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aV � INDIANRIVER COUNTY BUILDING DEPARTMENT aZ ROOF SUMMARY- For multiple roof sections/systems complete all applicable sections. UNDERLAYMENT: For slopes 2:12 to less than 4:12 1ST -PLY PRODUCT: ❑ SELF -ADHERING ❑ MECHANICAL ATTACHMENT 2nd -PLY PRODUCT: ❑ SELF -ADHERING ❑ MECHANICAL ATTACHMENT Note: Select a System (1-3) below by checking the box to the left of the diagrams. Fol 1-01 Anndar hq n dd m W shank n.it "h meld w ples0a taps Cap dormw as less thm 1 Mh KA shOM d o -d -not less tlw O,= Inch. M.l.l mP Wdaass not leas eum 32'O.Oe eget metal w01n kWh lw powerKkleen lulen.rs. Pkdc e P outside ad0e Ih"M" nal less than OMS lcdh. System # 1- Apply a Self -Adhering Polymer - Modified Bitumen underlayment complying with ASTM D1970 applied over entire roof deck. System #2- Apply two layers of felt underlayment complying with ASTM D226 Type II or ASTM D4869 Type III or IV or two layers of a synthetic underlayment meeting the performance requirements specified, lapped and fastened as specified. Apply a 19 -inch strip of underlayment felt parallel to and starting at the eaves. Starting at the eave, apply a 36 -inch wide sheet of underlayment, overlapping successive sheets 19 inches; end laps shall be 6 inches and offset by 6 feet. Where felt underlayment is used it must be 30# or equivalent. For slopes 4:12 or greater the above options are available or applicant can use the below option. Please note that the option below is NOT ALLOWED for slopes less than 4:12. Y Fasciate Matal drip edge Annular ring or deformed shank naft vMh metal or plastic caps. Cap diameter not less than t inch. Nail shank diameter not less than 0.083 Inch. Metal cap thickness not less than 32 -gage sheat metal or 0.01 inch for power -driven fasteners. Plastic cap outside edge thickness not less than 0.035 Inch. System # 3- Apply a minimum 4 -inch wide strip of self -adhering polymer -modified bitumen complying with ASTM D1970 or a minimum 3 3/s. -inch wide strip of self -adhering flexible flashing tape complying with AAMA 711, applied over all joints in roof decking. Underlayment shall be applied shingle fashion, parallel to and starting from the eave and lapped 4 inches, end laps shall be 6 inches and shall be offset by 6 feet. The underlayment shall be attached to a nailable deck with two staggered rows in the field of the sheet with a maximum fastener spacing of 12 inches o.c. and one row at the end and side laps fastened 6 inches o.c. Where felt underlayment is used it must be 30# or equivalent. Illustrations: FEMA Hurricane Michael in Florida Recovery Advisory Page 2 of 9