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WATER VAPOR REDUCTION SYSTEM Section 07260 15-1207 PART 3 - EXECUTION 3.01 INSPECTION A. Prior to all work of this Section, carefully inspect the installed work of other trades and verify that all work is complete to the point where this installation may properly commence. All leveling, grinding and filling must be completed prior to start of treatment. Inspect all surfaces with regard to their suitability to receive water vapor reduction system with Manufacturer's Representative. B. Concrete Slab -on -grade and Concrete Above -grade Sub -floor Testing: The following tests shall be arranged for and paid for by the Water Vapor Reduction System installer prior to start of installation to confirm the substrate is ready to receive the specified material. The name of the proposed testing lab, the lab's qualifications, proposed testing procedures and proposed schedule must be submitted to the Architect and Project Inspector at least two weeks prior to scheduled tests. The Architect reserves the right to reject the testing lab due to lack of experience or qualifications. Following testing, the test results must be submitted to the Architect who will then forward these test results to the Water Vapor Reduction System manufacturer for their review and approval. Installation of specified material within these areas required to be tested may not begin without such review and approval: 1. Moisture and pH Test: Perform anhydrous calcium chloride test per ASTM F 1869 to determine vapor emission rate. Perform a pH test per ASTM F 710. Properly document and submit all results and procedures including environmental conditions (ambient air temperature and humidity, before and during testing) to the Architect a minimum of 10 days prior to scheduled installation date of floor covering. 2. Only conduct calcium chloride tests at the same temperature and humidity expected during occupation of the building. If this is not possible, then the test conditions should be 75°F +/-10°F and 50+/-10% relative humidity. Maintain these conditions 48 hours prior to and during tests. Water vapor transmission levels are directly affected by ambient room temperature and readings conducted without a sustained ambient temperature are NOT acceptable. 3. The Contractor or installer is not allowed to conduct these tests herself/himself. The Contractor shall hire a qualified, independent, third party testing lab or may use the following independent, pre -approved testing lab: Independent Floor Testing & Inspection, Inc. (IFTI) 2440 Stanwell Drive Concord, CA 94520 Attn: Lee Eliseian (800)490-3657 ifti@floortest.com 3.02 PREPARATION A. Mask and protect walls, doors finishes and equipment from installation process. B. Clean all surfaces to receive water vapor reduction system. Shot blast all floors to a CPS #3 or #4 and clean surfaces with Shop Vac to remove all residue off the substrate. Grinding allowed only in areas not accessable by shotblasting. Remove ALL defective materials, and foreign matter such as dust, adhesives, leveling compounds, paint, dirt, floor hardeners, bond breakers, oil, grease, curing agents, form release agents, efflorescence, laitance, Shot 4