
VRE1-38 36% 18% 12% 44% 21% 46% .30 .26 .27 57 .23 1.56 1.6
VRE1-46 43% 23% 16% 34% 15% 40% .30 .27 .33 69 .28 1.54 1.6
VRE1-54 47% 25% 16% 32% 16% 37% .30 .27 .35 74 .31 1.52 1.6
VRE1-59 53% 28% 17% 30% 19% 38% .30 .27 .39 81 .33 1.61 1.6
VRE1-67 59% 32% 20% 29% 25% 35% .30 .27 .43 90 .38 1.55 1.6
VRE2-38 30% 13% 6% 32% 21% 19% .30 .26 .22 48 .19 1.58 1.6
VRE2-46 36% 16% 7% 25% 15% 16% .30 .27 .26 56 .23 1.56 1.6
VRE2-54 40% 17% 8% 24% 16% 15% .30 .27 .28 60 .24 1.67 1.6
VRE2-59 44% 19% 8% 23% 19% 15% .30 .27 .30 64 .26 1.69 1.6
VRE2-67 50% 21% 9% 22% 24% 15% .30 .27 .33 69 .28 1.79 1.6
VRE3-38 18% 10% 5% 14% 21% 17% .30 .26 .20 43 .17 1.06 1.6
VRE3-46 22% 12% 7% 12% 14% 15% .30 .27 .23 49 .20 1.10 1.6
VRE3-54 24% 14% 7% 11% 15% 15% .30 .27 .24 53 .21 1.14 1.6
VRE3-59 26% 15% 7% 11% 18% 15% .30 .27 .26 55 .22 1.18 1.6
VRE3-67 30% 17% 8% 10% 24% 14% .30 .27 .28 60 .24 1.25 1.6
VRE4-38 22% 11% 5% 19% 21% 22% .30 .26 .21 45 .18 1.22 1.6
VRE4-46 26% 14% 7% 15% 14% 19% .30 .27 .25 53 .21 1.24 1.6
VRE4-54 29% 16% 7% 14% 15% 18% .30 .27 .26 57 .23 1.26 1.6
VRE4-59 32% 17% 7% 14% 19% 18% .30 .27 .28 60 .24 1.33 1.6
VRE4-67 36% 20% 8% 13% 24% 17% .30 .27 .31 66 .27 1.33 1.6
VRE5-38 23% 11% 7% 20% 21% 18% .30 .26 .21 46 .18 1.28 1.6
VRE5-46 27% 14% 9% 16% 14% 16% .30 .27 .25 53 .21 1.29 1.6
VRE5-54 30% 16% 10% 15% 15% 15% .30 .27 .26 56 .23 1.30 1.6
VRE5-59 33% 17% 10% 15% 19% 15% .30 .27 .28 60 .24 1.37 1.6
VRE5-67 37% 19% 11% 14% 24% 15% .30 .27 .30 65 .26 1.42 1.6
VRE6-38 31% 14% 7% 33% 21% 22% .30 .26 .23 50 .20 1.55 1.6
VRE6-46 37% 17% 9% 26% 15% 18% .30 .27 .27 58 .23 1.61 1.6
VRE6-54 41% 19% 10% 24% 16% 18% .30 .27 .29 62 .25 1.64 1.6
VRE6-59 45% 20% 10% 23% 19% 17% .30 .27 .31 66 .27 1.67 1.6
VRE6-67 51% 23% 11% 23% 24% 17% .30 .27 .34 72 .30 1.70 1.6
VRE15-38 38% 22% 14% 46% 22% 59% .30 .26 .28 59 .24 1.58 1.6
VRE15-46 45% 27% 18% 35% 15% 51% .30 .27 .35 73 .30 1.50 1.6
VRE15-54 49% 29% 19% 33% 16% 51% .30 .27 .37 78 .32 1.53 1.6
VRE15-59 55% 33% 20% 31% 19% 49% .30 .27 .41 86 .36 1.53 1.6
VRE15-67 62% 38% 23% 30% 25% 45% .30 .27 .46 97 .40 1.55 1.6
VRE19-38 26% 13% 7% 26% 21% 25% .30 .26 .23 49 .20 1.30 1.6
VRE19-46 31% 17% 10% 20% 15% 22% .30 .27 .27 58 .23 1.35 1.6
VRE19-54 34% 18% 10% 19% 16% 20% .30 .27 .29 61 .25 1.36 1.6
VRE19-59 38% 20% 11% 18% 19% 21% .30 .27 .31 66 .27 1.41 1.6
VRE19-67 43% 23% 12% 18% 24% 19% .30 .27 .34 72 .30 1.43 1.6
Product Transmittance Reflectance U-ValueShading
CoefficientRelative
Heat Gain SHGCVisible Solar U-V Vis-Out Vis-In Solar Winter Summer
LSGEuropeanU-Value
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1. The performance data in Table 3 applies to insulating glass constructed with two plies (clear inboard) of 1/4" (6 mm) glass and a 1/2" (13 mm) air space. The VRE coatings are applied to the second(#2) surface. If UltraWhite™ (15) glass is used, both plies of the unit are the UltraWhite™ substrate.
