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5. SPECIAL INSTALLATION PROCEDURES <br /> SPECIAL INSTALLATION PROCEDURES No. 1 <br /> HELPFUL HINTS/TREATED LUMBER/GALVALUME STEEL <br /> 4 <br /> MEASURING LONG VALLEY PANELS STONE CHIMNEY <br /> When measuring for hip and ridge panel (INTERSECTING ROOF PITCHES) Flashing this type of chimney can be made <br /> cuts, deduct 1112" (12.5mm) from the true This occurs when a valley is the dividing easier by installing a 2"X 6' (50 X150mm) <br /> measurement taken. line between two different roof pitches. lumber frame on edge around the chimney <br /> One side of the valley will have longer perimeter and fill with mortar. Install the 1 <br /> When measuring for chimneys, rakes, angled valley cuts than the other. They X 4 (25 X 100 mm) counterbattens as <br /> skylights etc.. deduct 1/4' (6mm)from the have a tendency to bow when being bent. normal, then butt the 2 X 2 (50 X 50mm) <br /> true measurement taken. Gerard To overcome the bowing of the valley panel panel battens into the 2' X 6" (50 X <br /> recommends to record all measurements and to create a straight valley add 1" 150mm). The Gerard panel is turned up <br /> for cut panels on the roof before marking (25mm)to the top of the long valley cuts. against the 2'X 6" (50 X 150 mm) and <br /> and cutting panels on the ground. This provides a straighter line to work from counterflashing is marked to the stone <br /> for the other side. Use true measurements contours and sealed with mortar or non- <br /> RECORDING MEASUREMENTS for the other side. Always in this situation acidic 1-part urethane sealant. <br /> Gerard recommends that each cut section install the long valley panels first, then <br /> is recorded using the following format. measure the shorter length valley panels to <br /> this. <br /> ROOF AREA MEASURING GENERAL <br /> DIRECTION STEEP PITCH <br /> For steep pitched roofs, be sure to <br /> HIP -► complete everything on the way down,i.e., <br /> Gerard trim installed and sealed. Vent, <br /> chimney, and other flashings should be <br /> TOP BOTTOM fitted, sealed, and painted. This will <br /> 8"(200mm) 22"(559mm) prevent having to go back up when <br /> etc.. etc.. reaching the fascia. <br /> MUM$G E R A B 1 r Page 56 0 Gerard Roofing Technologies,2001-03-01 <br />