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Spectra-Glaze® Block
Specification Data Page
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1. PRODUCT NAME
SPECTRA-GLAZE® II factory Glazed Concrete Masonry Units and Wall
Systems.
2. MANUFACTURER
The manufacturers of Spectra Glaze® units are licensed by: Spectra
Development Corporation Licensing and Chemical Division. 4230 Boston
Street, Baltimore, Maryland 21224. Mailing address P.O. Box 6063,
Baltimore, Maryland, 21231. Phone (410) 837-1810, Fax (410) 675-3684
3. PRODUCTION DESCRIPTION
Basic Description:
For exterior and interior finished wall systems. Provide integral
color and surfaces similar to smooth stone, granite or glazed tile
surfaces. Used for load-bearing and non-load-bearing walls. Can be
erected in one operation with-out backup units, at considerable cost
savings. Used in interior and exterior construction of low-rise and
high-rise buildings, offices, residential condominiums, shopping
malls, universities, government and military projects, food and
beverages processing plants, industrial and commercial facilities
high school, extended care facilities, hospitals, water treatment
plants, transportation facilities, prisons, medical buildings,
residential construction . . . wherever a smooth, hard, sealed,
glazed or stone like permanently adhered sanitary, decorative or
creative finish is required in white, cream, earth-tones or colors.
Composition:
SPECTRA-GLAZE® II Compound made with SG Polymer is furnished by The
Spectra Industries Inc., along with other components as may be
required to exceed ASTM C744, BRC standards and other Spectra
Industries Inc., performance and test standards. Compound and
technology are only valuable to licensed manufacturers. The facing
(up to 1/8" thick) is factory applied to each block and becomes
integral with the concrete, transforming the irregular gray concrete
block into a finished wall surface.
Sizes and Shapes:
All dimensions of the glazed unit are modular. The facing dimensions
are 7 3/4" x 15 3/4" There is a 1/16" lip (± 1/32") running around
the perimeter of the 7 5/8" x 15 5/8" modular block. The glazed
surface can therefore be laid with a 1/4" exposed mortar joint in
regular 8" coursing, subject to adjustment for tolerances. Units
available in nominal 2,4,6,8,10,12" thickness, standard block
heights and shapes. Units supplied will be two or three core, open
or closed end, depending upon local block practices. A line of
various shapes is furnished with basic units including stretcher,
jamb, cap and cove base units. Units are available prefaced both
sides.
Appearance:
Spectra Glaze® Block are available in their own unique range of
standard and custom colors, scale and sculptured faces-not available
in natural stone, brick and marble. Creams, whites, grays, tans and
heather and pastels provide an aged beauty and natural look that is
a pleasing alternative to limestone, synthetic stone, marble, slate,
brick, glass, high grade paint, stucco and ground face stones at a
fraction of the cost. As with all products made using naturally
occurring mined materials, attractive and characteristic ranges
exist which enhance and add interest to the appearance of walls.
With exterior use, the initial wall surface is enhanced by
weathering, which brings out the natural beauty of the composite
silica dioxide surface. The silica dioxide materials is an extremely
hard, abrasion resistant mineral carefully selected for SPECTRA
GLAZE glazings and mined from deposits formed millions of years ago
by the ice age. This is integral in the face.
Inquire for detailed results of South Florida exposure and BRC Tests
for UV. For most colors, change has been found to be minimal when
rated in accordance with ASTM standards for glazed concrete block.
Color Fastness:
The product has built in light fastness and color change has been
found to be minimal in South Florida field testing and in laboratory
accelerated testing. It is also highly impervious to acid rain.
As with most materials, proper use, design and detailing are
prerequisites. All colors show some slight change under continuous
exterior exposure. As with other exterior material, some gradual and
uniform weathering is expected. Consult the local manufacturing
plant or sales office for recommendations and performance data.
Color Range:
Standard and Designer Colors are available ranging across the
spectrum, including pastels, related deep tones, creams, white,
heather and neutrals. VARITONETM Series earth-tone finishes provide
both a surprisingly similar appearance and economical and attractive
alternative to natural materials such as granite, stone, marble,
etc. Double glazed units may be furnished with each face a different
color. Other colors can be matched upon request.
Texture and Scale:
SPECTRA-GLAZE® II Design Series and Scored Series units offer a wide
selection of texture, scale and pattern. Design Series includes
various rectilinear and curvilinear face designs in standard sizes.