2. If Viracon’s VRE coatings are applied to tinted glass, the glass must be heat treated.
3. If Viracon’s VRE coatings are applied to clear glass, contact our Technical Services Department at 800-533-2080 to determine the possibilityof using annealed glass.
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VIRACON VE (LOW-E) INSULATING GLASS (TABLE 4)
VE1-2M 70% 32% 10% 11% 12% 31% .29 .26 .44 91 .38 1.84 1.5VE1-85 76% 46% 26% 12% 13% 21% .31 .29 .63 129 .54 1.41 1.6VE1-55 47% 27% 13% 11% 16% 21% .31 .29 .40 84 .35 1.34 1.6VE1-52 50% 32% 21% 16% 11% 20% .32 .29 .46 96 .40 1.25 1.7VE1-42 37% 24% 16% 19% 14% 21% .31 .29 .36 77 .31 1.19 1.6VE1-40 36% 21% 10% 15% 19% 25% .31 .29 .32 68 .28 1.29 1.6VE2-2M 60% 24% 5% 9% 11% 10% .29 .26 .36 75 .31 1.93 1.5VE2-85 65% 31% 13% 10% 12% 9% .31 .29 .45 93 .39 1.67 1.6VE2-55 40% 18% 6% 10% 16% 9% .31 .29 .30 64 .26 1.54 1.6VE2-52 43% 21% 10% 12% 11% 9% .32 .29 .34 72 .29 1.48 1.7VE2-42 31% 15% 8% 15% 14% 10% .31 .29 .27 58 .23 1.35 1.6VE2-40 32% 14% 5% 12% 19% 10% .31 .29 .26 55 .22 1.45 1.6VE3-2M 35% 17% 4% 6% 9% 12% .29 .26 .28 59 .24 1.46 1.5VE3-85 38% 25% 11% 6% 10% 10% .31 .29 .38 81 .33 1.15 1.6VE3-55 23% 14% 5% 6% 15% 10% .31 .29 .26 57 .23 1.00 1.6VE3-52 25% 17% 8% 7% 10% 9% .32 .29 .29 63 .25 1.00 1.7VE3-42 19% 13% 7% 8% 13% 10% .31 .29 .25 53 .21 .90 1.6VE3-40 18% 11% 4% 7% 19% 11% .31 .29 .22 49 .19 .95 1.6VE4-2M 41% 20% 5% 7% 10% 15% .29 .26 .31 65 .26 1.58 1.5VE4-85 44% 28% 11% 7% 10% 11% .31 .29 .43 89 .37 1.19 1.6VE4-55 27% 17% 6% 7% 15% 12% .31 .29 .29 62 .25 1.08 1.6VE4-52 29% 19% 9% 8% 10% 10% .32 .29 .33 69 .28 1.04 1.7VE4-42 22% 15% 7% 10% 14% 11% .31 .29 .27 57 .23 .96 1.6VE4-40 22% 13% 4% 8% 19% 13% .31 .29 .24 52 .21 1.05 1.6VE5-2M 45% 21% 6% 7% 10% 12% .29 .26 .32 67 .28 1.61 1.5VE5-85 48% 28% 15% 8% 11% 9% .31 .29 .42 87 .36 1.33 1.6VE5-55 29% 16% 8% 7% 15% 9% .31 .29 .29 61 .25 1.16 1.6VE5-52 32% 19% 12% 9% 10% 10% .32 .29 .32 68 .28 1.14 1.7VE5-42 23% 14% 9% 10% 