Complete Compiled Specification.pdf - Peck Ormsby Construction

1. Traffic
a. Sika 2C S/L: Sika Corp.
b. Vulkem 245: Mameco, Inc.
c. N.R. 200: Pecora.
B. Acrylic Sealant: Manufacturer’s standard one-part, nonsag, solvent-release-curing acrylic
terpolymer sealant complying with AAMA 808.3 or FS TT-S-00230 or both, with capability
when tested for adhesion and cohesion under maximum cyclic movement per ASTM C 719, to
withstand the following percentage change in joint width existing at time of application and
remain adhered to joint substrates indicated for Project without failing cohesively:
1. 7-1/2 percent movement in both extension and compression for a total of 15 percent.
2. 12-1/2 percent movement in both extension and compression for a total of 25 percent.
C. Butyl Sealant: Manufacturer’s standard one-part, nonsag, solvent-release-curing, polymerized
butyl sealant complying with ASTM C 1085 and formulated with minimum of 75 percent solids
to be nonstaining, paintable, and have a tack-free time of 24 hours or less.
D. Pigmented Narrow Joint Sealant: Manufacturer’s standard, solvent-release-curing, pigmented
synthetic rubber sealant complying with AAMA 803.3 and formulated for sealing joints 3/16
inch or smaller in width.
2.04 LATEX JOINT SEALANTS
A. General: Provide manufacturer’s standard one-part, nonsag, mildew-resistant, paintable latex
sealant of formulation indicated that is recommended for exposed applications on interior and
protected exterior locations and that accommodates indicated percentage change in joint width
existing at time of installation without failing either adhesively or cohesively.
B. Acrylic-Emulsion Sealant: Provide product complying with ASTM C 834 that accommodates
joint movement of not more than 5 percent in both extension and compression for a total of 10
percent.
C. Silicone Emulsion Sealant: Provide product complying with ASTM C 834 and, except for
weight loss measured per ASTM C 792, with ASTM C 920 that accommodates joint movement
of not more than 25 percent in both extension and compression for a total of 50 percent.
D. Products: Subject to compliance with requirements, provide one of the following:
1. Acrylic-Emulsion Sealant:
a. “AC-20”, Pecora Corp.
b. “Sonolac”, Sonneborn Building Products Div., ChemRex, Inc.
c. “Tremco Acrylic Latex 834”, Tremco, Inc.
2. Silicone-Emulsion Sealant:
a. “Trade Mate Paintable Glazing Sealant”, Dow Corning Corp.
2.05 ACOUSTICAL JOINT SEALANTS
A. Acoustical Sealant: Manufacturer’s standard nonsag, paintable, nonstaining latex sealant
complying with ASTM C 834 and the following requirements:
1. Product has flame spread and smoke developed ratings of less than 25 per ASTM E
84.
B. Acoustical Sealant for Concealed Joints: Manufacturer’s standard, nondrying, nonhardening,
nonskinning, nonstaining, gunnable, synthetic rubber sealant recommended for sealing interior
concealed joints to reduce transmission of airborne sound.
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION MARCH 2, 2009
JOINT SEALANTS 07900-4