SECTION 071326 - SELF-ADHERING SHEET WATERPROOFING PART 1 - GENERAL 1.1 SUMMARY A. This Section includes the following: 1. Modified bituminous sheet waterproofing. 2. Molded-sheet drainage panels. 1.2 SUBMITTALS A. Product Data: Include manufacturer's written instructions for evaluating, preparing, and treating substrate, technical data, and tested physical and performance properties of waterproofing. B. Submittals: 1. Provide VOC statement for each product provided. C. Shop Drawings: Show locations and extent of waterproofing. Include details for substrate joints and cracks, sheet flashings, penetrations, inside and outside corners, tie-ins with adjoining waterproofing, and other termination conditions. D. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified testing agency, for waterproofing. E. Special warranties. 1.3 QUALITY ASSURANCE A. Installer Qualifications: A firm that is approved or licensed by waterproofing manufacturer for installation of waterproofing required for this Project. B. Preinstallation Conference: Conduct conference at Project site. 1. Review waterproofing requirements including surface preparation, substrate condition and pretreatment, minimum curing period, forecasted weather conditions, special details and sheet flashings, installation procedures, testing and inspection procedures, and protection and repairs. C. Manufacturer s Representative: Arrange to have trained representative of the manufacturer on site periodically to review installation procedures. D. Materials: For each type of material required to complete the work of this section, provide primary materials which are the products of a single manufacturer. E. Source Quality Control: Obtain membrane and system accessories from one manufacturer or products approved for waterproofing system by membrane manufacturer. 1.4 DELIVERY, STORAGE, HANDLING A. Materials should be delivered to site in manufacturer s original, unopened containers with original labels attached and bearing the following information: 1. Name of material. 2. Manufacturer s batch codes including date of manufacture. 3. Materials Safety Data Sheets. SELF-ADHERING SHEET WATERPROOFING 071326-1
B. Membrane and accessories should be unloaded and stored carefully. Cartons and containers must be protected from weather, sparks, flames, excessive heat, cold and lack of ventilation. Do not stack membrane higher than 5 feet vertically, nor double stack cartons. Cartons should be stored on pallets and covered to protect from water damage. Any damaged material must be removed from the site and disposed of in accordance with applicable regulations. 1.5 PROJECT CONDITIONS A. Environmental Limitations: Apply waterproofing within the range of ambient and substrate temperatures recommended by waterproofing manufacturer. Do not apply waterproofing to a damp or wet substrate. 1. Work should be performed only when existing and forecasted weather conditions are within the limits established by the membrane manufacturer. Do not apply membrane if the temperature is below - 25ºF or to a damp, frost covered or otherwise contaminated surface. B. Proceed with installation only when substrate construction and preparation work is complete. Surfaces to receive waterproofing materials must be free of voids, spalls, loose aggregate and sharp protrusions. The concrete surface must resemble a troweled finish. Broom finish concrete is not acceptable. C. Warn personnel against breathing of vapors and contact with skin and eyes; wear appropriate protective clothing and respiratory equipment. D. Keep flammable products away from spark or flame. Post No Smoking signs. Do not allow spark producing equipment to be used during application and until all vapors have dissipated. E. Maintain work area in a neat and workmanlike condition. Remove empty cartons and rubbish from the site daily. 1.6 WARRANTY A. Special Manufacturer's Warranty: Manufacturer's standard form in which manufacturer agrees to replace waterproofing material that does not comply with requirements or that fails to remain watertight within specified warranty period. 1. Warranty Period: Five years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 MODIFIED BITUMINOUS SHEET WATERPROOFING A. Modified Bituminous Sheet: Not less than 60-mil- thick, self-adhering sheet consisting of 56 mils of rubberized asphalt laminated to a 4-mil- thick, polyethylene film with release liner on adhesive side and formulated for application with primer or surface conditioner that complies with VOC limits of authorities having jurisdiction. 1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the following: a. American Hydrotech, Inc.; VM 75. b. Carlisle Coatings & Waterproofing Inc.; CCW MiraDRI 860/861. c. CETCO Building Materials Group; Envirosheet. d. Grace, W. R. & Co.; Bituthene 3000. e. Meadows, W. R., Inc.; SealTight Mel-Rol. f. Pecora Corporation; Duramem 700-SM. g. Polyguard Products; Polyguard 650 (Basis of Design) h. Tamko Roofing Products, Inc.; TW-60. SELF-ADHERING SHEET WATERPROOFING 071326-2