14% 10% .31 .29 .26 56 .23 1.00 1.6VE5-40 23% 12% 6% 9% 19% 10% .31 .29 .24 52 .20 1.15 1.6VE6-2M 60% 25% 6% 10% 11% 12% .29 .26 .36 76 .31 1.93 1.5VE6-85 65% 32% 15% 11% 12% 10% .31 .29 .46 97 .40 1.62 1.6VE6-55 40% 19% 7% 9% 15% 10% .31 .29 .32 67 .27 1.48 1.6VE6-52 42% 22% 12% 13% 11% 11% .32 .29 .35 73 .30 1.40 1.7VE6-42 32% 17% 9% 15% 14% 11% .31 .29 .29 61 .25 1.28 1.6VE6-40 31% 15% 6% 13% 19% 12% .31 .29 .26 56 .23 1.35 1.6VE15-2M 73% 37% 11% 11% 12% 42% .29 .26 .45 95 .39 1.87 1.5VE15-85 79% 56% 31% 12% 13% 27% .31 .29 .69 142 .60 1.32 1.6VE15-55 49% 33% 25% 12% 16% 28% .31 .29 .44 91 .38 1.29 1.6VE15-52 52% 39% 25% 16% 11% 25% .32 .29 .50 105 .44 1.18 1.7VE15-42 39% 29% 18% 20% 14% 26% .32 .30 .40 83 .34 1.15 1.6VE15-40 38% 25% 12% 16% 19% 33% .31 .29 .34 72 .29 1.31 1.6VE19-2M 51% 24% 6% 8% 11% 16% .29 .26 .35 73 .30 1.70 1.5VE19-85 55% 33% 16% 9% 12% 12% .31 .29 .48 99 .41 1.34 1.6VE19-55 34% 20% 8% 8% 16% 12% .31 .29 .32 68 .28 1.21 1.6VE19-52 36% 23% 13% 10% 11% 12% .32 .29 .36 76 .31 1.16 1.7VE19-42 27% 17% 10% 12% 14% 13% .32 .30 .29 53 .25 1.08 1.6VE19-40 27% 15% 6% 10% 19% 14% .31 .29 .26 56 .23 1.17 1.6
Product Transmittance Reflectance U-ValueShading
CoefficientRelative
Heat Gain SHGCVisible Solar U-V Vis-Out Vis-In Solar Winter Summer
LSGEuropeanU-Value
10
1. The performance data in Table 4 applies to insulating glass constructed with two plies (clear inboard) of 1/4" (6 mm) glass and a 1/2" (13 mm) air space. The VE coatings are applied to the second(#2) surface. If UltraWhite™ (15) glass is used, both plies of the unit are the UltraWhite™ substrate.
2. If Viracon’s VE-85 coatings are applied to tinted glass, contact our Technical Services Department at 800-533-2080 to determine the possibility of using annealed glass.
3. If Viracon’s VE-55, VE-52, VE-42 and VE-40 coatings are applied to clear glass, contact our Technical Services Department at 800-533-2080 to determinethe possibility of using annealed glass.
