YESLER TERRACE PHASE I CONSTRUCTION DOCUMENT SET NOVEMBER 01, 2019 03 54 00 CAST UNDERLAYMENT PAGE 1 of 4 SECTION 03 54 00 CAST UNDERLAYMENT PART 1 GENERAL 1.01 SECTION INCLUDES A. Liquid-applied self-leveling floor underlayment. B. Acoustical Isolation Mat. 1.02 REFERENCE STANDARDS A. ASTM C1602/C1602M - Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete; 2012. B. ASTM C472 - Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete; 1999 (Reapproved 2014). C. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2017. 1.03 SYSTEM DESCRIPTION A. 1.04 Liquid applied, gypsum-based self-leveling floor underlayment over wood and acoustical isolation mat. SUBMITTALS A. See Section 01 30 00 - Administrative Requirements, for submittal procedures. B. Product Data: Provide physical characteristics, product limitations, and as follows:mixing instructions 1. Technical data to show compliance with specified requirements. 2. Approval certificate by manufacturer for proposed Subcontractor. C. Manufacturer's Instructions: Indicate mix instructions. D. Certificate: Certify that products meet or exceed specified requirements. E. Manufacturer's Instructions. 1.05 QUALITY ASSURANCE A. 1.06 Applicator Qualifications: Company specializing in performing the work of this section with minimum 3 years of experience and certified by manufacturer. REGULATORY REQUIREMENTS A. Conform to applicable code for combustibility or flame spread requirements. B. Underlayment shall be a component of a fire-resistant rated assembly with a FM, UL or Warnock Hersey label. Project Number - 163272 Prepared by Ankrom Moisan Architects YESLER TERRACE PHASE I CONSTRUCTION DOCUMENT SET NOVEMBER 01, 2019 1.07 03 54 00 CAST UNDERLAYMENT PAGE 2 of 4 DELIVERY, STORAGE, AND HANDLING A. Delivery in manufacturers original, undamaged packages with legible identifying labels intact or in acceptable bulk handling equipment. B. Store off ground and protect from damage. 1.08 FIELD CONDITIONS A. Do not install underlayment until floor penetrations and peripheral work are complete. B. Maintain minimum ambient temperatures of 50 degrees F 24 hours before, during and 72 hours after installation of underlayment. C. During the curing process, ventilate spaces to remove excess moisture. PART 2 PRODUCTS 2.01 MANUFACTURERS A. 2.02 Gypsum Underlayment: 1. Maxxon Corporation; Product Dura-Cap: www.maxxon.com. 2. Hacker Industries, Inc; Product: Firm-Fill 3310+: www.hackerindustries.com. 3. USG; Levelrock Ultraarmor: www.usg.com. 4. Substitutions: See Section 01 60 00 - Product Requirements. MATERIALS A. Cast Underlayments, General: 1. Comply with applicable code for combustibility or flame spread requirements. B. Gypsum-Based Underlayment: Gypsum based mix, that when mixed with water in accordance with manufacturer's directions will produce self-leveling underlayment with the following properties: 1. Compressive Strength: Minimum 3500 psi, tested per ASTM C472. 2. Density: Maximum 115 lb/cu ft. 3. Final Set Time: 1 to 2 hours, minimum. 4. Thickness: 1 1/4 inch. 5. Surface Burning Characteristics: Flame spread/Smoke developed index of 0/0 in accordance with ASTM E84. C. Sand: Washed masonry, mortar or plaster sand, 1/16 inch maximum size. D. Water: ASTM C1602/C1602M; clean, potable, and not detrimental to underlayment mix materials. E. Primer: Manufacturer's recommended type. F. Metal Lath: Galvanize metal lath weight as required by manufacturer. G. Joint and Crack Filler: Latex based filler, as recommended by manufacturer. H. Sealer: As approved by manufacturer. Project Number - 163272 Prepared by Ankrom Moisan Architects YESLER TERRACE PHASE I CONSTRUCTION DOCUMENT SET NOVEMBER 01, 2019 2.03 03 54 00 CAST UNDERLAYMENT PAGE 3 of 4 ACOUSTICAL ISOLATION MAT A. 2.04 See Section 09 80 00 Acoustical Treatment. MIXING A. Site mix materials in accordance with manufacturer's instructions. B. Mix to self-leveling consistency without over-watering. PART 3 EXECUTION 3.01 EXAMINATION A. 3.02 Verify that substrate surfaces are clean, dry, unfrozen, do not contain petroleum byproducts, or other compounds detrimental to underlayment material bond to substrate. 1. If substrate is inadequate in any way to receive self-leveling underlayment to form a complete, sound system, do not proceed and notify Architect immediately in writing. PREPARATION A. Remove substrate surface irregularities. Fill voids and deck joints with filler. Finish smooth. B. Vacuum and clean surfaces loose material, dust, oil, grease, paint water soluble material and other contaminants.. C. Prime substrate in accordance with manufacturer's instructions. Allow to dry. D. Continue expansion joints in substrate through underlayment. E. Install isolation mat underlayment in accordance with manufacturer's instructions. 3.03 APPLICATION A. Start installation upon completion of gypsum board finish on walls and ceilings. B. Work to be scheduled to minimize possible damage during construction process. C. Install underlayment in accordance with manufacturer's instructions. D. Place to indicated thickness, with top surface level to 1/8 inch in 10 ft. 1. Construction Documents. 2. Reviewed Shop Drawings. 3. Requirements of governmental agencies having jurisdiction. E. Primer and Surface Conditioner: 1. Apply 2 coats of primer to substrate and let dry. 2. Apply where underlayment exposed to traffic during construction. F. Mix and place so as to avoid material segregation. G. Anchor components firmly into position plumb, level and true for long life. Project Number - 163272 Prepared by Ankrom Moisan Architects YESLER TERRACE PHASE I CONSTRUCTION DOCUMENT SET NOVEMBER 01, 2019 H. 3.04 03 54 00 CAST UNDERLAYMENT PAGE 4 of 4 Patching: In accordance to Manufacturers written instructions after completion of underlayment installation, make a thorough visual inspection of areas and locate shrinkage cracks and other cracks in floor fill surface. 1. Patch cracks with a compound approved by Manufacturer. 2. Smooth patches to provide a finish surface acceptable for applied finish floor. CURING A. Once underlayment starts to set, prohibit foot traffic until final set has been reached. B. Air cure in accordance with manufacturer's instructions. C. Sealer: 1. Apply where underlayment is to receive glued-down finish surface. 3.05 CLEANING A. Clean, without damaging, exposed surfaces of Work of this Section and repair where damaged. Remove refuse from site. B. Do not impose point loading on underlayment at any location; distribute loads on floor fill to prevent damage to finish surface until floor finishes are applied. 3.06 PROTECTION A. Protect against direct sunlight, heat, and wind; prevent rapid drying to avoid shrinkage and cracking. B. Protect work of others from damage. C. Do not permit traffic over unprotected floor underlayment surfaces. 1. Provide adequate protection until fill has attained sufficient strength to withstand damage from imposed loads. 2. Do not impose point loading on underlayment at any location; distribute loads on floor fill to prevent damage to finish surface until floor finishes are applied. END OF SECTION Project Number - 163272 Prepared by Ankrom Moisan Architects