2. Physical Properties: a. Tensile Strength: 325 psi minimum; ASTM D 412, Die C, modified. b. Ultimate Elongation: 600 percent minimum; ASTM D 412, Die C, modified. c. Low-Temperature Flexibility: Pass at minus 20 deg F; ASTM D 1970. d. Crack Cycling: Unaffected after 100 cycles of 1/8-inch movement; ASTM C 836. e. Puncture Resistance: 40 lbf minimum; ASTM E 154. f. Hydrostatic-Head Resistance: 231 feet minimum; ASTM D 5385. g. Water Absorption: 0.1 percent weight-gain maximum after 48-hour immersion at 70 deg F; ASTM D 570. h. Vapor Permeance: 0.05 perms; ASTM E 96, Water Method. 2.2 AUXILIARY MATERIALS A. General: Furnish auxiliary materials recommended by waterproofing manufacturer for intended use and compatible with sheet waterproofing. 1. Furnish liquid-type auxiliary materials that comply with VOC limits of authorities having jurisdiction. B. Primer: Liquid primer recommended for substrate by manufacturer of sheet waterproofing material. C. Surface Conditioner: Liquid, waterborne surface conditioner recommended for substrate by manufacturer of sheet waterproofing material. 1. Polyguard 650 LT Liquid Adhesive or Polyguard ShurTac Water Based Liquid Adhesive. D. Liquid Membrane: Elastomeric, two-component liquid, cold fluid applied, trowel grade or low viscosity. 1. Polyguard LM-95 E. Substrate Patching Membrane: Low-viscosity, two-component, asphalt-modified coating. F. Sheet Strips: Self-adhering, rubberized-asphalt sheet strips of same material and thickness as sheet waterproofing. G. Mastic, Adhesives, and Tape: Liquid mastic and adhesives, and adhesive tapes recommended by waterproofing manufacturer. 1. Polyguard 650 Mastic H. Metal Termination Bars: Aluminum bars, approximately 1 by 1/8 inch thick, predrilled at 9-inch centers. 1. Polyguard Termination Bar I. Protection Course: Molded-polystyrene board insulation, ASTM C 578, Type I, 0.90-lb/cu. ft. minimum density, 1-inch minimum thickness. 1. Vertical Applications: Polyguard Drainage Composites Flow 15 2. Horizontal Application: Polyguard Drainage Composites Flow 18-H. 2.3 MOLDED-SHEET DRAINAGE PANELS A. Woven-Geotextile-Faced, Molded-Sheet Drainage Panel: Manufactured composite subsurface drainage panels consisting of a woven-geotextile facing with an apparent opening size not exceeding No. 40 sieve laminated to one side with or without a polymeric film bonded to the other side of a studded, nonbiodegradable, molded-plastic-sheet drainage core, with a horizontal flow rate not less than 2.8 gpm per ft.. SELF-ADHERING SHEET WATERPROOFING 071326-3
PART 3 - EXECUTION 3.1 INSPECTION A. Before starting any waterproofing work, the applicator shall thoroughly inspect all surfaces for any conditions detrimental to the proper completion of the work. Should any deficiencies exist, the General Contractor should be made aware of such in writing immediately. Do not proceed with application until all unsatisfactory conditions are corrected. 3.2 SURFACE PREPARATION A. General: 1. Clean, prepare, and treat substrates according to manufacturer's written instructions. Provide clean, dust-free, and dry substrates for waterproofing application. 2. Mask off adjoining surfaces not receiving waterproofing to prevent spillage and overspray affecting other construction. 3. Remove grease, oil, bitumen, form-release agents, paints, curing compounds, and other penetrating contaminants or film-forming coatings from concrete. 4. Remove fins, ridges, mortar, and other projections and fill honeycomb, aggregate pockets, holes, and other voids. 5. Prepare, fill, prime, and treat joints and cracks in substrates. Remove dust and dirt from joints and cracks according to ASTM D 4258. 6. Bridge and cover isolation joints discontinuous deck-to-wall and deck-to-deck joints with overlapping sheet strips. a. Invert and loosely lay first sheet strip over center of joint. Firmly adhere second sheet strip to first and overlap to substrate. 7. Corners: Prepare, prime, and treat inside and outside corners according to ASTM D 6135. 8. Prepare, treat, and seal vertical and horizontal surfaces at terminations and penetrations through waterproofing and at drains and protrusions according to ASTM D 6135. B. Cast-in Place Concrete: 1. Normal weight structural concrete must be allowed to cure a minimum of 7 days. For lightweight structural concrete, the minimum cure time is 14 days. All concrete surfaces must be dry to the touch before proceeding with the installation of the waterproofing system. 2. Concrete should be sloped to provide proper drainage. 3. Fill all form tie holes. Finish flush with the surrounding surface. 4. Fill and repair bug holes in concrete. Finish flush with the surrounding surface. 5. All cracks over 1/16 inch in width and any moving cracks under 1/16 inch shall be routed out to a minimum of 1/4 inch width and sealed using a high performance polyurethane sealant. Allow adequate curing time per the manufacturer s directions. Once cured, install an 8 inch wide strip of membrane over the crack. 6. Bi-level drains should be installed and have a minimum 3 inch flange. Drains should be installed with the flange flush and level with the surrounding concrete surface. C. Masonry Surfaces: Apply waterproofing membrane over brick or CMU that has been parged using a cementitious parge coat to level surface and reduce porosity. 3.3 APPLICATION A. Install modified bituminous sheets according to waterproofing manufacturer's written instructions and according to recommendations in ASTM D 6135. SELF-ADHERING SHEET WATERPROOFING 071326-4