4. If VE-2M, VE-55, VE-52, VE-42, VE-40 coatings are applied to tinted glass, the glass must be heat treated.
5. Our Technical Services Department can also provide performance information on products not listed here.
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11
VS1-08 8% 5% 3% 42% 38% 34% .38 .39 .16 37 .13 .61 2.2
VS1-14 12% 9% 6% 32% 38% 27% .40 .41 .21 47 .18 .67 2.3
VS1-20 18% 12% 8% 24% 34% 21% .42 .43 .27 59 .23 .78 2.4
VS1-30 26% 18% 12% 15% 30% 14% .44 .45 .35 76 .30 .87 2.6
VS1-40 36% 26% 17% 11% 25% 10% .45 .47 .44 94 .38 .95 2.7
VS2-08 6% 3% 1% 31% 38% 16% .38 .39 .16 37 .13 .46 2.2
VS2-14 10% 5% 3% 25% 38% 14% .40 .41 .19 44 .16 .62 2.3
VS2-20 15% 8% 4% 18% 34% 11% .42 .43 .23 52 .20 .75 2.4
VS2-30 22% 11% 6% 12% 30% 8% .44 .45 .28 62 .24 .92 2.6
VS2-40 30% 16% 8% 9% 25% 6% .45 .47 .33 73 .29 1.03 2.7
VS3-08 4% 3% 1% 14% 38% 15% .38 .39 .16 37 .14 .29 2.2
VS3-14 6% 5% 3% 12% 38% 13% .40 .41 .19 44 .16 .37 2.3
VS3-20 9% 7% 4% 10% 33% 11% .42 .43 .23 52 .20 .45 2.4
VS3-30 13% 10% 5% 7% 29% 7% .44 .45 .27 61 .23 .56 2.6
VS3-40 18% 14% 7% 6% 25% 6% .45 .47 .32 71 .27 .67 2.7
VS4-08 4% 3% 1% 17% 38% 16% .38 .39 .16 38 .14 .29 2.2
VS4-14 7% 5% 2% 14% 38% 13% .40 .41 .19 45 .17 .41 2.3
VS4-20 11% 8% 3% 11% 33% 11% .42 .43 .23 52 .20 .55 2.4
VS4-30 16% 12% 5% 8% 30% 8% .44 .45 .29 64 .25 .64 2.6
VS4-40 21% 16% 7% 6% 25% 6% .45 .47 .34 75 .29 .72 2.7
VS5-08 5% 3% 2% 19% 38% 14% .38 .39 .16 37 .14 .36 2.2
VS5-14 8% 5% 3% 15% 38% 12% .40 .41 .19 44 .16 .50 2.3
VS5-20 11% 7% 4% 12% 33% 10% .42 .43 .23 51 .19 .58 2.4
VS5-30 16% 11% 7% 9% 30% 8% .44 .45 .28 62 .24 .67 2.6
VS5-40 22% 15% 9% 7% 25% 6% .45 .47 .33 72 .28 .79 2.7
VS6-08 6% 3% 2% 31% 38% 18% .38 .39 .16 37 .14 .43 2.2
VS6-14 10% 6% 3% 25% 38% 15% .40 .41 .19 45 .17 .59 2.3
VS6-20 15% 8% 4% 19% 34% 12% .42 .43 .23 53 .20 .75 2.4
VS6-30 23% 13% 7% 12% 29% 8% .44 .45 .30 66 .26 .88 2.6
VS6-40 30% 17% 9% 9% 25% 7% .45 .47 .35 76 .30 1.00 2.7
VS15-08 8% 7% 2% 43% 39% 43% .38 .39 .15 36 .13 .61 2.2
VS15-14 13% 11% 4% 34% 39% 34% .40 .41 .22 49 .19 .68 2.3
VS15-20 19% 16% 6% 25% 34% 27% .42 .43 .28 62 .24 .79 2.4
VS15-30 27% 24% 9% 16% 30% 17% .44 .45 .39 83 .33 .82 2.6
VS15-40 37% 34% 12% 11% 26% 11% .45 .47 .49 105 .43 .86 2.7
VS19-08 6% 2% 4% 24% 38% 19% .38 .39 .16 37 .14 .43 2.2
VS19-14 9% 6% 3% 19% 38% 15% .40 .41 .20 45 .17 .53 2.3
VS19-20 13% 9% 5% 15% 33% 12% .42 .43 .24 54 .21 .62 2.4
VS19-30 19% 13% 7% 10% 30% 9% .44 .45 .30 66 .26 .73 2.6
VS19-40 26% 18% 10% 7% 25% 7% .45 .47 .36 71 .31 .84 2.7
Product Transmittance Reflectance U-ValueShading
CoefficientRelative
Heat Gain SHGCVisible Solar U-V Vis-Out Vis-In Solar Winter Summer
LSGEuropeanU-Value
VIRACON VS (STAINLESS STEEL) REFLECTIVE INSULATING GLASS (TABLE 5)
1. The performance data in Table 5 applies to insulating glass constructed with two plies (clear inboard) of 1/4" (6 mm) glass and a 1/2" (13 mm) air space. The VS coatings are applied to the second(#2) surface. If UltraWhite™ (15) glass is used, both plies of the unit are the UltraWhite™ substrate.