Scored Series provides the choice of reduced scale and pattern with
economy of large 8 x 16 block, e.g., 8 x 8 score (DA1), 5 x 8 score
(DA5), 4 x 8 score (DA2), and brick score (DA3). Other scores may be
furnished on request. Score shall be 1/4" deep, but consult local
manufacturing plant for precise specification.
Finish:
At the time of delivery the product shall be free from chips,
cracks, and pinholes in the finished wall when viewed at a distance
of 5', at right angles to the wall. Manufacturer's patching compound
may be used by the contractor or seller to correct minor job site
damage of imperfections.
Integral Bond:
The finished facing is manufactured as a permanent part of the
block. The molded finish penetrates deep into the pores of the block
and is heat treated for durability. It becomes an integral part of
the unit that cannot be removed without destroying the concrete
itself.
Grade:
SPECTRA-GLAZE® II prefaced concrete masonry units are not graded.
Units furnished to the project must meet Licensor's manufacturing
tolerances and quality control standards, subject to sale terms and
warranty terms of supplying licensed manufacture.
Intended Use:
Standard construction detailing including dry construction, moisture
and water protection, water stops, weep holes, elastic and durable
mortar, flexible caulking of horizontal joints, metal or precast
concrete caps, flexible control joints and drainage overhangs are a
prerequisite of good design and proper use. Exterior walls must be
pointed with SG Sup'r Grout, Hydroment grout or equivalent. Durable
exterior wing walls require weep holes and SG Joint Seal epoxy
mortar thru the wall or equivalent, with horizontal joints and
return edges raked and pointed with flexible exterior grade urethane
or other durable caulk. Waterproof flashing should be used under all
capping. The preferred system is to cap off exterior walls with
waterproof flashing covered by precast slabs, metal capping or stone
caps. This approach provides good structural design since it
minimizes the number of horizontal cap joints that will be exposed
to freeze thaw and stress from wall movement. Vertical expansion
should also be used.
4. TECHNICAL DATA
SPECTRA-GLAZE® Block are manufactured to meet and exceed published
specifications for glazed masonry. The outstanding performance is
documented by periodic testing from leading independent laboratories
such as Froehling & Robertson (F&R), Materials Eng. & Testing,
Penniman & Brown (P&B), Southwest Research Institute, U.S. Testing,
Radiation Technology, South Florida. Testing, Underwriters Labs of
Can., Warrington Research Ctr., BRC Scan Testing and other
laboratories. Copies of all test reports are available upon request.
The following results represent performance characteristics that are
outlined by ASTM specifications or are developed by Spectra
Industries Inc., to provide test data of other unique qualities of
this glazed surface that may be desirable in different design
applications. Special testing can be obtained if the circumstance
dictates.
Applicable Standards and Approvals:
SPECTRA GLAZE II units meet the requirements of the following
standards and approvals:
ASTM C 90 Hollow Load Bearing Concrete Masonry Units, Type 1
ASTM C 744 Pre-Faced Concrete and Calcium Silicate Masonry Units
Federal Specifications SS-C-621 b, Form B, Concrete Masonry Units,
Hollow (and solid, pre-faced and unglazed) with Interim Amendment 2
ASTM C 67, with respect to Freezing and Thawing
USDA Approval
Public Health Service Approval. Sanitary walls in compliance with
Grade "A" Pasteurized Milk Ordinance. Public Health Service Pub. No.
229
Post Office Approval
Prison Approvals
DOD Approval
TEST RESULTS
This specification requires all equals or substitutes to meet or
exceed the following performance results and to provide reliable
authenticated test documentation.
Resistance to Abrasion:
Specimens of SPECTRA-GLAZE® II coatings, 4" square and 1/8" in
thickness tested for resistance to abrasion using Taber Abraser
equipped with CS-17 calibrase wheels with 1,000 gram loading, for
500 wear cycles.
ASTM C 744 and Fed. Spec. SS-C-621 b, Form B
RESULTS: TABER WEAR FACTOR 43.3
Chemical Resistance:
Coatings were subjected to the following chemicals according to the
specification procedure and for the indicated period of exposure:
ASTM C 744 4.2 and Fed. Spec. SS-C-621 b, Form B
RESULTS: HIGHLY RESISTANT, NO EFFECT.
