STANDING SEAM System Technology for Roofing DESIGN AND APPLICATION STANDING SEAM, DESIGN AND APPLICATION Residence in Capetown, South Africa Mormon Temple, Tucson, AZ Geschäftshaus Wensler, New Church, Germany Standing Seam Roof System 1. This system may be fabricated from the 5. For cost effectiveness, ease of fab- 9. To determine whether a ventilation mat following PRODUCT LINES: rication and installation, limit panel and/or factory applied ProRoofi ng lengths to 40’, although the maximum backside coating is required for allowable length of 52’ is possible. RHEINZINK standing seam roofi ng CLASSIC Consult the RHEINZINK technical panels, please refer to the RHEINZINK department for applications requiring Steep Slope, Mid Slope and Low Slope longer lengths. Roofi ng recommendations. PRISMO 6. It is recommended to single lock the 10. All roof installations require Air-Z or panels every 3’-4’ prior to seaming to Enkamat (7008 or 7010). 2. Easy to fabricate and install. assure proper seam closure. 11. Roof penetrations such as skylights, 3. Panel widths from 12” to 24”. 7. Refer to the RHEINZINK baseline chimneys or vents that interrupt the details for detail options for eaves, seams constitute the most vulnerable 4. For optimum fl atness: rakes, hips, ridges, valleys and pen- part of any standing seam roof. These Use 0.8 mm thick RHEINZINK for etrations. Consult the RHEINZINK areas must be carefully detailed fully panel widths 17” to 24”. technical department for customized with apron fl ashings with suffi cient Use 0.7 mm thick RHEINZINK for applications. overlap lengths, capillary breaks, and panel heights 12” to 17”. waterchecks. Consult a RHEINZINK For panel widths above 18” addi- 8. Panels can be roll formed or fabrica- representative for advice on proper tional profiling is recommended. tion fabricated using brake forming or details for these conditions. folding machines. Photo on page prior: Private Residence, Moskauer Gebiet, Russia VOLUME 8.1 ROOF SLOPE CALCUILATIONS Pitch Angle Roof Pitch in Percentage Roof Pitch in Degrees 1 : 12 3.75° 8.33% 4.76° 2 : 12 7.50° 16.67% 9.46° 3 : 12 11.25° 25.00% 14.04° 4 : 12 15.00° 33.33% 18.43° 5 : 12 18.75° 41.67% 22.62° 6 : 12 22.50° 50.00% 26.57° 7 : 12 26.25° 58.33% 30.26° 8 : 12 30.00° 66.67% 33.69° 9 : 12 33.50° 75.00% 36.87° 10 : 12 37.50° 83.33% 39.81° 11 : 12 41.25° 91.67% 42.51° 12 : 12 45.00° 100.00% 45.00° 1:12 2:12 3:12 4:12 5:12 6:12 7:12 8:12 9:12 10:12 11:12 12:12 VOLUME 8.1 LOW SLOPE STANDING SEAM ROOFING WITH RHEINZINK Roofing Application: Low Slope: (<3 in 12) Double Lock Air Z or Enkamat 7008 or 7010 and Proroofi ng + Standing Seam: 0-10” This application is Angle Lock not recommended Standing Seam: by RHEINZINK. 1. A roof with a pitch of 3 in12 or less is a 4. Low slope standing seam roofs with 9. Attachment clips and their associ- low slope roof. Barrel vaulted or curved slopes less than 3 in 12 should not have ated fasteners for low slope standing roofs usually have low slope conditions any cross seams. Panels must therefore seam roofs should be made of stain- on at least a portion of the roof. run the full length of the roof plane or less steel. arc. Panels that are longer than 40’ 2. Low slope roofs require a high tempera- will most likely have to be roll formed 10. Roof penetrations such as skylights, ture, peel and stick, self adhesive mem- at the site. chimneys, or vents that interrupt the brane as the underlayment. Breathable seams constitute the most vulnerable membranes are not appropriate under- 5. Low slope roofs require the added part of any standing seam roof. These layments for low slope standing seam weather resistance of a double locked areas must be detailed carefully with roof conditions. In cold climates where seam. Single lock seams are not appro- apron fl ashings with suffi cient overlap roof assembly ventilation may be desir- priate for low slope roofs. Valleys should lengths, capillary breaks, and water able, consideration should be given to have a water check and an additional checks. Consult your RHEINZINK rep- the fact that a peel and stick membrane soldered cleat 10“ from the water check resentative for advice on proper details is a non breathable vapor barrier and for engagement of the roof panels or for these conditions. therefore does not promote drying of other lengths of valley. condensation in the roof assembly 11. Terminate eave ends of panels by leav- through the roof surface itself. 