2. If Viracon’s reflective coatings are applied to tinted glass, the glass must be heat treated.
3. If Viracon’s reflective coatings are applied to clear glass, contact our Technical Services Department at 800-533-2080 to determine the possibilityof using annealed glass.
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12
technical information
Glazing Guidelines
Viracon requires that only 100% silicone setting blocks be used for all types of
glazing systems. The blocks should have a durameter hardness of 85±5. They
should also be centered at quarter points and be 1/16" (1.6 mm) less than the
channel width (see Figure 9).
Lockstrip gasket systems also require setting blocks. For additional
recommendations, contact the appropriate gasket manufacturer.
Inadequate edge clearances can cause glass breakage as a result of glass-
to-frame contact. Viracon recommends a minimum face clearance of 3/16"
(5 mm), a minimum edge clearance of 1/4"(6 mm) and a minimum glass bite
of 1/2" (13 mm) (see Figure 10).
Weep System
Do not expose the edges of laminated, insulating and opacifier film glass to
standing water. This can cause premature seal failure or delamination. Viracon
requires either impervious weather seals or an adequate weep system to
prevent this from occurring (see Figure 11). This is also true of lockstrip
gasket glazing.
The glazing system manufacturer or designer is ultimately responsible for the
design of the weep system and its proper performance.
Structural Silicone Glazing
Structural silicone glazing systems use silicone sealants with an interior
backup mullion. It must be specified as a structural silicone glazing system
due to compatibility limitations of silicone sealants with certain types of glass
or insulating unit secondary seals. To obtain approval for any structural
silicone glazing system, contact the appropriate silicone manufacturer or
Viracon’s Technical Services Department.
Gray Silicone/PIB (Polyisobutylene)
Viracon offers Gray silicone/PIB in addition to standard Black silicone/PIB
sealant. Both colors of sealant are the same Dow Corning 982 structural
silicone used by Viracon for the past 20 years. Therefore, the structural
performance and long-term durability expected of the primary and secondary
seal of our insulating glass unit remains the same.
The Gray silicone/PIB dual seal construction has certain inherent visual
characteristics that are not readily apparent with a Black silicone/PIB dual seal
construction. These include the following:
• Gray color variation. Given the inherent variation in compounding both
silicone and PIB by suppliers, visual differences may occur.
• Color match between silicone and PIB. While every effort is made to
match these visually, the compounding variation mentioned above
precludes a perfect match. Additionally, a slight contrast in color is
required in order to identify any sealant inconsistencies.
• Black specks within the silicone and PIB. These are due to the existence
of carbon black in the sealant manufacturing process.
• Dark lines or streaks in the silicone. These may occur as a result of
the edge deletion process used to remove certain coatings around the
perimeter glass edge. With black silicone/PIB these are not visible;
however, with the light gray color they may be visible when viewed
from close distances.
None of these inherent product characteristics would be considered cause
for rejection.
Glass Handling and Storage
Care needs to be taken during handling and glazing to ensure that glass
damage does not occur. Do not allow glass edges to contact the frame or any
hard surface during installation. Use rolling blocks if the insulating units are
W/4 W/4
85 ± 5 Shore A Durometer Blockscentered at 1/4 points with length
dependent upon glass area.Weep System
(3/8" DiameterHoles)
Bite
Edge
Face
DenseWedgeGasket
Closed-Cell NeopreneGasket
Weep
Typical Glazing Detail
Clearance, Bite andDimensional Tolerances
Setting Block LocationWeep Hole Location
Figure 9
Figure 10
Figure 11
The “W” indicates width of glass ply unit
281155 InsulGlass.qxd:Insulating 12pg.qxd 2/25/08 12:22 PM Page 13
PRODUCT STANDARDS
13
RECOMMENDED CLEARANCES
Edge Clearance
1/4"(6 mm)
Face Clearance
3/16"(5 mm)
Glass Bite
1/2"(13 mm)
Dimensional Tolerance
+3/16"/ -1/16"(+4.8 mm / -1.6mm)
Thickness Tolerance
+1/32"/ -1/16"(+.8 mm / -1.6mm)
Glass Thickness
1" (25 mm) unitwith 1/4"(6 mm) glass
rotated or “cartwheeled” on their corners. To see an example of a rolling
block, refer to the Glass Association of North America (GANA) glazing manual.
