KingSeam

KingSeam is an insulated standing seam roof panel from Kingspan. A polyisocyanurate (PIR) core is foamed in place between two steel facers, so the insulation and the weathering surface form a single panel installed in one step. The exterior face is a Mesa profile with trapezoidal ribs, and the interior face is Mesa. Joints are field seamed, with hidden fastener clips, and each joint carries a vertical side seam with an integral batten.

KingSeam is made for new and retrofit roofs on commercial, industrial, institutional and cold storage buildings. Factory cutbacks are available for selected eave and end-lap conditions, and the panel accommodates appropriately designed safety and fall-arrest systems. It sits in the Kingspan range of insulated roof panels beside KingRib 3 and KingRib 5.

• Core: polyisocyanurate (PIR), foamed in place
• Exterior profile: Mesa with trapezoidal ribs, non-embossed
• Interior profile: Mesa, stucco embossed or non-embossed
• Gauge: 26, 24 or 22 ga on each face
• Cover width: 40 inches, measured before seaming
• Thickness: 3.25, 4, 5 or 6 inches
• Length: 8 feet to 50 feet
• Reveal option: none
• Post fabrication: cutbacks

Panels are field seamed with a power seamer. The standing seam allows roof slopes as low as 1/4 in 12 for single-panel runs and 1/2 in 12 where end laps are used.

The PIR core is rated at about R-7.1 per inch at 75 degrees F mean temperature and about R-8.1 per inch at 35 degrees F, tested to ASTM C518. Panel values by thickness are as follows.

• 3.25 inches: R-23.1 at 75 degrees F and R-26.3 at 35 degrees F
• 4 inches: R-28.4 and R-32.4
• 5 inches: R-35.5 and R-40.5
• 6 inches: R-42.6 and R-48.6

The 40 inch wide panel is published with weights in pounds per square foot for six facer pairings.

• 26 ga on both faces: 2.53 at 3.25 inches, 2.68 at 4 inches, 2.88 at 5 inches and 3.08 at 6 inches
• 26 ga interior with 24 ga exterior: 2.81, 2.96, 3.16 and 3.36
• 24 ga on both faces: 3.09, 3.24, 3.44 and 3.64
• 26 ga interior with 22 ga exterior: 3.08, 3.23, 3.43 and 3.63
• 24 ga interior with 22 ga exterior: 3.37, 3.52, 3.72 and 3.92
• 22 ga on both faces: 3.66, 3.81, 4.01 and 4.21

• FM 4880: Class 1 fire rating of building panels or interior finish materials
• ASTM E84: flame spread 25 or less, smoke developed 450 or less
• ULC-S126: passed, fire spread under roof-deck assemblies
• FM 4471 wind uplift: Class 1-60 (RoofNav assembly 317601-0-0), Class 1-90 (278783-0-0), Class 1-105 (317604-0-0) and Class 1-135 (317605-0-0)
• ASTM E1592: strength testing, with panel load, span and deflection tables available
• ASTM E1680 air infiltration: 0.01 CFM per square foot of panel area at 12 psf
• ASTM E1646 water penetration: no water penetration at 20.0 psf

The ratings apply to panels 3.25 to 6 inches thick and 40 inches wide. FM compliance follows the FM installation specifications on RoofNav.com.

KingSeam has separate span tables for gravity loads and for negative wind pressure.

The gravity tables use an L/240 deflection limit and a concealed clip with two 1/4 inch DB TEK screws, and show service-load spans for positive gravity load including panel weight, from 20 psf to 90 psf. With 22 ga on both faces, a 3.25 inch panel spans 14 feet 11 inches single span at 20 psf and 3 feet 9 inches at 90 psf. A 6 inch panel spans 22 feet 6 inches at 20 psf and 6 feet 8 inches at 90 psf.

The negative wind pressure tables run from 20 psf to 75 psf, with the same L/240 limit and thermal differential excluded, and are given for six facer pairings. Supports are 16, 14 and 12 ga grade 50 steel and 3/16 inch grade 36 plate, with DB fastener pull-out values of 785, 1,035, 1,665 and 3,115 lbs. With 22 ga on both faces on 3/16 inch plate, the single span is 16 feet 6 inches at 20 psf and 4 feet 4 inches at 75 psf for every thickness, while a 6 inch panel in double span reaches 17 feet 9 inches at 20 psf. With 26 ga on both faces the single span falls to 10 feet 7 inches at 20 psf. On 12 ga support with a 22 ga exterior and 24 ga interior, the 3.25 inch single span at 20 psf is 15 feet.

The KingSeam installation guide covers material handling, delivery inspection, panel handling and storage, removal of the protective film, structural steel framing, panel cutting, sealant placement, touch-up paint, and cleaning and maintenance. Its installation sections cover the roof, cold storage roof installation and cold storage details, followed by materials, tools and hardware, flashings, and the KingSeam hand seamer and D.I. Roof Seamer.

The CAD detail set includes the panel profile, panel joint and joint sequence, an enhancement clip, joints at intermediate supports with and without the enhancement clip, joint layout, end laps in staggered, male-leg and female-leg forms, ridge assemblies and closures, low and high eaves with northern and southern gutters, gutter hangers, rake fascias, valleys, and wall-to-roof transitions at masonry. A drawing note locates the primary vapor barrier on the warm side in winter for most U.S. climatic zones.

KingSeam shares a color chart with KingRib. Kingspan offers an optional Manufacturers Weathertight Warranty program for KingSeam. The panel is an insulated version of the standing seam metal roof type, with a trapezoidal rib profile.