13001323 - Laserfiche WebLink

Home Browse Search

adjoining plane at least 12 inches. Repeat with succeeding courses of that roof plane.Then apply the .1 first course of shingles along the eaves of the intersection roof plane, extending it over the previously applied shingles and trim it 2 inches short of the valley center line. Clip the upper corners of each shingle 1 inch at a 45-degree angle. Succeeding courses are applied in the same manner. 3.7 APPLICATION, DIAGONAL OFFSET PATTERN Specifier Note: PABCO Tahoma® uses a 5-5/8 inches diagonal offset. See the PABCO Tahoma® Application Instructions —Directions for Application for more details at www.oabcoroofing.com. A. Starter Course: Use PABCO®Universal starter or a self-sealing three-tab shingle with the tabs removed and the adhesive at the eave. Cut 6-inches from the end of the first piece of starter course and apply it at the lower left-hand corner of the roof.The starter course overhangs the rake edge and drip edge 1/4-inch to 3/8- inch. Nail in place with 4 nails about 2-inches up from the eave, spaced evenly across the shingle. Continue the Starter across the deck with full shingles. B. First Course: Apply full shingle flush with starter course at lower left-hand corner of roof. C. Second Course: Cut 5-5/8 inches off left end of shingle and apply the 33-3/4 inches long piece over the headlap of the first course shingle, exposing the first course 5-5(8 inches. D. Third Course: Cut 11-1/4 inches from left end of shingle and apply the 28-1/8 inches long piece over the headlap of the second course shingle, exposing the second course 5-5/8 inches. E. Succeeding Courses: Courses four through sever are begun with a partial shingle 5-5/8 inches shorter progressively, establishing the overall diagonal pattern. See the PABCO Tahoma® Application Instructions— Directions For Application for more details at www.pabcoroofing.com. 3.8 APPLICATION, ADDITIONAL CONSIDERATIONS A. Base and Cap (Counter) Flashing: 1. Install metal base flashing for the front of a chimney, skylight, vent or adjoining wall, over the headlap of the last course of shingles below the chimney and extending up the chimney. Set both the roof and chimney overlaps in asphalt roof cement. Where the roof abuts the chimney or vertical wall, the shingles must be flashed with metal flashing shingles applied over the end of each course of shingles.The flashing shingles are 8-inches by 7-5/8 inches, bent to extend 4-inches out over the shingles on the roof deck and 4-inches up the vertical surface. Each flashing shingle is placed so that its bottom edge is just back from the exposed edge of the shingle which will overlap it. It is secured to the deck with one nail near the top corner. The base flashing must be flashed with cap flashing of sheet metal. The cap flashing must extend at least 1-inch into the masonry mortar joints and be caulked with asphalt roof cement to insure a water-tight connection. Base flashing should be cut to cover the entire cricket and extend 6-inches up the brickwork on the chimney. See ARMA Residential Asphalt Roofing Manual for additional details. B. Hips and Ridges: 1. Trim shingles to be even with the ridge and cap with PABCO®Shadow Cap shingles exposed 5-5/8 inches to the weather. Nail 6-5/8 inches back from the exposed edge and 1-inch up from the bottom edge with galvanized roofing nails long enough to penetrate deck 3/4-inch. Applying PABCO®Shadow Cap as a double layer piece is recommended to accent the hip and ridge lines. 2. In cold weather (40°F or below)store shingles for hip& ridge in heated location 24 hours prior to application. DISCLAIMER: PABCO®Roofing Products Guide Specifications have been written as an aid to the professionally qualified specifier and design professional. The use of this information requires the professional judgment and expertise of the qualified specifier and design professional to adapt the information to the specific needs of the building Owner and the project;to coordinate with the design professional's construction document process,and to meet the applicable building codes, regulations and laws. PABCO® Roofing Products disclaims any warranty, expressed or implied, including the warranty of fitness for a particular purpose of the product for a project. END OF SECTION 07 31 13 Project Name/Project Number/insert Date Revised 11/17/20-Page 6 ASPHALT SHINGLES PABCO®Roofing Products