PART 1 GENERAL
1.01 WORK INCLUDED
A. WECK GLASS BLOCKS
B. WECK GLASS BLOCKS with (45, 60 or 90) minute listed U.L. fire rating.
C. Integral joint reinforcing.
D. Mortars and sealants.
1.02 RELATED WORK
A. Section (_______ - _______) Masonry.
B. Section (_______ - _______) Lintels.
C. Section (_______ - _______) Sealants.
1.03 REFERENCES
A. ASTM C15382, Hot Dipped Zinc Coating.
B. ASTM C144, Aggregate for Masonry.
C. ASTM C150, Portland Cement.
D. ASTM C207, Hydrated Lime for Masonry.
E. ASTM C207, Mortar for Unit Masonry.
F. Underwriters Laboratories Building Materials Directory, 1998 Edition.
1.04 SUBMITTALS
A. Submit WECK Catalog.
B. Submit ________ WECK GLASS BLOCK of each type for approval.
1.05 ENVIRONMENTAL REQUIREMENTS
A. Maintain materials and ambient air temperatures to a minimum of 40°F prior to, during and 48 hours after completion of work.
B. Protect WECK GLASS BLOCK from moisture prior to construction.
PART 2 PRODUCTS
20.1 ACCEPTABLE MANUFACTURERS
A. J. WECK GmbH u. Co.
2.02 GLASS UNITS
A. _______ x_______ x _______ inch.
B. _______ x _______ x _______ inch with
(45, 60 or 90) minute listed U.L. fire rating.
C. Color (Cleartone or Goldtone) ______________
D. Pattern ___________________________
E. Edge Coating -- White
latex based paint.
2.03 ACCESSORIES
A. Joint Reinforcing: Ladder type, hot dipped galvanized, 2-9 gauge parallel longitudinal wire at
2" o.c. or 3-7/8" wide block or 1-5/8" for 3-1/8" wide block and cross rods welded at 8" o.c.
B. Panel Anchors: 20 gauge x 1-3/4" x 24" hot dipped galvanized steel with staggered perforations as supplied by Glass Masonry, Inc.
C. Perimeter Chase: Masonry recess, aluminum channel or steel channel.
D. Asphalt Emulsion: Karnac 100 or equal.
E. Expansion Strips: 3/8" x 3-1/2" polyethylene plastic or glass fiber.
F. Sealant: Silicone Type _________ Color.
G. Backer Rod: As recommended by sealant
supplier.
2.04 MORTAR MATERIALS
A. Shall be prepared according to ASTM C270 for Type 5 Mortar. Mortar to have 1 part Portland Cement (Type 1), 1 part lime and 4-1/2 to 6 parts of fine sand passing No. 20 sieve and free of iron compounds to avoid stains. Use white Portland Cement and silica sand for white joints. Mix mortar drier than normal and only an amount that will be used in 1/2 to 1 hour. Glass block will not absorb water the same as brick. Do not use retempered mortar. Do not use antifreeze compounds or accelerators.
B. Add ________ mortar color per manufacturer’s instructions. Side walls of WECK GLASS BLOCK must be same color as mortar. If mortar is not white, strip paint and repaint with colored latex paint.
C. Add Latricrete 8510 to increase waterproofing qualities of mortar.
PART 3 EXECUTION
3.01 PREPARATION
A. Verify that pocket recesses or chases provided under other sections are accurately located and sized.
B. Establish and protect lines, levels and coursing.
3.02 INSTALLATION
A. Arrange coursing pattern to provide consistent joint work throughout.
B. Locate and secure perimeter metal chase.
C. Coat sill under units with asphalt emulsion as a bond breaker.
D. Mortar joints must be solid. Furrowing not permitted. Neatly tool surface to a concave joint.
E. Place panel reinforcing in horizontal joint above first course of block and not more than 18" o.c. for Standard Series, every other course for Thinline Series and every course for Fire Stop Series. Panel anchors if used shall be installed in the same joints as reinforcing.
F. Isolate panel from adjacent construction on sides and top with expansion strips. Keep expansion joint voids clear of mortar.
G. Maintain uniform joint width of 1/4" ±1/8".
H. Maximum variation from plane of unit to next
unit – 1/32".
I. Maximum variation of panel from plane – 1/16".
J. Do not use retempered mortar.
K. Do not tap glass block with steel tools.
L. When mortar has set, pack backer rod in jamb and head channels. Recess to allow for sealant.
M. Apply sealant.
3.03 CLEANING
A. Remove excess mortar from glass surfaces with a damp cloth before set occurs.
B. Number 4 steel wool can be used to remove remaining mortar.
For technical or installation information request our Design Guide.
Technical drawings have been developed on disks for CAD systems. DIN EN ISO 9001 Certified
