������������������������ SECTION 07900
������������������������ JOINT SEALERS
PART 1� GENERAL
1.1 SECTION INCLUDES
��� A.� Sealing of exterior joints.
��� B.� Sealing of interior joints.
��� C.� Sealing of floor joints.
��� D.� Sealing of pavement joints.
��� E.� Sealing of joints immersed in water.
��� F.� Sealing of glazing joints.
1.2 SECTION DOES NOT INCLUDE
��� A.� Sealants in through-penetration firestop assemblies.
��� B.� Hot-pour paving sealants.
1.3 RELATED SECTIONS
��� A.� Section 02520 - Portland Cement Concrete Paving.
��� B.� Section 03300 - Cast-In-Place Concrete.
��� C.� Section 04300 - Unit Masonry System.
��� D.� Section 05805 - Expansion Joint Assemblies.
��� E.� Section 06100 - Rough Carpentry.
��� F.� Section 06400 - Architectural Woodwork.
��� G.� Section 07270 - Firestopping.
��� H.� Section 07620 - Sheet Metal Flashing and Trim.
��� I.� Section 08520 - Aluminum Windows.
��� J.� Section 08800 - Glass and Glazing.
��� K.� Section 08920 - Glazed Aluminum Curtain Wall System.
��� L.� Section 09260 - Gypsum Board Systems.
��� M.� Section 09300 - Tile.
1.4 REFERENCES
��� A.� ASTM C 962 - Use of Elastomeric Joint Sealants.
��� B.� ASTM D 1752 - Standard Specification for Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction.
1.5 SUBMITTALS
��� A.� Submit under provisions of Section 01300.
��� B.� Product Data:� Provide manufacturer's standard details and installation instructions.
��� C.� Samples:� Submit samples of cured sealant where required to match the Architect's sample.
��� D.� Test Reports:
������� 1.� Submit results of manufacturer's preconstruction testing.
������� 2.� Submit report of field substrate adhesion tests.
������� 3.� Submit installer's preconstruction inspection report.
������� 4.� Identify any substrates requiring primers, type of primer recommended by manufacturer, and surface preparation required.
��� E.� Installer Qualifications:� Submit name, address, telephone, date company founded.
1.6 QUALITY ASSURANCE
��� A.� Installer Qualifications:
������� 1.� Firm regularly engaged in installation of sealers of the type specified for not less than 5 years.
��� B.� Preconstruction Testing:
������� 1.� Transmit samples of actual project materials to joint sealer manufacturer for adhesion testing, attention: Technical Director.
������� 2.� Identify samples by material manufacturer, origin, designed use, project, Contractor's name, and joint sealer to be applied.� Include drawings or sketches showing intended use, where applicable.
������� 3.� Sealer manufacturer shall perform adhesion testing to determine proper surface preparation, effective cleaning solvents, and whether priming is necessary to achieve optimum adhesion.
������� 4.� Sealer manufacturer shall test porous substrates submitted to determine potential for staining.
1.7 DELIVERY, STORAGE, AND HANDLING
��� A.� Deliver materials in manufacturer's original, unopened containers.
��� B.� Store between 40 and 90 degrees F.
1.8 PROJECT CONDITIONS
��� A.� Do not apply clear water repellent sealers, waterproofing compounds, or other architectural coatings to surfaces to which sealers will be applied without first verifying compatibility.
��� B.� Install sealers when air and substrate temperatures are over 40 degrees F and rising, but less than 100 degrees F, unless specific installation instructions are obtained from manufacturer.
1.9 WARRANTY
��� A.� The Contractor and the installer shall jointly and severally warrant joint sealers against failure in material and workmanship for a period of 5 years from the date of Substantial Completion.
PART 2� PRODUCTS
2.1 MANUFACTURER
��� A.� Provide joint sealers manufactured by Polymeric Systems, Inc., 723 Wheatland Street, Phoenixville, PA 19460-3394.� Telephone outside PA:� 800-CAULK-IT;� inside PA:� 610-935-1170;� FAX:� 610-935-7123.
