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�� � -.,.0 ����� ����•�y������<��•����� ,.�������.����� ,.��u .,�u�„y �� �•�����.,����..��u ,,�u���y.uwy, ,�.,,��.., � . � �.-,� � �. , wa��� <br />0'x 11 1 21" Ball <br />IWLICATiON INSTRUCTiON$ <br />Roof i0e&: Use only ever a well»seasoned, supported wood deck, tightly <br />constructed with maximinn 6" wide Itunber, having adequate nail -holding <br />capacity. Plywood decking as recommended by the Wneeted Woad <br />Association Is accede. <br />For ridge verd to function property, it must be the only high or exhaust vent <br />for the vented aftic space. Ridge vents will not function properly it used In <br />conjunction with gable -mid louvers, turbines, roof vefft or power vents. <br />Slope Restrictiorm Use only on slopes between 3/12 and 16I12 <br />STEP 1 <br />Calt:alations #or at Balanced Ventilation System <br />To achleve a "balanced sysbrn- with Cots' Ridge Runnet ridge went, there <br />must be an air Intake systaern (i.e., soffit or undereave vents). For paper ventilatim, <br />the amount of undereave v�entliallon rust equal the amount: of ventilates at <br />the ridge. NM: In no case should The amount of exhaust ventilation exceed the <br />amount of intake ventilation. <br />To determine the minimum square feet of not free ventilating am (NFVA) <br />rwetled for a balanced ventilation sum, use the following forma: <br />Sq. rt. of attic floor space = Min, Sq. ft.. of NFVA needed <br />3 <br />COW Ridge RunnW ridge vent has 12.5 square inches of NFVA per lineal foot. <br />To determine how many feet of Cobra" Ridge Runner'ritip vent is needed, <br />use the following formula: <br />112 x (Min. 5q. ft. of NFVA needed) x 144 112.5 = Min. lineal feet of ridge <br />vent needed <br />To determine the amount of undereave vent required, use the following farrnula: <br />X = NFVA (Sq. In. per. tin. ft.) of ft undereave Yen# or Intake vent <br />system selected <br />lt2 x (Min. Sq. R. of NFVA needed) x 144/X = Min. lineal feet of undereave <br />STEP 2 vent needed <br />Instruction Far Slots <br />Attar cakulating the total length of Cobra' Ridge gunner ridge vent needed, <br />determine the necessary slot opening required. <br />Note: if install% on an existing roof; remove The cap shingles irorn tine e. <br />Roots without a ridge board: ad an opening along the ridge, N" on each side of tie <br />ro0i ridge (Figure AI). <br />Roofs with a ridge board,, cut an opening along the ridge, 1Y." on each side of the roof <br />ridge (Figure 0). <br />Note: (Maximum slot opening is 3' " wide, <br />Mark off and cut the slot opening, snaking sure that the ends of the opening stop at <br />least &' from any end walls or hip intersections and 12" from chimneys (Fipre C). <br />Where short ridges (dormers, ridge intersections) ate used, marls and cut the slot <br />making sure that the 04 of the opening stops at least 12" from the ridge intersection <br />(Figure D).. <br />Copyright r, 2000 Windward Homes No portion may be copied or reproduced without the prior written permission of Windward Homes <br />Share drive W: (duality Control. Check]ist/Rooiing (680)/ Roofing Install Shingle Final Group 680 rev 03-16-07 /Page 3 of 4 <br />zM4 <br />m <br />Z <br />0 <br />Windward-j Homes <br />PUN © 2007 WINDWARD HOMES. ALL RIGHTS RESERVED <br />