Loading...
HomeMy WebLinkAbout07 18 13 PedestrianTraffic Waterproofing MembraneTHE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT SECTION 07 18 13 – PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section includes traffic coatings for the following applications: 1. Pedestrian traffic. B. Related Requirements: 1. Division 06 “Rough Carpentry.” 2. Division 06 “Wood Balconies with Liquid-Applied Deck Coating.” 1.3 PRE-INSTALLATION MEETINGS A. Pre-installation Conference: Conduct conference at Project site. 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include installation instructions and details, material descriptions, dry or wet film thickness requirements, and finish. B. Shop Drawings: For pedestrian traffic coatings. 1. Include details for treating substrate joints and cracks, flashings, deck penetrations, and other termination conditions that are not included in manufacturer's product data. C. Samples for Initial Selection: For each type of exposed finish. D. Samples for Verification: For each type of exposed finish, prepared on rigid backing. 1. Provide stepped Samples on backing to illustrate buildup of traffic coatings. 1.5 INFORMATIONAL SUBMITTALS A. Qualification Data: For Installer. 1. Refer to Specification Section 01 40 00 “Quality Requirements.” B. Product Certificates: For each type of pedestrian traffic coating. C. Field quality-control reports. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT D. Sample Warranty: For manufacturer's warranty. 1.6 CLOSEOUT SUBMITTALS A. Maintenance Data: For pedestrian traffic coatings to include in maintenance manuals. 1.7 QUALITY ASSURANCE A. Installer Qualifications: Refer to Specification Section 01 40 00 “Quality Requirements.” B. Manufacturer’s Qualifications: Refer to Specification Section 01 40 00 “Quality Requirements.” C. Mockups: Build mockups, if requested in writing by Architect, to set quality standards for materials and execution. 1. Build mockup for each pedestrian traffic coating and substrate to receive pedestrian traffic coatings. 2. Size: 9 sq. ft. of each substrate to demonstrate surface preparation, joint and crack treatment, thickness, texture, color, and standard of workmanship. 3. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect specifically approves such deviations in writing. 4. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion. 1.8 PRODUCT DELIVERY, STORAGE AND HANDLING A. Delivery: Deliver materials in the manufacturer’s original sealed and labeled containers and in quantities required to allow continuity of application. B. Storage: Store closed containers in a cool, dry well, ventilated area away from heat, direct sunlight, oxidizing agents, strong acids and strong alkalis. Keep products away from open fire, flame or any ignition source. Store temperature sensitive products at temperatures recommended by the manufacturer. Quartz silica must be kept dry during storage and handling. C. Damaged Material: Any materials that are found to be damaged or stored in any manner other than stated above will be rejected, removed and replaced at the Contractor’s expense. D. Handling: Handle all materials in such a manner as to preclude damage and contamination by moisture or foreign matter. Keep away from open fire, flame or any ignition source. Vapors may form explosive mixtures with air. Avoid skin and eye contact with these materials. Avoid breathing fumes. Do not eat, drink or smoke in application area. Workers shall wear long sleeve shirts, long pants and work boots. Workers shall wear butyl rubber or nitrile gloves when mixing or applying product. Safety glasses with side shields shall be used for eye protection. Use local exhaust ventilation to maintain worker exposure below TLV as listed on MSDS for respective products. If the airborne concentration poses a health hazard, becomes irritating or exceeds recommended limits, use a NIOSH approved respirator in accordance with OSHA Respirator Protection requirements under 29 CFR 1910.134. The specific type of respirator will depend upon the airborne concentration. A filtering face piece or dust mask is not acceptable for use with this product if TLV filtering levels have been exceeded. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT 1.9 FIELD CONDITIONS A. Environmental Limitations: Apply pedestrian traffic coatings within the range of ambient and substrate temperatures recommended in writing by manufacturer. Do not apply pedestrian traffic coatings to damp or wet substrates, when temperatures are below 40 deg F, when relative humidity exceeds 85 percent, or when temperatures are less than 5 deg F above dew point. 