October 7, 2014  |  By  | 

Descriptions and specifications contained herein were in effect at the time this publication was approved for printing. In a co n- tinuing effort to refine and improve products, the manufacturer reserves the right to discontinue products at any time or chang e specifications and/or designs without incurring obligation. To insure you have the latest information available, please inquire. Application details in this manual may not be appropriate for all environmental conditions, building designs, or panel profiles. Projects should be engineered to conform to applicable building codes, regulations, and accepted industry practices. Insulation is not shown in these details for clarity. IMPORTANT NOTICE READ THIS MANUAL COMPLETELY PRIOR TO BEGINNING THE INSTALLATION OF THE KLS 2100 ROOFING SYSTEM. IF THERE IS A CONFLICT BETWEEN PROJECT ERECTION DRAWINGS PROVIDED OR APPROVED BY THE MANUFACTURER AND DETAILS IN THIS MANUAL, PROJECT ERECTION DRAWINGS WILL TAKE PRECEDENCE. Ice Dam Disclaimer Kirby’s standing seam roofs meet the load requirements dictated by governing codes and project specifications, including applicable snow loads. However, Kirby expressly disclaims responsibilty for weathertightness or roof point loading issues or other hazards resulting from ice dam situations. Any time ice and snow can melt on the main body of the roof and refreeze at the eave or in the shadow of an adjacent wall, an ice dam situation may develop. In addition to local climate, ice dam formation is affected by many other factors, including but not limited to, roof insulation R value, roof panel color, interior temperature of building, heater location in building, eave overhangs, parapet walls, shading of building roof areas from adjacent trees, parapets, buildings, etc. These factors are design and maintenance issues and are outside the con- trol of Kirby. Kirby specifically disclaims any liability for damage due to ice dam formation, although the following issues should be taken into consideration concerning standing seam roofs installed in freezing climates: •Always use field seamed panels. These machine-folded seams are more durable when subjected to occasional icing. •Eliminate "cold" eave overhangs and parapet walls from the building design. Roof overhangs outside the heated envelope of the building will tend to be colder than the roof areas over the heated envelope. Simple roof designs are preferred. Parapet walls at the eave allow ice and snow to collect due to shading effects and the lower roof temperatures caused thereby. •Make sure the interior of the building is adequately insulated and the heating is properly distributed. Inadequate insulation in the roof and/or improper heat distribution causes heat flow though the main body of the roof. On days when the temperature is below freezing, this heat gain can cause ice and snow to melt and refreeze at the eave where the roof is colder. •Lay out the building to prevent the eaves and other roof areas from being shaded during the winter. This may mean eliminating adjacent trees or reconsidering roof geometries. •Consider using self-regulating heating cables at the eaves to mitigate the effects of ice dams. •On building designs using attics, over-insulate the attic floor and provide adequate ventilation in the attic. This will reduce heat transfer through the roof resulting in more consistent roof temperatures between eave and field of roof. •Increase the degree of diligence with respect to underlayment materials at roof areas prone to icing. This may include valleys, eaves, dormers and roof areas near dormers, parapets and the like where shading may occur. For more information on this subject, please refer to the MCA's Metal Roof Design For Cold Climates manual. ©Copyright Kirby Building Systems 2007. All Rights Reserved. 07-09 REVISED 6/25/13

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