(A) Roof coverings shall be installed in accordance with manufacturers specifications.
(B) Shingles shall not be installed on roofs having less than four in 12 pitch.
(C) Not more than two separate applications of shingles shall be applied to a roof.
(D) Galvanized metal flashing when used, shall be not less than 26-gauge material.
(E) (1) An underlayment of 15 pound felt shall be applied under all asphalt shingles.
(2) Additional layers of underlayment shall be applied if required in the manufacturers specifications.
(F) Built-up roofing.
(1) Mineral aggregate surfaced built-up roofing shall consist of three layers of 15 pound fiber felt installed on roofs having slopes not greater than three in 12.
(2) Built-up roofing shall be applied only to solid surface roofs.
(3) Base sheets shall be cemented to a suitable deck using not less than 25 pounds of hot asphalt or not less than two gallons of cold bituminous compound in accordance with manufacturers published specifications or 30 pounds of hot coal tar pitch per roofing square, or nailed to roof sheathing using not less than one nail to each one and one-third square feet, or may be spot-cemented to a non-nailable deck using not less than ten pounds of hot asphalt per roofing square.
(4) Successive layers shall be cemented to the base sheets using no less cementing material than that specified for solidly cemented base sheets.
(5) Mineral aggregate surfaced roofs shall be surfaced with not less than 50 pounds of hot asphalt or other cementing material in which is embedded not less than 300 pounds of gravel or other approved surfacing materials or 250 pounds of crushed slag per roofing square.
(6) Cap sheets shall be cemented to the base sheets using no less cementing material than that specified for solidly cemented base sheets.
(7) Hot asphalt shall be applied at a temperature of not less than 375°F nor more than 450°F for high melt types. Low melt types shall not be applied at a temperature of less than 350°F nor more than 400°F.
(8) Coal tar pitch shall not be heated to a temperature above 375°F.
(Prior Code, § 9-126) (Ord. 94-11B, passed 4-21-1994)