28033 SECTION 07900 - JOINT SEALERS PART 1 - GENERAL

1 28033 JOINT SEALERS 07900 -1 SECTION 07900 - JOINT SEALERS part 1 - GENERAL DESCRIPTION: A. Work under this SECTION is subject to requirements of the Contract Documents including the GENERAL Conditions and Supplementary Conditions and applicable portions of Division 1 - GENERAL Requirements. B. The work consists of all labor, material and equipment necessary and required to complete all JOINT SEALERS as shown on the drawings and specified herein. RELATED WORK SPECIFIED ELSEWHERE: A. Firestopping: SECTION 07270. B. Glazing SEALERS : SECTION 08800. C. Sealer in conjunction with gypsum board: SECTION 09250. QUALITY ASSURANCE: A. Qualifications of Installers: Employ only experienced craftsmen, skilled in the installation of specified products.

2 B. Single Source Responsibility: Obtain JOINT sealer materials from a single manufacturer for each different product required. C. Pre-Construction Field Testing: Prior to installation of JOINT SEALERS , field test their adhesion to JOINT substrates as follows: 1. Locate test joints where indicated or, if not indicated, as directed by Architect. 2. Conduct field tests for each application indicated below: a. Each type of elastomeric sealer and JOINT substrate indicated. b. Each type of non-elastomeric sealer and JOINT substrate indicated. 3. Notify Architect one week in advance of the dates and times when mock-ups with be erected. 4. Arrange for tests to take place with JOINT sealer manufacturer s technical representative present. 5. Test Method: Test JOINT SEALERS by hand pull method described below: a.

3 Install JOINT SEALERS in 5 feet JOINT lengths using same materials and methods for JOINT preparation and JOINT sealer installation required for completed work. Allow SEALERS to cure fully before testing. b. Make knife cuts horizontally from one side of JOINT to the other followed by 2 vertical cuts approximately 2 inches long at side of JOINT and meeting horizontal cut at top of 2 inch cuts. Place a mark 1 inch from top of 2-inch piece. c. Use fingers to grasp 2 inch piece of sealer just above 1 inch mark, pull firmly down at a 90 degree angle or more while holding a ruler 28033 JOINT SEALERS 07900 -2 along side of sealer. Pull sealer out of JOINT to the distance recommended by sealer manufacturer for testing adhesive capability, but not less than that equaling specified maximum movement capability in extension; hold this position for 10 seconds.

4 6. Report whether or not sealer in JOINT connected to pulled-out portion failed to adhere to JOINT substrates or tore cohesively. Include data on pull distance used to test each type of product and JOINT substrate. 7. Evaluation of Field Test Results: SEALERS not evidencing adhesive failure from testing, in absence of other indications of non-compliance with requirements, will be considered satisfactory. Do not use SEALERS that fail to adhere to JOINT substrates during testing. REFERENCES: A. Standards: 1. ASTM C834 - Standard Specifications for Latex Sealing Compounds. 2. ASTM C804 - Recommended Practice for Use of Solvent-Release Type SEALERS . 3. ASTM D1056 - Flexible Cellular Materials - Sponge or Expanded Rubber.

5 4. ASTM C1565 - Flexible Cellular Materials - Vinyl Chloride Polymers and Co-Polymers (Open Cell Foam). 5. ASTM C920 - Standard Specifications for Sealing Compound, Rubber Base, One Component. B. Manufacturer s Catalogs: The acceptable manufacturer s catalogs, current at date of bidding documents, are incorporated by reference to the same force and effect as if repeated herein in full. SUBMITTALS: A. Product Data: Materials description and current printed installation instructions for each product. B. Product data from manufacturers for each JOINT sealer product required. 1. Certification by JOINT sealer manufacturer that SEALERS plus the primers and cleaners required for sealer installation comply with local regulations controlling use of volatile organic compounds.

6 C. Samples for initial selection purposes in form of manufacturer s standard bead samples, consisting of strips of actual products showing full range of colors available, for each product exposed to view. D. Certificates from manufacturers of JOINT SEALERS attesting that their products comply with specification requirements and are suitable for the use indicated. E. Qualification data complying with requirements specified in Quality Assurance article. Include list of completed projects, with project names and addresses, names of Architects and Owners, plus other information specified. DELIVERY, STORAGE AND HANDLING: A. Deliver all products in manufacturer s original containers, with seals unbroken, labels, product and manufacturer s names intact and legible.

7 B. Store all products in a manner to prevent damage, in a secure place, out of way of construction operations. Provide protection until ready for use. C. Handle in accordance with manufacturer s recommendations. 28033 JOINT SEALERS 07900 -3 JOB CONDITIONS: A. Weather: Do not install products during adverse weather conditions. B. Temperature: Ensure that surface and ambient temperatures are within the range recommended by the manufacturer. C. JOINT Width Conditions: Do not proceed with installation of JOINT SEALERS where JOINT widths are less than allowed by JOINT sealer manufacturer for application indicated. D. JOINT Substrate Conditions: Do not proceed with installation of JOINT SEALERS until contaminants capable of interfering with their adhesion are removed from JOINT substrates.

8 WARRANTY: A. Contractor s Warranty: 2 years in accordance with GENERAL Conditions. part 2 - PRODUCTS MATERIALS, GENERAL : A. Compatibility: Provide JOINT SEALERS , JOINT fillers and other related materials that are compatible with one another and with JOINT substrates under conditions of service and application, as demonstrated by sealer manufacturer based on testing and field experience. B. Colors: Provide color of exposed JOINT SEALERS to comply with the following: 1. Provide selections made by Architect from manufacturer s full range of standard colors for products of type indicated. ACCEPTABLE MANUFACTURERS: A.

9 Use only the specified products of the following manufacturers: 1. DOW - Dow Chemical Co. 2. DCC - Dow Corning Corp. 3. MEAD - W. R. Meadows, Inc. 4. PECO - Pecora Corp. 5. SON - Sonneborn by BASF Building Systems. 6. TREM Tremco, Inc. sealant . 7. GE - GENERAL Electric. SEALERS (EXTERIOR AND INTERIOR): A. S-1: One-component silicone, low-modules, gun grade elastomeric sealer. Use in all joints one inch wide or less wherever movement may occur on interior or exterior, at contraction and expansion joints, masonry to masonry, building construction joints, metal door and window frames to masonry, metal to metal, and metal to masonry. 1. DCC, 790. 2. PECO, 864. 3. TREM, Spectrum 1.

10 4. GE, Silglaze N SCS 2501. B. S-2: One-component urethane, pour grade, self-leveling elastomeric sealer. Use in interior 28033 JOINT SEALERS 07900 -4 contraction and expansion joints in slabs. 1. PECO, Urexpan NR201. 2. SON, Sonalastic SL1. 3. TREM, THC-90l. C. S-3 Tape Sealer, manufacturer s standard, solvent free, butyl based tape sealer with a solids content of 100 percent formulated to be non-staining, paintable and non-migrating in contact with non-porous surfaces with or without reinforcement thread to prevent stretch and packaged on rolls with a release paper on one side. Use where shown on drawings. 1. PECO, Extru-Seal Tape. 2. TREM, 440 Tape. SEALERS (INTERIOR ONLY): A. C-1: One- part acrylic gun grade.