Improper glass storage techniques may result in damage to glass components,
glass surfaces, coatings or glass breakage. Store glass crates properly to pre-
vent them from tipping. Also, ensure proper blocking and protection from
outside elements.
Viracon recommends a 5-7° lean against two wide, sturdy uprights, which are
capable of withstanding crate weight.
Once the glass is installed, the architect, general contractor or building owner
should provide for glass protection and cleaning. Weathering metals, alkaline
materials or abrasive cleaners may cause surface damage. Windblown objects,
welding sparks or other material that contacts the glass surface during
construction may cause irreversible damage.
Maintenance and Cleaning
To maintain aesthetics, it is important to clean the glass during and after
construction. For routine cleaning, use a soft, clean, grit-free cloth and a mild
soap, detergent, or window cleaning solution.
Rinse immediately with clean water and remove any excess water from the
glass surface with a squeegee. Do not allow any metal or hard parts of the
cleaning equipment to contact the glass surface.
Take special care cleaning coated reflective glass surfaces. Do not use abrasive
cleaners, razor blades, putty knives and metal parts of cleaning equipment,
since these will scratch the reflective coating. Fingerprints, grease, smears,
dirt, scum and sealant residue are more noticeable on reflective glass,
requiring more frequent cleaning. Follow the same cleaning techniques
used for non-reflective glass.
Glass Breakage
It is important to first determine appropriate loads for the glass. Viracon
can supply architects with glass strength analyses on specified products.
“Unexplained” glass breakage may still occur due to thermal stress, glazing
system pressures, glazing damage, handling and storage conditions, excessive
wind loads, objects and debris striking the glass, improper factory fabrication
or damage by persons or objects at the construction site.
Framing Deflections
Refer to the GANA glazing manual for information on adequate framing
systems. You are required to comply with industry standards for framing
deflection. It must not exceed either the length of the span divided by 175
or 3/4" (19 mm), whichever is less.
Non-Rectangular Glass Shapes
Viracon’s capabilities include cutting virtually any shape glass required for your
project without full-size patterns. However, if you require a full-size pattern, it
must be submitted to Viracon on mylar material. If not, Viracon will transfer
the pattern to mylar at an additional charge. However, Viracon will not be
responsible for size accuracy. For additional information, contact Viracon’s
Inside Sales Department.
Suggested Specifications
You can specify Viracon products, using the MASTERSPEC® Basic Section
“Glass and Glazing” or the MASTERSPEC Supplemental Section “Decorative
Glazing” software.
MASTERSPEC is a comprehensive and unbiased master specification system
produced and distributed by the American Institute of Architects (AIA) on a
licensed user basis. For further information, call 800-424-5080.
Warranty Information
Viracon’s architectural products carry limited warranties. Contact our Inside
Sales Department for copies of our product warranties.
PRODUCT STANDARDS
Uncoated Insulating Glass
Minimum Size Standard Maximum Size
Annealed:
8" x 18" 84" x 144"
(203 mm x 457 mm) (2134 mm x 3658 mm)
Heat processed:
12" x 12" 84" x 144"
(305 mm x 305 mm) (2134 mm x 3658 mm)
Premium over-sized maximum: 84" x 165" (2134 mm x 4191 mm) or 96" x 144"
(2438 mm x 3658 mm). Premium over-sized maximum for silk-screened glass
and for heat-soaked glass is 84" x 165" (2134 mm x 4191 mm). A technical
review is required for all over-sized requests.
