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ROOFING REPLACEMENT, RECOVER AND REPAIR PROJECT PAGE 8 <br />INDIAN RIVER COUNTY- JAIL COMPLEX SECTION 075610 <br />JANUARY 4; 2018 FLUID APPLIED WATERPROOFING — <br />OVER MEMBRANE ROOFING <br />C. At a minimum, clean and prepare surfaces to receive waterproofing by removing all dirt, dust, <br />loose and flaking particles, grease and debris with the use of a stiff bristle push broom. Apply <br />United Cleaning Concentrate and rinse per manufacturer's instructions. Care should be taken <br />not to inject water into the substrate during the preparation phase. Allow adequate time for <br />complete drying after the cleaning process. <br />D. Substrates with heavy contamination of grease, oils, dirt, etc. may require supplemental <br />cleaning methods. Contact a GAF Technical Services or Technical Sales Representative for <br />additional information. <br />E. At a minimum, seal cracks and joints with Butter Grade and PremiumCoat Fabric. Repair <br />additional substrate conditions per approved GAF details. Contact a GAF Technical Services <br />or Technical Sales Representative for additional information. <br />F. Refer to GAF Substrate Preparation Guide for Liquid Applied Roofing Systems for detailed <br />substrate preparation procedures by individual substrate. <br />G. Do not apply' waterproofing to surfaces unacceptable to manufacturer, or under inclement <br />environmental conditions. <br />3.3 APPLICATION <br />A. Preparation and Priming by Substrate: <br />1. Asphaltic Membranes (Smooth BUR / APP / SBS) <br />a. Verify Adhesion per Section 3.1.C. and prepare substrate per Section 3.2 of this <br />Specification. <br />b. Prime new asphaltic surfaces with UniBase Primer at a rate of .5 -1.0 gallon per square <br />(2-4.1 U10 m2) using a roof brush, roller, or airless sprayer. Coverage rate will vary by <br />substrate porosity. For aged asphaltic surfaces, Unibase Primer is recommended to <br />promote adhesion and enhance bleed -blocking. <br />B. PremiumCoat® FoundationCoat & Fabric Components — This procedure consists of one coat <br />of PremiumCoat® FoundationCoat ("FoundationCoat") applied to the substrate at the rate of <br />1.25 to 2.0 gallons / square. HydroStop PremiumCoatO Fabric ("Fabric") (sizes vary) laid into <br />the wet FoundationCoat, and a second coat of FoundationCoat immediately applied over the <br />top at the rate of of 1.25 to 2.0 gallons / square (5.1-8.2 U10 m2) to saturate the Fabric. <br />FoundationCoat is applied at a total rate of 2.5 to 4.0 gallons / square (10.2 — 16.3 U10 m2), <br />depending on the texture and porosity of the substrate. FoundationCoat should only be applied <br />using approved roof brushes. Rolling and/or 'spraying FoundationCoat is strictly prohibited. <br />Total Dry Film Thickness of FoundationCoat & Fabric Components is a minimum 27 mils. <br />1. Roof Perimeter- Using 12" (305 mm) Fabric and FoundationCoat components (described <br />above), waterproof entire roof perimeter. Continue waterproofing up vertical surfaces and <br />onto.the deck a minimum of 6" (151 mm) in each direction. <br />2. Roof Penetrations- Using 12" (305 mm) Fabric and FoundationCoat components (described <br />above), seal any items projecting through waterproofing material to render them watertight. <br />Extend waterproofing vertically up penetrations a minimum of 6" (151 mm). <br />3. Roof Field — Using 40" (1016 mm) Fabric and FoundationCoat components (as described <br />above), reinforce the entire roof field. Overlap adjacent runs of Fabric a minimum of 4" (102 <br />mm). <br />