1. Do not apply pedestrian traffic coatings in snow, rain, fog, or mist, or when such weather conditions are imminent during the application and curing period. Apply only when frost- free conditions occur throughout the depth of substrate. B. Do not install pedestrian traffic coating until items that penetrate membrane have been installed. 1.10 WARRANTY A. Manufacturer's Warranty: Manufacturer agrees to repair or replace pedestrian traffic coating that fails in materials or workmanship within specified warranty period. 1. Failures include, but are not limited to, the following: a. Adhesive or cohesive failures. b. Abrasion or tearing failures. c. Surface crazing or spalling. d. Intrusion of water, oils, gasoline, grease, salt, deicer chemicals, or acids into deck substrate. 2. Warranty Period: Five years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Source Limitations: 1. Obtain pedestrian traffic coatings from single source from single manufacturer. 2. Obtain primary pedestrian traffic-coating materials, including primers, from pedestrian traffic-coating manufacturer. Obtain accessory materials including aggregates, sheet flashings, joint sealants, and substrate repair materials of types and from sources recommended in writing by primary material manufacturer. 2.2 PERFORMANCE REQUIREMENTS A. Material Compatibility: Provide primers; base coat, intermediate coat, and topcoat; and accessory materials that are compatible with one another and with substrate under conditions of service and application, as demonstrated by manufacturer based on testing and field experience. 2.3 SYSTEM DESCRIPTION A. Liquid-Applied Pedestrian Traffic Waterproofing System: An unreinforced, fluid-applied, PMMA- based waterproofing system having a textured and colored finished surface. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT 2.4 PEDESTRIAN TRAFFIC COATING A. Pedestrian Traffic Coating: Manufacturer's standard, traffic-bearing, seamless, high-solids- content, cold liquid-applied, elastomeric, water-resistant membrane system with integral wearing surface for pedestrian traffic; according to ASTM C 957. 1. Manufacturers: Subject to compliance with requirements, provide one of the product systems listed or provide other product systems acceptable to Architect: a. Siplast; Terapro Pedestrian Traffic Waterproofing System. b. Kemper System; Kemperol AC Speed FR. c. Johns Manville; Seamfree PMMA Liquid Membrane. B. Primer: Liquid primer as recommended in writing for substrate and conditions by traffic-coating manufacturer. C. Preparatory and Base Coats: 1. Thicknesses: Minimum dry- or wet- film thickness as recommended in writing by manufacturer for substrate and service conditions indicated. D. Intermediate Coat: 1. Thicknesses: Minimum dry- or wet- film thickness as recommended in writing by manufacturer for substrate and service conditions indicated, measured excluding aggregate. 2. Aggregate Content: As recommended in writing by traffic-coating manufacturer for substrate and service conditions indicated. E. Topcoat: 1. Thicknesses: Minimum dry- or wet- film thickness as recommended in writing by manufacturer for substrate and service conditions indicated, measured excluding aggregate. 2. Aggregate Content: As recommended in writing by traffic-coating manufacturer for substrate and service conditions indicated. 3. Color: As selected by Architect from manufacturer's full range. F. Aggregate: Manufacturer's standard aggregate for each use indicated of particle sizes, shape, and minimum hardness recommended in writing by traffic-coating manufacturer. G. Fire-Test-Response Characteristics: Provide traffic-coating materials with the fire-test-response characteristics as determined by testing identical products according to test method below for deck type and slopes indicated by an independent testing and inspecting agency that is acceptable to authorities having jurisdiction. 1. Class A according to ASTM E 108. H. VOC Content: 250 g/L or less. I. Low-Emitting Materials: Interior coatings shall comply with the testing and product requirements of the California Department of Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers." 2.5 ACCESSORY MATERIALS A. Joint Sealants: As specified in Section 07 92 00 "Joint Sealants." And ASTM C 920. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT B. Sheet Flashing: Non-staining sheet material recommended in writing by traffic-coating manufacturer. 1. Thickness: Minimum 60 mils. C. Adhesive: Contact adhesive recommended in writing by traffic-coating manufacturer. D. Reinforcing Strip: Fiberglass mesh recommended in writing by traffic-coating manufacturer. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for maximum moisture content, surface smoothness, and other conditions affecting performance of traffic-coating work. B. Verify that substrates are visibly dry and free of moisture. 1. Test for moisture content by method recommended in writing by traffic-coating manufacturer. C. Prepare written report, endorsed by Installer, listing conditions detrimental to performance of traffic-coating work. D. Proceed with installation only after unsatisfactory conditions have been corrected. 1. Begin coating application only after substrate construction and penetrating work have been completed. 2. Begin coating application only after minimum drying period recommended in writing by traffic-coating manufacturer has passed and after substrates are dry. 3. Application of coating indicates acceptance of surfaces and conditions. 3.2 PREPARATION A. Clean and prepare substrates according to ASTM C 1127 and manufacturer's written instructions to produce clean, dust-free, dry substrate for traffic-coating application. Remove projections, fill voids, and seal joints if any, as recommended in writing by traffic-coating manufacturer. B. Priming: Unless manufacturer recommends in writing against priming, prime substrates according to manufacturer's written instructions. 1. Limit priming to areas that will be covered by traffic-coating material on same day. Reprime areas exposed for more time than recommended by manufacturer. C. Schedule preparation work so dust and other contaminants from process do not fall on wet, newly coated surfaces. D. Mask adjoining surfaces not receiving traffic coatings to prevent overspray, spillage, leaking, and migration of coatings. Prevent traffic-coating materials from entering deck substrate penetrations and clogging weep holes and drains. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT E. Plywood Substrate Preparation: 1. Plywood substrates shall be A/C or better, exterior grade sheathing having a minimum thickness of 3/4- inch. Plywood shall be installed with the “A” side up. All plywood edges shall be supported by blocking or primary framing and shall be fastened with counter sunk non-corrosive screws at a minimum of 6 inches on center along the panel edges and a minimum 12 inches on center over intermediate supports. 2. Prime A/C Ex. Plywood surfaces, including vertical surfaces at joints, using specified primer prior to the application of the waterproof membrane. Fill joints per manufacturer’s recommendations and strike joints flush with the plywood surface. Following cure of joint, reinforce joints per manufacturer’s recommendations. 3.3 TERMINATIONS AND PENETRATIONS A. Prepare vertical and horizontal surfaces at terminations and penetrations through pedestrian traffic coatings and at expansion joints, drains, and sleeves according to ASTM C 1127 and manufacturer's written instructions. B. Provide sealant cants at penetrations and at reinforced and non-reinforced, deck-to-wall butt joints. C. Terminate edges of deck-to-deck expansion joints with preparatory base-coat strip. D. Install sheet flashings at deck-to-wall expansion and dynamic joints, and bond to deck and wall substrates according to manufacturer's written recommendations. 3.4 JOINT AND CRACK TREATMENT A. Prepare, treat, rout, and fill joints and cracks in substrates according to ASTM C 1127 and manufacturer's written recommendations. Before coating surfaces, remove dust and dirt from joints and cracks according to ASTM D 4258. 1. Comply with recommendations in ASTM C 1193 for joint-sealant installation. B. Apply reinforcing strip in traffic-coating system where recommended in writing by traffic-coating manufacturer. 3.5 PEDESTRIAN TRAFFIC-COATING APPLICATION A. General: 1. Apply pedestrian traffic coating according to ASTM C 1127 and manufacturer's written instructions. 2. Apply coats of specified compositions for each type of pedestrian traffic coating at locations as indicated on Drawings. 3. Start pedestrian traffic-coating application in presence of manufacturer's technical representative. 