B. Apply primer to substrates at required rate and allow to dry. Limit priming to areas that will be covered by sheet waterproofing in same day. Reprime areas exposed for more than 24 hours. C. Vertical Surfaces 1. All inside and outside corners shall be treated either with 12 inch wide membrane strip or by applying a 90 mil thick application of liquid membrane. The 12 inch wide membrane should be centered over outside corners. 2. Install a 3/4 inch, 45 degree angle cant of liquid membrane at all changes in plane including inside corners. 3. Waterproofing membrane should be applied vertically in sections of 8 feet in length or less. On walls higher than 8 feet, apply two or more sections with the upper section overlapping the lower. 4. Side laps should be a minimum of 2 ½ inches and end laps should be a minimum of 6 inches. 5. Use a hard roller to firmly press in the material as it is placed on the vertical surface. 6. All terminations of the membrane should receive a bead of mastic. The bead should be troweled to a flat surface approximately 1/8 inch thick by 3/4 inches wide. The mastic should be worked into cut edge terminations. 7. Inadequately lapped seams and damaged areas should be patched with small sections of membrane. The patch should extend a least 6 inches in each direction beyond the defect. 8. Fishmouths and severe wrinkles should be slit, flaps overlapped and repaired as above. 9. Termination bar at top termination of field sheet. D. Horizontal Surfaces: 1. All inside and outside corners shall be treated either with 12 inch strips of membrane or a 12 inch wide by 90 mil thick application of liquid membrane. The field membrane should be centered over the corner. All inside corners shall have a minimum 3/4 inch fillet of liquid membrane or latex modified cement mortar. 2. Waterproofing membrane should be applied to the primed surface starting at the low point and working to the high point in a shingling technique. 3. Side laps should be a minimum of 2 ½ inches and end laps a minimum of 6 inches. 4. The entire membrane should be firmly rolled with a linoleum roller weighing approximately 75 pounds. This will insure excellent adhesion and minimize air pockets between the substrate and membrane. 5. At penetrations, posts or projections, seal to the penetration with liquid membrane then apply a second flashing sheet over the penetration extending a minimum of 6 inches from the detail. The cut edges of all terminations must be sealed with mastic 6. At drains, apply liquid membrane around the inside edge of the drain out at least 6 inches then overlap with sheet membrane a minimum of 6 inches. All permanently exposed cut edge terminations must be sealed with mastic. 7. Membrane turned up on walls shall be terminated into a reglet or under a counter flashing. The membrane may also be rolled firmly to the wall and sealed with a troweled bead of mastic. 8. Inadequately lapped seams and damaged areas should be patched with small section of membrane. The patch area should extend a least 6 inches beyond the defect. 9. Fishmouths and severe wrinkles should be slit, flaps overlapped and repaired as above. 10. Upon completion of horizontal membrane application, flood test the surface with 2 inches of water for 24 hours. Check with the structural engineer to make sure the deck structure will withstand the weight of the flood test. 11. Mark any leak areas found during flood test and make repairs. E. Correct deficiencies in or remove sheet waterproofing that does not comply with requirements; repair substrates, reapply waterproofing, and repair sheet flashings. SELF-ADHERING SHEET WATERPROOFING 071326-5
3.4 MOLDED-SHEET DRAINAGE PANEL INSTALLATION A. Place and secure molded-sheet drainage panels, with geotextile facing away from wall or deck substrate, according to manufacturer's written instructions. Use adhesives that do not penetrate waterproofing. Lap edges and ends of geotextile to maintain continuity. Protect installed molded-sheet drainage panels during subsequent construction. 1. For vertical applications, install protection course before installing drainage panels. 3.5 PROTECTION AND CLEANING A. Protect waterproofing from damage and wear during remainder of construction period. B. Protect installed board insulation from damage due to UV light, harmful weather exposures, physical abuse, and other causes. Provide temporary coverings where insulation will be subject to abuse and cannot be concealed and protected by permanent construction immediately after installation. C. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. END OF SECTION 071326 SELF-ADHERING SHEET WATERPROOFING 071326-6