6. In areas of high snow fall, the seam ing the underside of the eave hook hori- height should be 1-1/2“ tall (instead zontal to facilitate drainage of leakage 3. Low slope standing seam roofs must of the standard 1“) height for additional or condensation. have continuous positive drainage at a weather resistance. minimum pitch of 5/8“ in 12. However, 12. All roof installations require Air-Z or the steeper the pitch, the less chance of 7. The standing seams should be sealed Enkamat (7008 or 7010). a leak especially in areas with extended continuously with either butyl sealant snow cover. Also, valleys must have a or closed cell urethane foam placed minimum pitch of 5/8“ in 12. Beware! on the top of the male leg. The use of The resulting valley pitch of two inter- urethane foam requires an adjustment, secting 5/8“ in 12 pitched roofs that prior to fabricating, to the female leg of are oriented perpendicularly to each the seam to compensate for the thick- other is less than ½“ in 12. Low slope ness of the foam. roofs with long lengths should gener- ally be pitched greater than 5/8“ in 12 8. Low slope roofs with pitches of less than because over a larger roof plane there 3 in 12 require the added protection of is a greater chance that the supporting both backside coating (ProRoofi ng) and substrate will have swales that create a drainage mat - RHEINZINK Air-Z or puddles. Enkamat (7008 or 7010) by Bonar. VOLUME 8.1 MID SLOPE STANDING SEAM ROOFING WITH RHEINZINK Roofing Application: Mid Slope: (3 in 12 to 6 in 12) Double Lock Standing Seam: Air Z or Enkamat 7008 or 0-6” 7010 This application is Angle Lock not recommended Standing Seam: by RHEINZINK. 1. A roof with a pitch of 3 in 12 to 6 6. The standing seams can be sealed 10. Prevent water from getting under the in 12 is a mid slope roof. continuously with either butyl sealant metal by either bread panning the or closed cell urethane foam placed panel ends at ridges and roof / wall 2. On a mid slope roofs, breathable on the top of the male leg. The use of intersections or by some other means membranes are appropriate. High urethane foam requires that the height of a closure. temperature peel and stick self adhe- of the male leg be shortened to create sive membranes are recommended as enough space for the foam. 11. Terminate eave ends of panels by leav- the underlayment at the eaves, rakes, ing the underside of the eave hook hori- hips, ridges, valleys and around pen- 7. Mid slope roofs with pitches of 3 in 12 zontal to facilitate drainage of leakage etrations such as chimneys, soil pipes, to 6 in 12 require the added protection or condensation. skylights, etc. to maintain water tight- of drainage mat - RHEINZINK Air-Z ness. or Enkamat (7008 or 7010) by Bonar. 12. All roof installations require Air-Z or Enkamat (7008 or 7010). 3. Mid slope standing seam roofs should 8. Attachment clips and their associ- have cross seams consisting of a water ated fasteners for mid slope standing check and an additional soldered seam roofs should be made of stain- cleat 6” from the water check for the less steel. engagement of the roof panels or other lengths of valley. 9. Roof penetrations such as skylights, chimneys, or vents that interrupt the 4. Mid slope roofs require the added seams constitute the most vulnerable weather resistance of a double locked part of any standing seam roof. These seam. Single lock seams are not appro- areas must be detailed carefully with priate for mid slope roofs. apron fl ashings with suffi cient overlap lengths, capillary breaks, and water 5. In areas of high snow fall, the seam checks. Consult your RHEINZINK rep- height should be 1-1/2“ tall (instead of resentative for advice on proper details the standard 1“) height for additional for these conditions. weather resistance. VOLUME 8.1 STEEP SLOPE STANDING SEAM ROOFING WITH RHEINZINK Roofing Application: Steep Slope: (> 6 in 12) Double Lock Standing Seam: Angle Lock Standing Seam: Air Z or Enkamat 7008 or 7010 1. A roof with a pitch of 6 in 12 or greater 6. The standing seams can be sealed breaks, and water checks. Consult a is a steep slope roof. continuously with either butyl sealant RHEINZINK representative for advice or closed cell urethane foam placed on proper details for these conditions. 2. On steep slope roofs, breathable mem- on the top of the male leg. The use of branes are appropriate. High tem- urethane foam requires that the height 10. Prevent water from getting under the perature peel and stick self adhesive of the male leg be shortened to create metal by either bread panning the membranes are recommended as the enough space for the foam.