Ammonium Hydroxide, tested for 12 hours, Resulting with No Effect
Acetic Acid @5%, tested for 24 hours, Resulting with No Effect
Citric Acid @20%, tested for 24 hours, Resulting with No Effect
Tannic Acid @4%, tested for 24 hours, Resulting with No Effect
Potassium Hydroxide @10%, tested for 3 hours, Resulting with No
Effect
Trisodium Phosphate @5%, tested for 24 hours, Resulting with No
Effect
Hydrogen Peroxide @3%, tested for 24 hours, Resulting with No Effect
Chlorine Bleach @1%, tested for 24 hours, Resulting with No Effect
Household Detergent (Tide) @10%, tested for 24 hours, Resulting with
No Effect
Vegetable Oil, tested for 24 hours, Resulting with No Effect
Blue-Black Ink (Watermans), tested for 1 hours, Resulting with No
Effect
Tincture of Iodine @2%, tested for 1 hours, Resulting with No Effect
Ethyl Alcohol, SAD 3A @95%, tested for 3 hours, Resulting with No
Effect
Resistance to Crazing:
Testing in accordance with ASTM C 426.
RESULTS: NO EVIDENCE OF CRAZING, CRACKING OR SPALDING.
Facing Adhesion Test:
Uncapped specimen was placed between steel bearing plates, the upper
plate having a spherical bearing head. Prefaced unit was placed with
longest dimension in horizontal plane, and cores vertical. Unit was
subject to compression load unit failure.
ASTM C 744 4.3, Fed. Spec. SS-C-621 B, Form B
RESULTS: NO FAILURE OF ADHESION of the facing material to the
concrete surfaces.
Water Absorption:
Weighed specimens of SPECTRA-GLAZE® II coating immersed in distilled
water at 70 F for three (3) consecutive 8 hour periods. Specimens
were dried superficially with towel to remove surface moisture only,
and weighed after each 8 hour exposure to determine rate of
absorption.
ASTM C 948 and C 497 M 7 and Fed. Spec. SSC621 b, Form B
RESULTS: ANY INCREASE IN WEIGHT DUE TO ABSORPTION OF WATER AFTER 24
HOURS IMMERSION WAS TOO SMALL TO BE MEASURABLE.
Fire Ratings:
Tested in accordance with ASTM Standards for concrete masonry. Fire
ratings are a measure of resistance to heat transmission, flash over
and spread of fire from one building compartment to another.
RESULTS: EXCELLENT FIRE RATINGS OF 1, 2, 3, 4 hours. Adding
insulation in the cores of blocks can further increase these
ratings.
Surface Burning Characteristics:
Tested in accordance with ASTM E 84 and ASTM C 744 4.5 and Fed.
Spec. SSC621 b, Form B.
RESULTS: MEETS OR EXCEEDS ASTM AND FED. REQUIREMENTS.
Flame spread less than 25, fuel contribution 0, smoke density less
than 50.
Resistance to Weathering:
Coated specimens, 3" x 6" exposed to 500 hours of accelerated
weathering consisting of cycles of 102 minutes of ultraviolet
radiation followed by 18 minutes of radiation plus water spray.
ASTM C 744 4.5 and Fed. Spec, SS-C-621 b, Form B
RESULTS: On comparing tested specimens of most colors with duplicate
unexposed specimens, test specimens were given ASTM RATING OF NO
CHANGE IN COLOR, GLOSS OR TEXTURE.
(See intended use and color fastness paragraph under product
description).
Cleansability and Resistance to Soiling:
Stain consisting of 0.5 gram of oil soluble range dye (C.1 solvent
orange 7, C.1. 12140), 1.0 gram of lanolin, and 5.0 grams of S.A.E.
10 lubricating oil, to area of coating approximately 1/2" in
diameter for period of 4 days. Test specimen then cleaned by placing
in Gardner M105-A washability machine, using industrial grade "Lestoil"
as cleansing agent. After 80 cycles the surface was examined.
ASTM C744 4.7 and Fed. Spec. SS-C-621 b, Form B
RESULTS: STAIN REMOVED in accordance with applicable standards for
prefaced concrete masonry specifications.
Each of the following staining media was applied to test specimens:
lead pencil #2; black crayon; magic marker (Speedry Products, Inc.);
lanolin and carbon paper (Fed. Spec. TT-P-29). Specimens were
cleaned using Gardner M105-A washability machine, with "Lestoil"
commercial grade, and paint thinner (Magic Marker stain).
ASTM C744 and Fed. Spec. SS-C-621 b, Form B
RESULTS:
Lead Pencil, tested for 10 cycles, resulting with stain removal
Black Crayon, tested for 60 cycles, resulting with stain removal
Magic Marker, tested for 150 cycles, resulting with stain removal
Lanolin & Carbon Paper, tested for 60 cycles, resulting with stain
removal
Acid Rain:
Simulated 20 year exposure to the severe New York City environment.