������� 1.� Substitutions will not be acceptable.
2.2 JOINT SEALERS
��� A.� Acrylic-Latex:� PSI-701 Acrylic-Latex Caulk.
��� B.� Butyl Rubber:� PSI-301 Butyl Rubber Caulk.
��� C.� Epoxy:� PSI-550 Epoxy Sealant.
��� D.� Polysulfide:� PSI-7000 Sealant Polysulfide Rubber Caulk.
��� E.� Acetoxy Silicone:�
������� 1.� PSI-601 Acetoxy Silicone Sealant.
������� 2.� Food contact:� PSI-601-FG Food Grade Acetoxy Silicone Sealant.
��� F.� Neutral Cure Silicone:� PSI-631 Non-Corrosive Silicone Sealant.
��� G.� Low Modulus Silicone Sealant:� PSI-641 Low Modulus Silicone Sealant.
��� H.� High-Temperature Silicone:� PSI-613 Hi-Temperature Silicone Adhesive/Sealant.
��� I.� One-Part Urethane:�
������� 1.� Gun-grade:� PSI-901 One-Part Urethane Sealant.
������� 2.� Self-leveling:� Flexiprene PSI-951 One-Part Self-Leveling Urethane Sealant.
��� J.� Two-Part Urethane:� Flexiprene 2000 Multi-Component Urethane Sealant.
��� K.� Epoxidized Urethane:
������� 1.� Gun-grade:� PSI-501/RC-2 Epoxidized Urethane Sealant.
������� 2.� Self-leveling:� PSI-551/RC-2 Self-Leveling Epoxidized Urethane Sealant.
��� L.� Immersion-Type Polyurethane:
������� 1.� Gun-grade:� PSI-270 Reservoir Sealant (Gun-Grade).
������� 2.� Self-leveling:� PSI-270SL Reservoir Sealant (Self-Leveling).
2.3 ACCESSORY MATERIALS
��� A.� Primers:� Provide primers where required by the schedule at the end of this Section, and also where preconstruction tests indicate the need for primers to obtain optimum adhesion.
��� B.� Joint Backing:� Provide joint backing to control depth of sealant and to prevent 3-sided bond.
������� 1.� Backer rod:� Closed cell polyethylene foam, ASTM C 962, Type A;� diameter approximately 1-1/3 times joint width to provide support during sealer application and tooling.
������� 2.� Bond-breaker tape:� Polyethylene tape;� width equal to joint opening.� Provide where back-up material is not necessary for depth control or where a type is used that does not have release properties.
������� 3.� Concrete expansion joint filler:� Pre-formed, nonextruding, cellular neoprene sponge rubber expansion joint filler:� ASTM D 1752, Type 1.
2.4 COLORS
��� A.� Provide manufacturer's standard colors as selected by the Architect.
������� 1.� PSI-701 Acrylic-Latex Caulk.
����������� a.� White.
������� 2.� Butyl Rubber:� PSI-301 Butyl Rubber Caulk.
����������� a.� White, gray, bronze.
������� 3.� PSI-550 Epoxy Sealant.
����������� a.� Black, gray.
������� 4.� PSI-7000 Sealant Polysulfide Rubber Caulk.
����������� a.� Off-white, limestone, gray, bronze, tan, black.
������� 5.� PSI-601 Acetoxy Silicone Sealant.
����������� a.� Clear, white, bronze, black, aluminum.
������� 6.� PSI-601-FG Food Grade Acetoxy Silicone Sealant.
������� 7.� PSI-631 Non-Corrosive Silicone Sealant.
����������� a.� Clear, white, black.
������� 8.� PSI-641 Low Modulus Silicone Sealant.
����������� a.� Clear, white, limestone, bronze, gray.
������� 9.� PSI-613 Hi-Temperature Silicone Adhesive/Sealant.
����������� a.� Red.
