SECTION (07100) - DAMPPROOFING AND WATERPROOFING

Transcription

1 SECTION (07100) - DAMPPROOFING AND WATERPROOFING PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Sheet Membrane Waterproofing 2. Under-Slab-On-Grade Vapor Barrier B. Related Sections: 1.02 REFERENCES 1. Section (03300) - Cast-In-Place Concrete 2. Section (04200) - Unit Masonry 3. Section (07200) Thermal Protection A. ASTM International Publications: 1. D4263 "Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method" 2. D6506 Standard Specification for Asphalt Based Protection for Below Grade Waterproofing 3. E1745 "Standard Specification for Water Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs" 1.03 SYSTEM DESCRIPTION A. General: Provide waterproofing that prevents the passage of liquid water under hydrostatic pressure and complies with requirements as demonstrated by testing performed by an independent testing agency of manufacturer s current sheet membrane SUBMITTALS A. Submit "Letter of Conformance" in accordance with Section (01330) with the following supporting data: 1. Include product data on each type of dampproofing and waterproofing product specified, including data substantiating that materials comply with specified requirements. a. Mark each copy to identify applicable products, characteristics, models, options and other supplemental data to clearly communicate information specific to this project. B. Samples, 3 x 6 inches minimum size, of each fluid-applied and sheet membrane waterproofing material specified for Project QUALITY ASSURANCE A. Installer Qualifications: Engage an experienced Installer who has completed fluid-applied and sheet membrane waterproofing applications similar in material, design, and extent to that indicated for Project and that has resulted in construction with a record of successful inservice performance. 1. Assign work closely associated with waterproofing, including (but not limited to) waterproofing accessories, and flashings used in conjunction with waterproofing, expansion joints in membrane, insulation, and protection course on membrane, to Installer of fluid-applied waterproofing, for single, undivided responsibility. PAGE 1

2 B. Single-Source Responsibility: Obtain primary waterproofing materials of each type required from a single manufacturer. C. Pre-Installation Conference: A pre-installation conference shall be held prior to commencement of field operations to establish procedures to maintain optimum working conditions and to coordinate this work with related and adjacent work. Agenda for meeting shall include review of special details and flashing DELIVERY, STORAGE, AND HANDLING A. Deliver materials to Project site in original packages with seals unbroken, labeled with manufacturer' name, product, date of manufacturer, and directions for storage. B. Store materials in their original undamaged packages in a clean, dry, protected location and within temperature range required by waterproofing manufacturer. Protect stored materials from direct sunlight PROJECT CONDITIONS A. Environmental Conditions: Apply waterproofing within range of ambient and substrate temperatures recommended by waterproofing manufacturer. Do not apply waterproofing to a damp or wet substrate. 1. Do not apply waterproofing in snow, rain, fog, or mist. B. Maintain adequate ventilation during penetration and application of waterproofing materials. PART 2 PRODUCTS 2.01 MATERIALS, GENERAL A. General Compatibility: Provide products that are recommended by manufacturer to be fully compatible with indicated substrates SHEET MEMBRANE WATERPROOFING A. Manufacturers: 1. Bituthene 4000 ; Grace Construction Products ( ) 2. "CCW MiraDRI 860/861"; Carlisle Coatings and Waterproofing Inc. ( ) Waterproofing Membrane ; Polyguard Products Inc. ( ) 2.03 UNDER-SLAB-ON-GRADE VAPOR BARRIER: A. Basis for Design: PERMINATOR 10 mil by W. R. MEADOWS. 1. Membrane shall be manufactured from virgin polyolefin resins and shall meet or exceed all requirements of ASTM E1745, Class A. with maximum performance rating of perm. Provide in lengths and widths required for least number of seams. a. Under Slab: 10 mils thick. 2. Seam Tape - High Density Polyethylene Tape with pressure sensitive adhesive. Minimum width 4 (100 mm). 3. Construct pipe collars from vapor retarder material and pressure sensitive tape permanufacturer s instructions MISCELLANEOUS MATERIALS A. In addition to primary waterproofing materials, provide the following: 1. Primer/Filler/Sealer: As recommended by waterproofing manufacturer. PAGE 2

