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A32. Specify roofing material products. Show roof slope. —IRC Chapter 9 <br />Include drainage. <br />A33. Show 30 # felt interlaid with 18" wide strips of felt shingled between <br />each course in such a manner that felt is not exposed to the weather <br />between courses of shakes. Show roof valley flashing minimum 28 <br />galvanized sheet gauge corrosion -resistant metal extending at least 11 <br />inches from centerline each way. Show ice shield extending from the <br />eaves to a point at least 24 inches inside the exterior wall line. -IRC <br />R905.8.7 <br />A34. Show wood shake exposure per IRC table 905.8. <br />A35. Composition shingles shall not be installed on roofs having a slope less <br />than 4 to 12 unless double underlayment is installed in accordance with <br />IRC Section R905.2.2. <br />A36. Asphalt shingle, clay and concrete tile, metal shingle, mineral -surfaced <br />roll roofing, slate and slate -type shingle, wood shingle, and wood shake <br />roof materials require an ice barrier that extends from the edge of the <br />eaves to a point not less than 24 inches inside the exterior wall line of the <br />building. -IRC R905 <br />A37. Accessible below -floor areas shall be provided with a minimum 18" x <br />24" access opening. IRC R408.4. For access to mechanical equipment <br />in these areas see IRC M1305.1.4. <br />A38. Show cross ventilation for enclosed attics and spaces between rafters <br />for each separate space. Ventilating openings shall be protected against <br />the entrance of rain or snow. The total net free ventilating area shall not be <br />less than 1 to 150 of the area of the space ventilated. This may be <br />reduced to not less than 1 to 300 if: (1) openings are provided in the <br />upper and lower portions of the ventilated space, OR, (2) a 1 perm vapor <br />barrier is installed on the warm side of the ceiling. -IRC R806 <br />A39. Unvented conditioned attic assemblies and unvented roof assemblies <br />shall comply with R806.5. <br />A40. Show a minimum 22" x 30" attic access in a hallway or other readily <br />accessible location. -IRC R807. See M1305.1.3 for access to furnaces <br />and other mech. equipment in attics. <br />A41. Provide listing (approval) number for fireplace stove, fireplace insert, or <br />shower steamer appliance. -IRC M1302.1 <br />Page 9 of 21 <br />