������� 10. PSI-901 One-Part Urethane Sealant.
����������� a.� White, limestone, gray, bronze, tan, black.
������� 11. Flexiprene PSI-951 One-Part Self-Leveling Urethane Sealant.
����������� a.� Gray, limestone.
������� 12. Flexiprene 2000 Multi-Component Urethane Sealant.
����������� a.� White, limestone.
������� 13. PSI-501/RC-2 Epoxidized Urethane Sealant.
����������� a.� White, off-white, limestone, gray, bronze, pine, tan, black.
������� 14. PSI-551/RC-2 Self-Leveling Epoxidized Urethane Sealant.
������� 15. PSI-270 Reservoir Sealant (Gun-Grade).
����������� a.� White, off-white, limestone, gray, bronze, pine, black.
������� 16. PSI-270SL Reservoir Sealant (Self-Leveling).
����������� a.� White, off-white, limestone, gray, bronze, pine, black.
��� B.� Provide custom colors to match the Architect's samples.
������� 1.� PSI-301 Butyl Rubber Caulk.
������� 2.� PSI-7000 Sealant Polysulfide Rubber Caulk.
������� 3.� PSI-601 Acetoxy Silicone Sealant.
������� 4.� Flexiprene 2000 Multi-Component Urethane Sealant.
������� 5.� PSI-501/RC-2 Epoxidized Urethane Sealant.
������� 6.� PSI-551/RC-2 Self-Leveling Epoxidized Urethane Sealant.
������� 7.� PSI-270 Reservoir Sealant (Gun-Grade).
������� 8.� PSI-270SL Reservoir Sealant (Self-Leveling).
��� C.� Provide the following colors:
������� 1.� Sealant joints in masonry:� Match mortar color.
������� 2.� Joints in precast concrete:� Match color of precast matrix.
������� 3.� Joints around doors, windows, and other openings:� Match color of adjacent wall material.
������� 4.� Joints in paving:� Manufacturer's standard gray.
������� 5.� Joints in interior floors:� Custom color to match the Architect's sample.
������� 4.� _________________________.
2.5 MIXING
��� A.� Mix multi-part sealers in accordance with manufacturer's instructions, using only whole units.� Do not mix partial units.
PART 3� EXECUTION
3.1 EXAMINATION
��� A.� Verify that dimensions are correct and substrate is in proper condition for installation.� Do not proceed with installation until unsatisfactory conditions have been corrected.
��� B.� Substrates shall be clean, dry, and free of loose aggregate, laitance, paint, corrosion, oil, grease, tar, asphalt, mastic compounds, wax, waterproofing agents, release agents, and other deleterious substances.
3.2 PREPARATION
��� A.� Remove foreign substances from substrate.� Clean substrate in accordance with manufacturer's instructions.
��� B.� Do not damage adjacent finishes.
������� 1.� Mask adjacent finished surfaces and adjacent porous surfaces that would be damaged by primer, sealant, or cleaning agents.
��� C.� Prime surfaces to receive sealant in accordance with manufacturer's instructions, and allow to dry before installing sealant.� Do not apply primer to surfaces outside of the joint.� Prime surfaces prior to installing backer rod or bond-breaker tape.
��� D.� Install joint backing.� Do not puncture, twist, compress more than 50 percent, or stretch backer during installation.
������� 1.� Install joint backing to control joint depth as indicated and to prevent 3-sided bond.
������� 2.� Install to control depth at midpoint of sealant as follows, unless otherwise indicated in the drawings or the manufacturer's instructions:
����������� a.� Joints 1/4-inch to 1/2-inch wide:� Depth equal to width.
����������� b.� Joints over 1/2-inch wide:� 1/2-inch depth.
3.3 INSTALLATION
��� A.� General:� Install sealants in accordance with manufacturer's printed instructions and the requirements of ASTM C 962.