3 2. Flashings, Cant Strips, and Accessories: As recommended by waterproofing manufacturer. 3. Protection Course: Board as approved by system manufacturer, premolded, 1/8 inch (3 mm) thick, semirigid board consisting of mineral-stabilized asphalt core sandwiched between layers of asphalt-saturated felt, surface-coated with asphalt and sealed to core under heat and pressure, and provided with polyethylene film facings complying with ASTM D6506. PART 3 EXECUTION 3.01 EXAMINATION A. Examine substrates, areas, and conditions under which waterproofing systems will be applied, with Installer present, for compliance with requirements. Do not proceed with installation until unsatisfactory conditions have been corrected. 1. Do not proceed with installation until after minimum concrete curing period recommended by waterproofing manufacturer. 2. Verify substrate is visibly dry and free of moisture. Test for capillary moisture by plastic sheet method according to ASTM D4263. B. Inspect concrete and concrete masonry surfaces for: 1. Contamination: Algae, chalkiness, dirt, dust, efflorescence, form oil, fungus, grease, mildew or other foreign substances. 2. Surface absorption and chalkiness. 3. Cracks: Measure crack width and record location of cracks. 4. Damage and deterioration. 5. Moisture content and moisture damage: a. Use a moisture meter to determine if the surface is dry enough to receive the air and moisture barrier and record any areas of moisture damage or excess moisture. 6. Compliance with specification tolerances: a. Record areas that are out of tolerance (greater than 1/4 inch in 8-0 feet deviation in plane). C. Notify Owner s Representative in writing of anticipated problems using waterproofing over substrate PREPARATION A. Clean substrate of projections and substances detrimental to work; comply with instructions of prime materials manufacturer. B. Install cant strips and similar accessories as shown and as recommended by prime materials manufacturer even though not shown. C. Fill voids, seal joints, and apply bond breakers as recommended by prime materials manufacturer. D. Prime substrate as recommended by prime materials manufacturer INSTALLATION - GENERAL A. Comply with manufacturer's written installation recommendations, including preparation of substrate surfaces, detail coatings of joints and planar changes in substrate, and priming of substrates. PAGE 3

4 B. Mix separately packaged components in accordance with manufacturer's written recommendations INSTALLATION - SHEET MEMBRANE WATERPROOFING A. Apply waterproofing membrane material to substrates and adjoining surfaces indicated to receive membrane. Apply in accordance with manufacturer's recommendations to obtain thicknesses specified and using applicators and techniques best suited for slope and type of substrate to which applied. 1. If two-coat application is required to obtain membrane thickness specified below, apply second coat only after initial coat has cured as recommended by manufacturer. 2. Provide 60 mil (average) membrane thickness, with minimum 50 mil thickness. B. Install sheet membrane waterproofing material to substrates and adjoining surfaces indicated to receive membrane. Install in accordance with manufacturer's recommendations using applicators and techniques best suited for type of substrate to which applied. C. Install sheet-type flashings and joint covers where indicated and as recommended by prime materials manufacturer. Extend flashings onto perpendicular surfaces and other work penetrating substrate to not less than 6 inches beyond finished surface to be applied over waterproofing. D. Permit membrane to cure under conditions that will not contaminate or deteriorate waterproofing material. Block off traffic and protect membrane from physical damage. E. Install protection course on cured membrane (after testing, if required) without delay to minimize period of membrane exposure. 1. On vertical surfaces comply with waterproofing manufacturer's recommendations for adhesion of protection course to membrane. 2. In-Place Testing: Before completed membranes on horizontal surfaces are covered by protection course or other work, test for leaks with 2 inch depth of water maintained for 24 hours. Repair any leaks revealed by examination of substructure, and repeat test until no leakage is observed. F. Provide separation between waterproofing membrane and non-compatible substrates and materials in accordance with manufacturers published instructions INSTALLATION - UNDER-SLAB-ON-GRADE VAPOR RETARDER A. General: Extend vapor and moisture barriers to extremities of areas to be protected from vapor transmission. Extend vapor and moisture barriers to cover miscellaneous voids in insulated substrates, including those which have been stuffed with loose fibertype insulation. B. Install the vapor barrier membrane in accordance with manufacturer s instructions and ASTM E C. Unroll vapor barrier with the longest dimension parallel with the direction of the pour. D. Lap vapor retarder over footings and seal to foundation walls. E. Overlap joints 6 (152 mm) and seal with manufacturer s tape. F. Seal joints caused by pipes, conduits, electrical boxes, and similar items penetrating vapor barrier with vapor-barrier tape of type recommended by vapor barrier manufacturer to create an air-tight seal between penetrating objects and vapor barrier. PAGE 4

5 G. Repair any tears or punctures in vapor and moisture barriers immediately before concealment by other work. Cover with vapor-retarder tape or another layer of vapor retarder. Repair damaged areas by cutting patches of vapor barrier, overlapping damaged area 6 (152 mm) and taping all four sides with tape. H. Refer to Section for installation of Under-slab-on-grade insulation PROTECTING AND CLEANING A. Protect waterproofing from damage and wear during application and remainder of construction period, according to manufacturer s written instructions. B. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. END OF SECTION PAGE 5