1. Viracon’s architectural insulating glass units have been CBA rated with
the Insulating Glass Certification Council (IGCC) in accordance with
ASTM Specifications E-773 and E-774. ASTM E 2190 now supercedes
ASTM E-773 and E-774. In 2005 IGCC has begun certifying insulating
glass to ASTM E 2190. Viracon’s insulating glass will now be IGCC
certified to ASTM E 2190.
2. In some cases, Viracon’s insulating glass may require heat processing. Refer
to heat processing comments on page 14 for further product information.
Viracon High-Performance Reflective and Low-E Coated
Insulating Glass
Minimum Size Standard Maximum Size
Annealed:
8" x 18" 84" x 144"
(203 mm x 457 mm) (2134 mm x 3658 mm)
Heat processed:
12" x 36" 84" x 144"
(305 mm x 914 mm) (2134 mm x 3658 mm)
The maximum size for Viracon’s VNE63 coating is 72” x 144”. The maximum size
for the VNE37 coating is 84” x 144”.
Premium over-sized maximum: 84" x 165" (2134 mm x 4191 mm) or 96" x 144"
(2438 mm x 3658 mm). Premium over-sized maximum for silk-screened glass
and for heat-soaked glass is 84" x 165" (2134 mm x 4191 mm). A technical
review is required for all over-sized requests.
1. In some cases, insulating glass units may require heat processing. Refer
to heat processing comments on page 14 for further product information.
*Detailed performance data is provided on the following pages for these substrates.
To view Viracon’s complete product offering, including an expansion of high performance coatings and glass substrates, visit www.viracon.com
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14
2. Coated Glass Inspection Guidelines. Viracon’s coated glass products
comply with ASTM Standard C 1376.
• Pinholes— Inspect glass from a distance of 10 ft. (3 m) in transmission,
at a viewing angle of 90° to the specimen, against a bright uniform
background. If a pinhole is readily apparent, the following criteria apply:
Pinholes larger than 1/16" (1.6 mm) in diameter are not allowed in 80
percent of the central glass area. Pinholes larger than 3/32" (2.4 mm)
are not allowed in the outer 20 percent of the glass area. No more than
two readily apparent blemishes are allowed in a 3" (75 mm) diameter
circle and no more than five readily apparent blemishes are allowed in
a 12" (300 mm) diameter circle.
• Uniformity—When viewing coated glass from a minimum distance of
10 ft. (3 m), color variation may occur from one unit to another. This
can be caused by variations within the float glass substrate and normal
production variations, and this is not considered a defect. All Viracon
commercial glass products conform to industry color standards.
• Distortion—Various factors involved in heat processing, insulating air
spacers and frame binding may distort reflected objects viewed on the
glass surface. These are not considered defects of the coated glass or
the final fabricated product.
• Scratches—Inspect glass from a distance of 10 ft. (3 m). Scratches up to
2" (50 mm) are allowed in 80 percent central glass area, and scratches
up to 3" (75 mm) are allowed in the outer area. Concentrated scratches
or abraded areas are not allowed.
Viracon Insulating Spandrel Glass
Minimum Size Standard Maximum Size
12" x 36" 84" x 144"
(305 mm x 914 mm) (2134 mm x 3658 mm)
Premium over-sized maximum: 84" x 165" (2134 mm x 4191 mm). A technical
review is required for all over-sized requests.
1. Viracon designs its spandrel glass for glazing against a uniform, opaque
background. We do not recommend its use in transoms, partitions or
other areas where a uniform, opaque background is unavailable.
2. Reflective Spandrel Glass Inspection Guidelines
• View spandrel glass from a distance of 15 ft. (4.6 m) under natural
daylight conditions. Color and reflectance may vary when viewed under
a uniform, opaque background. This is not considered a defect.
• When viewing spandrel glass under similar conditions, reflected pinholes
and scratches are not considered defects if they are unobtrusive.
Viraspan™ for Uncoated Insulating Glass
Minimum Size Standard Maximum Size
12" x 12" 84" x 144"
(305 mm x 305 mm) (2134 mm x 3658 mm)
Premium over-sized maximum: 84" x 165" (2134 mm x 4191 mm). A technical
review is required for all over-sized requests.
1. Viracon designs its spandrel glass for glazing against a uniform, opaque
background. We do not recommend its use in transoms, partitions or
other areas where a uniform, opaque background is unavailable.