��� B.� Gun-Grade Sealers:� Extrude sealer to completely fill joint.� Tool to compress sealer against sides of joint and to eliminate air bubbles.� Leave a neat, slightly recessed concave surface, unless otherwise indicated.
��� C.� Self-Leveling Sealers:� Pour sealer flush with adjacent surfaces.
��� D.� Self-Leveling Sealers:� Pour sealer to fill joint, slightly recessed below adjacent surfaces.
3.4 CLEANING
��� A.� Clean primer and sealant from adjacent surfaces.� Wipe fresh sealant immediately from adjacent surfaces.� Cleaning agents used to remove sealant from equipment, tools, and impervious substrates may damage architectural finishes.� Do not use agents harmful to finishes.
��� B.� Remove masking tape from completed joints.
3.5 FIELD QUALITY CONTROL
��� A.� Make a cut in the cured sealant across the joint the entire depth of the sealant.� Make two vertical cuts several inches long, paralleling the sides of the joint as closely as possible and extending down from the cross cut.� Grasp the free length of sealant and pull at a 90 degree angle, tearing sealant from joint for several inches.
������� 1.� Sealant tears cohesively:� Pass.
������� 2.� Sealant fails in adhesion at joint face:� Fail.� Remove, prepare anew, and reinstall failed sealants.
3.6 SCHEDULE OF JOINT SEALERS
��� A.� General-Purpose Interior and Exterior Applications:
������� 1.� Sealer:
����������� a.� One-part, gun-grade polyurethane.
����������� b.� Two-part polyurethane.
����������� c.� Epoxidized urethane.
����������� d.� Polysulfide.
����������� e.� Neutral-cure silicone.
����������� f.� Low modulus silicone.
������� 2.� Applications:
����������� a.� Joints and recesses between adjacent constructions and frames, sills, and subsills of windows, doors, curtainwall, storefront, louvers, etc.
����������� b.� Coping joints and wash joints in precast concrete, cast stone, or natural stone.
����������� c.� Masonry joints beneath shelf angles.
����������� d.� Around penetrations in exterior walls.
����������� e.� Under door thresholds, and at bottom of door frames.
����������� f.� Wherever necessary to prevent infiltration of water or air into or through exterior building envelope.
��� B.� Other Exterior Applications:
������� 1.� Sealer:
����������� a.� Neutral cure silicone.
����������� b.� Low modulus silicone.
������� 2.� Applications:
����������� a.� Between adjacent construction and gravel stops, copings, fascias, and miscellaneous flashings.
����������� b.� Metal flashing inserted into reglet.
����������� c.� Top edge of surface mounted counterflashing.
����������� d.� Expansion and control joints in masonry where expansion joint covers are not indicated.
����������� e.� Joints between new and existing exterior construction.
��� C.� Interior Wetted Areas:
������� 1.� Sealer:� Acrylic-latex.
������� 2.� Applications:
����������� a.� Between adjacent construction and vanities, shower stalls, bathtub and shower enclosures, sinks, counter tops, plumbing cut-outs, plumbing fixtures, etc.
��� D.� Food Contact Surfaces:
������� 1.� Primer:� None.
����������� a.� Glass (non-coated).
����������� b.� Ceramic tile, quarry tile.
������� 2.� Primer:� PSI-690 Primer.
����������� a.� Aluminum (anodized and mill finish).
����������� b.� Iron and steel (carbon, stainless, galvanized).
����������� c.� Plastic (ABS, PVDF, polyurethane, PVC).
����������� d.� Wood.
����������� e.� Marble, slate.
������� 3.� Primer:� PSI-691 Primer.
����������� a.� Concrete.
������� 4.� Sealer:� Food contact acetoxy silicone.
������� 5.� Applications:
����������� a.� Between adjacent construction and sinks, counter tops, equipment, plumbing cut-outs, plumbing fixtures, etc.
��� E.� Interior High-Movement Joints:
������� 1.� Sealer:
����������� a.� One-part, gun-grade polyurethane.
����������� b.� Two-part polyurethane.