MET (Glazed surface exposed to 70% sulphuric / 30% nitric acids).
Test method developed by Materials Engineering Testing (MET).
RESULTS: NO SIGNIFICANT DETERIORATION of color of other facing
characteristics.
Gamma Radiation Resistance:
Test method developed by Radiation Technology (RT).
RESULTS: NO CHANGE WHEN EXPOSED TO NORMAL DOSES. Slight darkening in
accident conditions. Radiatio Technology, Inc. tests.
Freeze/Thaw Durability:
Testing in accordance with ASTM C 67 78.8,
RESULTS: NO SEPARATION, SPALDING, CRACKING OR DISINTEGRATION OF
FACING.
ASTM C 67 78.8
Light Reflectance Values:
Tested using standard light reflectance equipment.
RESULTS: Light reflectance values for all standard SPECTRA-GLAZE®
Block colors are available from your local manufacturer or Spectra
Industries Inc.
D I M E N S I O N S
The durable SPECTRA-GLAZE® surface material has precision edges with
a gentle safety taper at the edge creating a smooth flat or
sculptured wall surface between mortar joints depending on the face
style selected.
Face Dimension Tolerance: ± 1/16"
Bed Depth Tolerances:
Single face units 3¾ ", 5¾ ", 7¾ ", 11¾ " with ± 1/8"
Two face units 3 7/8", 5 7/8", 7 7/8" with ± 1/4"
Distortion Tolerance: ± 1/16"
ASTM C 744
5. INSTALLATION
Preparatory Work:
Prior to the placing of units on the project, a properly protected
sample panel at least 4' x 4' should be erected at the job site for
each color selected, and include all block types and sizes to be
used in that color to show approved appearance, color and range.
SPECTRA-GLAZE® masonry units are manufactured using patented
technology that ensures consistent dimensional integrity within
tolerances defined by ASTM C 744 for the glazed surface and ASTM C
90 for the concrete masonry units.
As measured from the points described on the attached schematic,
(Figure 1) the glazed surface has a maximum allowable variation of
1/16" documented by Paragraphs 5.1 and 5.2 of ASTM C 744. The
concrete masonry unit is manufactured to be within the dimensional
tolerance of " defined in Paragraph 6.1 of ASTM C 90.
Method:
SPECTRA-GLAZE® masonry units will be delivered to job site
pelletized. Units shall be stores as near as possible to their final
position in the wall. SPECTRA-GLAZE® masonry units are to be stored
on level ground and are to be provided with a tarpaulin or similar,
as protection from the weather. Do not double stack pallets of
SPECTRA-GLAZE® Block. Claims for chipped or damaged block will not
be allowed if stacking of pallets has occurred. Each unit is
protected by layer separators to prevent damage in transit and on
the job site. This cover and any individual cardboard covers are to
be retained until the block is to be placed in the wall. Blocks are
to be handled carefully. At minimum, follow job handling and
protection specified in Fed. Spec. SS-C-621 b, Form B for
construction site procedures.
Prior to begin installation, all units should be inspected for
conformance to manufacturer's specifications. Damaged or
nonconforming units must not be installed and shall be available for
inspection by manufacturer. Replace any units damaged by contractor
at contractor's expense. All damaged units not reported as damaged
upon inspection at time of delivery are presumed to have been
damaged by contractor or improper job site handling. Contractor, at
his expense, shall remove any scratches caused by mishandling using
SG Kleen 'n' ShineTM or other repair material. Any defective units
installed are the responsibility of the contractor.
SPECTRA-GLAZE® Block are to be installed using the glazed surface as
the guide and allowing for 1/4" apparent mortar joint per attached
schematic. (Figure 1). If installed following the schematic diagram,
the lip of the unit is hidden by the mortar joint. The lip of a
SPECTRA GLAZE® unit does not define the face thickness, but is a
function of the manufacturing process. It is essential, in order to
maintain the quality of the finished wall, that all faces are laid
even. Wherever possible, dry positioning should be employed by the
contractor in order to satisfy himself that the required tolerances
remain.
Where SPECTRA-GLAZE® Block are specified to be scored it is
recommended that when stack bond appearance is selected, use stack
bond construction. All structural joints should be raked back at
least 1/4" and allowed to set. Tuckpoint raked joints and scored
joints at the same time. Other scores may be customized to your
design.
