SECTION JOINT SEALERS

Size: px

Start display at page:

Download "SECTION JOINT SEALERS"

Ruth Pitts
5 years ago
Views:

1 SECTION JOINT SEALERS PART 1 GENERAL 1.01 SECTION INCLUDES A. Sealants and joint backing. B. Precompressed foam sealers. C. The sealant contractor shall make a comprehensive assessment of all conditions on the project where specified sealants will be needed for a complete seal of the exterior shell and interior sealing and caulking conditions and provide a complete sealant packing in the bid RELATED REQUIREMENTS A. Section Glazing: Glazing sealants and accessories SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide data indicating sealant chemical characteristics. C. Samples: Submit two samples, 1/4 x 2 inch in size illustrating sealant colors for selection QUALITY ASSURANCE A. Applicator Qualifications: Company specializing in performing the work of this section with minimum two years experience FIELD CONDITIONS A. Maintain temperature and humidity recommended by the sealant manufacturer during and after installation. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Silicone Sealants: 1. GE Silicones. 2. BASF Construction Chemicals-Building Systems: 3. Tremco, Inc. B. Polyurethane Sealants: 1. BASF Construction Chemicals-Building Systems: 2. Tremco, Inc. C. Acrylic Sealants (ASTM C920): 1. Tremco Global Sealants: D. Butyl Sealants: 1. Bostik Inc: 2. Pecora Corporation: 3. Tremco, Inc: E. Preformed Compressible Foam Sealers: 1. EMSEAL Joint Systems, Ltd: 2. Sandell Manufacturing Company, Inc: 3. Dayton Superior Corporation: JOINT SEALERS

2 McClellan Blakemore Architects 2.02 SEALANTS A. Type P-1 -General Purpose Exterior Sealant: Polyurethane; ASTM C920, Grade NS, Class 25, Uses M, G, and A; multi- component. 1. Applications: Use for: a. Control, expansion, and soft joints in masonry. b. Joints between concrete and other materials. c. Joints between metal frames and other materials. d. Other exterior joints for which no other sealant is indicated. B. Type B-1 -Exterior Metal Lap Joint Sealant: Butyl or polyisobutylene, nondrying, nonskinning, noncuring. 1. Applications: Use for: a. Concealed sealant bead in sheet metal work. b. Concealed sealant bead in siding overlaps. c. Under thresholds. C. Type LX-1 -General Purpose Interior Sealant: Acrylic emulsion latex; ASTM C 834,, Grade NF single component, paintable. a. AC-20 manufactured by Pecora Corp. b. Sonolac manufactured by Sonneborn Building Products., ChemRex, Inc. c. Tremco Acrylic Latex 834 manufactured by Tremco, Inc. a. Interior wall and ceiling control joints. b. Perimeter of hollow metal door frames in gypsum drywall. c. Other interior joints for which no other type of sealant is indicated. D. Type SIL-1 -Bathtub/Tile Sealant: White silicone; ASTM C920, Uses I, M and A; single component, mildew resistant. 1. Product: One of the following: a. 786 manufactured by Dow Corning Corp. b. Sanitary 1700 manufactured by GE. c. Rhodorsil 6C manufactured by Rhone-Poulenc, Inc. 2. Applications: Use for: a. Joints between plumbing fixtures and floor and wall surfaces. E. Type AC-1 -Acoustical Sealant for Concealed Locations: Permanently tacky non-hardening butyl sealant. 1. Applications: Use for concealed locations only: a. Sealant bead between top stud runner and structure and between bottom stud track and floor. F. Type P-2 - Interior Floor Joint Sealant: Polyurethane, self-leveling; ASTM C920, Grade P, Class 25, Uses T, M and A; single component. G. Type PAV-1 -Concrete Paving Joint Sealant: Polyurethane, self-leveling; ASTM C920, Class 25, Uses T, I, M and A; multi- component. 1. Color: Color as selected. a. Vulkem 922 manufactured by Mameco International, Inc. b. Dynatrol II manufactured by Pecora Corp. c. Dymeric manufactured by Tremco Inc. a. Joints in sidewalks and vehicular paving JOINT SEALERS