����������� c.� Epoxidized urethane.
����������� d.� Polysulfide.
������� 2.� Applications:
����������� a.� At resilient joint between interior partitions and floor framing above.
��� F.� Other Interior Applications:
������� 1.� Sealer:
����������� a.� Acrylic-latex.
����������� b.� Butyl rubber.
������� 2.� Applications:
����������� a.� Between adjacent construction and equipment, shelving, casework, furniture, etc.
����������� b.� Perimeters of door and window frames, access panels, etc.
����������� c.� Between interior partitions and adjoining concrete or steel columns, walls, or other construction.
����������� d.� Other exposed locations within partitions to seal against passage of air.
����������� e.� Other interior joints of small dimension which require painting.
����������� f.� Gypsum board partitions:
�������������� 1)� Between gypsum panels and metal track at floors and dissimilar walls; install sealant just prior to installation of gypsum panel.
�������������� 2)� Between adjacent face layers of abutting intersection gypsum board partitions;� install sealant before taping and finishing joint.
�������������� 3)� Between gypsum panels and penetrations:� Seal around openings of ducts, pipes, etc.� Seal sides and backs of electrical boxes.
�������������� 4)� Seal control joints prior to installing control joint trim.
����������� g.� Other concealed locations within partitions to completely seal against passage of air.
������� 3.� Allow sealant to cure before painting over joint.
��� G.� Exterior Traffic Surfaces:
������� 1.� Sealer:� Self-leveling epoxidized urethane.
������� 2.� Applications:
����������� a.� Control and expansion joints in sidewalks and pavements.
��� H.� Interior Traffic Surfaces:
������� 1.� Sealer:
����������� a.� Self-leveling epoxidized urethane.
����������� b.� One-part self-leveling urethane.
������� 2.� Applications:
����������� a.� Control and expansion joints in floors.
��� I.� Interior Heavy Traffic Surfaces:
������� 1.� Surface preparation:� Freshly saw-cut or blast-clean joints;� blow with oil-free compressed air.
������� 2.� Sealer:� Epoxy.
����������� a.� Pour flush with adjacent surface in 2 pours in accordance with manufacturer's instructions.
������� 3.� Applications:� Control joints in floors subject to vehicular traffic.
�������
��� J.� Joints Subject to Water Immersion:
������� 1.� Primer:� Primer 67.
������� 2.� Sealer:
����������� a.� Immersion-type gun-grade polyurethane.
����������� b.� Immersion-type self-leveling polyurethane.
������� 3.� Applications:
����������� a.� Joints subject to water immersion.
����������� b.� Joints in water tanks.
����������� c.� Joints in fountains and pools.
������� 4.� Allow to cure at least 5 days before immersing in water.
��� K.� High-Temperature Surfaces:
������� 1.� Metal primer:� PSI-690.
������� 2.� Sealer:� High-temperature silicone.
������� 3.� Applications:
����������� a.� Between adjacent construction and engine exhaust pipes, hot water or steam pipes, etc.
��� L.� Glazing:
������� 1.� Primer:� None.
����������� a.� Glass (non-coated).
����������� b.� Ceramic tile, quarry tile.
������� 2.� Primer:� PSI-690 Primer.
����������� a.� Aluminum (anodized and mill finish).
����������� b.� Iron and steel (carbon, stainless, galvanized).
����������� c.� Plastic (ABS, PVDF, polyurethane, PVC).
����������� d.� Wood.
����������� e.� Marble, slate.
������� 3.� Primer:� PSI-691 Primer.
����������� a.� Concrete.
������� 4.� Sealer:� Acetoxy silicone.
������� 5.� Applications:
����������� a.� Glazing, including butt and lap sheer joints, stopless glazing, and cap, head and toe bead in conventional glazing.
����������� b.� Curtain wall.
����������� c.� Storefront.
����������� d.� Glass partitions.
����������� e.� Glass blocks.
����������� f.� Solar panels.
����������� g.� Skylights.
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