4. Verify that wet-film thickness of each coat complies with requirements every 100 sq. ft. B. Mixing and Catalyzing of Resins: Thoroughly mix the entire drum of un-catalyzed resins for 2 minutes if pouring the resin into a second container when batch mixing. Catalyze only the amount THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT of material that can be used within its pot life. Add pre-measured catalyst powder to the resin component and stir for 2 minutes using a slow speed mechanical agitator or mixing stir stick. The amount of catalyst added is based on the weight of the resin used. Refer to the waterproofing system’s manufacturer’s literature for mixing ratios. C. Mixing and Catalyzing of Waterproofing Resin/Aggregate Filler Blends: Thoroughly mix the entire drum of un-catalyzed resin and slowly add the amount of filler specified by the waterproofing system manufacturer. Once the filler has been mixed into the resin component, add pre-measured catalyst powder to the resin/filler mixture and stir for 2 minutes using a slow speed mechanical agitator. The amount of catalyst added is based on the weight of the resin used. Refer to the waterproofing system’s manufacturer’s literature for mixing ratios. D. Priming: Using the appropriate primer, apply to prepared plywood surfaces that will receive the waterproofing or flashing. Apply primers when ambient and substrate temperatures are falling rather than rising to minimize the potential for pinhole formation. Apply the primer using a roller at the rate specified by the primer manufacturer and allow to cure for 45 minutes. Do not let resin pool or pond. Do not over-apply primers as this may interfere with proper primer catalyzation. When calculating application rates, make allowances for saturation of roller covers and application equipment. E. Application of Unreinforced Quartz-Surfaced Waterproofing System over Prepared Substrates: 1. Using cleaner/solvent, primer surfaces to receive the field membrane. Allow the surface to dry for a minimum of 20 minutes before continuing work. 2. Apply a layer of catalyzed waterproofing resin/aggregate filler mixture using a trowel or stub roller at the rate specified by the waterproofing system manufacturer. Use a spiked roller to remove trowel marks and to even the application of the waterproofing resin/aggregate filler mixture. 3. Immediately broadcast natural quartz into the wet waterproofing layer/aggregate filler mixture to refusal. Allow to cure for 2 hours. Sweep excess quartz from the surface. 4. Apply color finish using a roller or squeegee at the rate specified by the resin manufacturer. 5. Allow the system to cure before exposure to foot or wheeled traffic. 6. Make allowances for saturation of roller covers and application equipment when calculating resin application rates. 7. If work is interrupted for more than 12 hours or the surface of a catalyzed resin layer becomes dirty or contaminated from exposure to the elements, thoroughly clean the area with cleaner/solvent. Allow a minimum of 20 minutes for the solvent to evaporate before continuing work. Complete the next application procedure within 60 minutes following the evaporation of the cleaner/solvent. 3.6 FIELD QUALITY CONTROL A. Testing Agency: Engage a qualified testing agency to perform the following field tests and inspections: 1. Materials Testing: a. Samples of material delivered to Project site shall be taken, identified, sealed, and certified in presence of Contractor. b. Testing agency shall perform tests for characteristics specified, using applicable referenced testing procedures. c. Testing agency shall verify thickness of coatings during pedestrian traffic-coating application for each 600 sq. ft. of installed traffic coating or part thereof. THE KENT 07 18 13- THE KENT Issue Date 05.09.18 PEDESTRIAN TRAFFIC WATERPROOFING MEMBRANE THE KENT B. Final Pedestrian Traffic-Coating Inspection: Arrange for pedestrian traffic-coating manufacturer's technical personnel to inspect membrane installation on completion. 1. Notify Architect or Owner 48 hours in advance of date and time of inspection. C. Waterproofing will be considered defective if it does not pass tests and inspections. D. Prepare test and inspection reports. 3.7 PROTECTING AND CLEANING A. Protect pedestrian traffic coatings from damage and wear during remainder of construction period. B. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. C. Notification of Completion: Contractor shall notify manufacturer by using manufacturer’s required notification method. Such notice is required prior to scheduling a final inspection date. D. Final Inspection: Hold a meeting at the completion of the membrane application attended by all parties present at the pre-job conference. A punch list of items required for completion shall be compiled by the /contractor and the manufacturer’s representative. It shall be completed with copies going to the Architect, Construction Manager, Contractor and manufacturer. E. Issuance of Warranties or Guarantees: Contractor shall complete all of post installation procedures and meet manufacturer’s final endorsement requirements for issuance of warranties or guarantees. END OF SECTION 07 18 13