3 H. Type B-2 -Butyl Sealant: ASTM C920, Grade NS, Class 12-1/2, Uses NT, M, A, G, O; single component, solvent release, non-skinning, non-sagging. 1. Product: One of the following: a. BC-185 manufactured by Pecora Corp. b. PTI 757 manufactured by Protective Treatments, Inc. c. Tremco Butyl Sealant manufactured by Tremco, Inc. 2. Applications: Use for: a. Under thresholds at doors in exterior walls. I. Type P-3 -Nonsag Polyurethane Sealant: ASTM C 920, Grade NS, Class 25, Uses NT, M, A, O; single component, chemical curing, non-staining, non bleeding, non-sagging type. a. Vulkem 921 manufactured by Mameco International, Inc. b. Dynatrol I manufactured by Pecora Corp. c. Dymonic manufactured by Tremco Inc. a. As specified in Section Sheet Metal Flashing and Trim. J. Type SIL-2 -Silicone Sealant: ASTM C920, Grade NS, Class 25, Uses NT, A, G, M, O; single component, neutral curing, non-sagging, non-staining, fungus resistant, non-bleeding. a. Dow Corning 790 manufactured by Dow Corning Corp. b. Silpruf SCS 2000 manufactured by GE. c. Rhodorsil 5C manufactured by Rhone-Poulenc, Inc. 3. Movement Capability: Plus and minus 25 percent. 4. Service Temperature Range: -65 to 180 degrees F. 5. Shore A Hardness Range: 15 to Applications: Use for: a. Interior and exterior perimeter joints of metal frames in exterior walls. K. Type SIL-4 -Silicone Sealant: ASTM C 920, Grade NS, Class 25, Uses NT, A, G, M, O; single component, solvent curing, non-sagging, non-staining, fungus resistant, non-bleeding. a. Dow Corning 999A manufactured by Dow Corning Corp. b. SCS 1000 manufactured by GE. c. Rhodorsil 3B manufactured by Rhone-Poulenc, Inc. 3. Movement Capability: Plus and minus 25 percent. 4. Service Temperature Range: -65 to 180 degrees F. 5. Shore A Hardness Range: 15 to Applications: Use for: a. Joints in aluminum storefront framing system. L. Type PC-1 -Multi Component Sealant:[<>];, chemical curing, non-sagging, non-staining, a. Dymeric 511 manufactured by Tremco Inc.. b. Sika 2-C manufactured by Sikaflex. a. Precast Concrete Wall Panel Joints. JOINT SEALERS

4 McClellan Blakemore Architects 2.03 ACCESSORIES A. Primer: Non-staining type, recommended by sealant manufacturer to suit application. B. Joint Backing: Round foam rod compatible with sealant; ASTM D 1667, closed cell PVC; oversized 30 to 50 percent larger than joint width. C. Bond Breaker: Pressure sensitive tape recommended by sealant manufacturer to suit application. PART 3 EXECUTION 3.01 EXAMINATION A. Verify that substrate surfaces and joint openings are ready to receive work. B. Verify that joint backing and release tapes are compatible with sealant PREPARATION A. Remove loose materials and foreign matter that could impair adhesion of sealant. B. Clean and prime joints in accordance with manufacturer's instructions. C. Perform preparation in accordance with manufacturer's instructions and ASTM C1193. D. Protect elements surrounding the work of this section from damage or disfigurement INSTALLATION A. Perform work in accordance with sealant manufacturer's requirements for preparation of surfaces and material installation instructions. B. Perform installation in accordance with ASTM C1193. C. Perform acoustical sealant application work in accordance with ASTM C919. D. Measure joint dimensions and size joint backers to achieve width-to-depth ratio, neck dimension, and surface bond area as recommended by manufacturer. E. Install bond breaker where joint backing is not used. F. Install sealant free of air pockets, foreign embedded matter, ridges, and sags. G. Apply sealant within recommended application temperature ranges. Consult manufacturer when sealant cannot be applied within these temperature ranges. H. Tool joints concave CLEANING A. Clean adjacent soiled surfaces PROTECTION A. Protect sealants until cured SCHEDULE - Provide sealant at locations listed in 2.02 and as listed herein. A. Exterior Joints for Which No Other Sealant Type is Indicated: Type P-1; colors as selected. B. Control and Expansion Joints in Paving: Type PAV-1. C. Exterior Wall Expansion Joints: Type SIL-2. D. Control, Expansion, and Soft Joints in Masonry, and Between Masonry and Adjacent Work: JOINT SEALERS

5 Type SIL-2. E. Butt Joints in Exterior Metal Work and Siding: Type P-3. F. Under Exterior Door Thresholds: Type B-2. G. Joints Between Plumbing Fixtures and Walls and Floors. H. In STC-Rated Walls, Between Metal Stud Track/Runner and Adjacent Construction: Type AC-1. I. Hollow metal frames, to Drywall: Type: LX-1. J. Precast Concrete Butt Joints: Type: PC-1 K. Joints in aluminum storefront framing system: Type: SIL-4. L. At countertops and walls, LX-1, Color As Selected by Architect. END OF SECTION JOINT SEALERS

THERMAL AND MOISTURE PROTECTION

DIVISION 7 THERMAL AND MOISTURE PROTECTION SECTION 07900 JOINT SEALERS PART 1 GENERAL 1.1 SECTION INCLUDES A. Preparing substrate surfaces. B. Sealant and joint backing. 1.2 SUBMITTALS A. Submit under