2. Viraspan Spandrel Glass Inspection Guidelines
• View spandrel glass from a distance of 15 ft. (4.6 m) under natural
daylight conditions. Color and reflectance may vary when viewed under
a uniform, opaque background. This is not considered a defect.
• When viewing spandrel glass under similar conditions, reflected pinholes
and scratches are not considered defects if they are unobtrusive.
3. You can use Viraspan in structurally glazed applications. However,
a clear edge may be visible. Contact Viracon’s Architectural Inside Sales
Department for more information.
4. Viracon reserves the right to change substrate glass suppliers. As a result,
this may affect perceived colors of our Viraspan samples. Approval of all
glass colors is based on 12" x 12" (305 mm x 305 mm) samples, which
are ordered for each project.
Heat-Processed Glass (Heat Strengthened and Tempered)
1. Glass cutting and fabrication is completed prior to heat processing.
2. Viracon’s two types of heat-processed glass comply with ASTM Standard
C1048. Surface compression of heat-strengthened glass with thicknesses
of 1/4" (6 mm) and less is 4,000-7,000 psi. Surface compression for 5/16"
(8 mm) and 3/8" (10 mm) heat-strengthened glass is 5,000-8,000 psi.*
For fully-tempered glass, the minimum surface compression is 10,000 psi.
It also complies with ANSI Z97.1 and CPSC 16 CFR 1201 safety glazing
standards.
*Because of reader repeatability and instrument tolerances, Viracon’s toler-
ance for heat-strengthened glass surface compression is +/- 1,000 psi.
Note: The maximum sizes listed are shown to illustrate pro-
duction limits. These sizes are unavailable as finished products.
Maximum piece size for annealed glass under any condition
is 50 sq. ft. (4.65 sq.m.) Maximum size for heat-treated glass
under any condition is 65 sq. ft. (6.04 sq.m.) Maximum unit
weight is 750 pounds (340 kg). The premium over-weight
maximum is 2000 pounds (907 kg). A technical review is
required for all over-weight requests.
For complete information on all of Viracon products including: insulating,
silk-screened, spandrel, laminated, protective, monolithic and acoustical
glass, visit www.viracon.com, or contact us at [email protected] or by
calling 800-533-2080.
CONTINUING EDUCATIONWe also work with professional organizationsand firms worldwide to provide AIA registerededucational seminars. As a registered provider
with the AIA/Continuing Education System (AIA/CES), archi-tects can receive 1.5 continuing learning units (LU’s) withAIA/CES, including health, safety and welfare credits. Visitour website for a complete listing of available educationalseminars and to schedule a presentation, or contact usat 800-533-2080.
281155 InsulGlass.qxd:Insulating 12pg.qxd 2/25/08 12:22 PM Page 15
281155 InsulGlass.qxd:Insulating 12pg.qxd 2/25/08 12:22 PM Page 16
800 Park Drive, Owatonna, MN 55060507.451.9555 800.533.2080 (Toll Free)507.444.3555 FAX (Within U.S.A.) 507.451.2178 FAX (Outside U.S.A.)E-Mail: [email protected] Internet address: http://www.viracon.com
This publication describes Viracon’s architectural insulating glass products
to help you analyze possible design options and applications. To obtain
warranty information, contact Viracon’s Architectural Inside Sales or
Technical Services Department.
The information contained in this publication is presented in good faith.
It is believed to be accurate at the time of publication. Viracon reserves
the right to change product specifications without notice and without
incurring obligation.
Viraspan and Viraconsulting are registered trademarks of Viracon.Azuria, Atlantica, Starphire and Caribia are trademarks of PPG Industries, Inc.EverGreen and Arctic Blue are trademarks of Pilkington.UltraWhite and CrystalGray are trademarks of Guardian Industries Corp.
Versalux is a registered trademark of ACH.MASTERSPEC is a registered trademark of the American Institute of Architects.
© 2008 Viracon. All rights reserved.VSG-004L MOJOJC0208
281155 InsulGlass.qxd:Insulating 12pg.qxd 2/25/08 12:21 PM Page 1