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1. Install tapered insulation system to provide positive slope for complete roof <br />drainage. <br />2. Crickets shall be sized as shown in the Contract Drawings. Modifications shall be <br />provided to ensure positive slope and prevent standing water along the cricket <br />valley. <br />a. Minimum length to width ratio shall be 2:1. Fabricate partial crickets with <br />dimensions which would result in a minimum length to width ratio of 2:1 <br />if they were extended to full size. <br />b. Unless otherwise noted, fabricate all crickets from tapered stock as <br />required to provide the specified minimum slope. For example, when roof <br />slope is indicated as 1/4" per foot minimum, fabricate crickets with slope <br />of 1/2" per foot minimum. <br />c. Construct crickets on up slope side of all curbs to ensure positive drainage. <br />d. Install tapered edge strips at cricket edges to provide a smooth transition <br />between the cricket and insulation system below. <br />3. Insulation boards may require mechanical fasteners and stress plates at slope <br />transition of crickets to minimize bridging. <br />D. Roof Drainage: <br />1. Drainage sumps shall be installed as detailed. <br />2. The Contractor shall be responsible for carefully laying out the tapered insulation, <br />sumps, drain bowls and scuppers to ensure the finished roof provides complete <br />drainage with no standing water. <br />3. Contractor shall fabricate miter -cut sumps at scuppers to provide smooth <br />transitions between the insulation system and the drains/scuppers. <br />4. Sumps shall ensure complete roof drainage and prevent water dams. <br />5. Contractor shall adjust insulation, drains and scuppers to ensure complete roof <br />drainage and satisfactory substrates for membrane and flashings. <br />6. Drain sump components shall be fastened to the deck using specified insulation <br />fasteners or adhesives. <br />7. Circular sumps and sumps that do not provide smooth transition or that create <br />standing water at the drains shall be rejected and shall require removal and <br />replacement. <br />E. Foam Adhesive Application <br />1. Adhesive beads shall be positioned and spaced at a minimum as indicated in the <br />Contract Drawings. Comply with the requirements of the membrane <br />manufacturer's tested assembly for adhesive spacing and positioning. <br />2. Adhesive beads shall be sized in accordance with the adhesive manufacturer's <br />guidelines. <br />3. Insulation boards shall be placed onto the beads and immediately "walked" and/or <br />"weighted" into place. Insulation boards must be placed into the adhesive in strict <br />accordance with the adhesive manufacturer's guidelines. <br />4. Ensure full adhesion of all layers of insulation and take whatever steps necessary <br />to achieve full adhesion, including but not limited to temporary ballasting of <br />insulation until adhesive sets. <br />END OF SECTION 07 22 16 Revision 1 <br />Indian River County North RO Plant <br />Roof Replacement 07 22 16-6 Revision 1 Roof Insulation <br />