For corner conditions use the People FriendlyTM Corners (F Series).
Soft CornersTM, standard bullnose or square corners. Factory cut
miter may be used for irregular returns.
Where SPECTRA-GLAZE® Block are to be cut to fit on the job site, a
power driven masonry saw, i.e. Clipper saw, is to be used. Units
should not be cut by hand.
SPECTRA-GLAZE® Block joints can be tooled or can be raked and
pointed with a specified mortar material. All exterior joints must
be filled and struck to protect the wall from the elements. Raked
joints or bare scores should not be used on the exterior.
For adequate water control, use large weep vents at least 4" long in
vertical joint for every second block in exterior base and
foundation --- as with normal good construction design and
installation to prevent water penetration. Also, use immediately
above all flashing, bond beam, solid filled or other water stop
locations in the wall. Continuous metal capping, stone or precast
slab plus the highest quality flashing and adequate overhangs are
required to cap off an exterior SPECTRA-GLAZE® masonry wall. Metal
capping should have at least a 4" overhang. Mortar used in capping
should be impervious to water penetration and freeze/thaw. All
exterior joints must be full and struck, never left raked. All
laying mortar should contain appropriate water repelling additives
to insure water-prof mortar joints and good adhesion. Exposed mortar
joints are raked back 1/4" and tuckpointed with epoxy mortar or
other similar water roof joint system.
Sample panels should be erected to reflect exterior specifications
prior to authorizing final construction.
For maximum exterior shine, mortar and color enhancement, apply SG
Kleen 'n' ShineTM in accordance with supplier's instructions.
As work progresses, all units should be cleaned to remove excess
mortar, mortar lumps and other materials with clean rags. Prevent
mortar from hardening on the face by promptly cleaning wall sections
as they are installed. Use soft, clean rag with masonry detergent
such as the SPECTRA line of masonry cleaners, Vanitrol, SureClean
600, or Deox in accordance with the manufacturer's instructions. Do
not use acid, steal wool or other abrasives. Rinse well and wipe
dry.
Building Codes:
SPECTRA-GLAZE® II pre faced concrete masonry units are acceptable in
all national building codes were concrete masonry units are
accepted.
Jurisdiction:
SPECTRA-GLAZE® II pre faced concrete masonry units are installed by
masons.
6. AVAILABILITY AND COST
Availability:
Representatives located throughout the Unites States, Canada and
overseas make SPECTRA-GLAZE® II units locally available in many
areas. Flexible production schedules and quick truck deliveries
often minimize job delays caused by add orders, plan changes or
forgotten shapes. Consult nearest representative or manufacturer for
units available and lead times required.
Cost:
SPECTRA-GLAZE® Block are reasonably priced compared to alternative
wall systems. See our Relative Wall Cost Folder. Installed costs
will vary by type of units, color, pattern, texture, types of
construction, location of project, freight rates, and local bidding
practices. Information for a particular project and application can
be obtained from licensed manufacturers or their distributors in the
individual project area.
7. WARRANTY
SPECTRA-GLAZE® II Block producers cannot assume responsibility for
contamination, mistreatment, or misuse of the units after they leave
their control.
Capital Industries Corp., Spectra Industries Inc., and Spectra
Development Corp., makes no guarantee, expressed or implied, nor as
to fitness for any particular purpose with respect to prefaced
concrete masonry units produced at any of the licensed world wide
manufacturing locations. The individual manufacturer's supplying
SPECTRA-GLAZE® Block will provide their own "Conditions of Sale"
including any warranty terms and limitations.
8. MAINTENANCE
SPECTRA-GLAZE® II Block, properly erected and cleaned after
construction, should require only minimal maintenance other than
normal cleaning procedures. The SPECTRA line of masonry cleaners,
pine oils or industrial detergents are recommended in most instances
but some paints and special marking inks not soluble in usual
cleaning materials may require special cleaning procedures. Contact
you nearest representative.
9. TECHNICAL SERVICES
Sales representatives are available to consult with the Design Team
regarding selection, detailing, availability and cost for specific
project requirements. For the name of your nearest sales
representative call or write, (410) 837-1810, Spectra Development
Corp., 4230 Boston Street, Baltimore, MD 21224, or your local
producer.
10. FILING SYSTEMS
SPEC DATA® II
Sweet's General Building and Renovation File
Sweet's national Buyline Service
Producer's Council Guide to Quality Construction Products
Buildcore
RIBA Product Selector Construction
Construction Canada
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