The SSR 150 delivers genuine concealed-fastener performance at a 1:12 minimum slope — flatter than most residential metal panels can handle. For agricultural buildings and low-slope residential projects, it offers UL-certified protection against Montana’s worst weather.
This 24-gauge Galvalume standing seam system uses a concealed-fastener design with 16” panel coverage and 1½” seam height. The concealed fasteners eliminate leak points while allowing installation on slopes as low as 1:12. UL testing backs up the performance claims: Class 4 hail resistance, Class A fire rating, and Class 90 wind uplift.
The 1:12 minimum slope capability sets this panel apart from exposed-fastener systems that need steeper pitches. Factory-applied ⅛” butyl sealant bead comes standard on every panel, and factory notching speeds up field hemming.
Installation follows predictable patterns: maximum 24” clip spacing (closer for higher wind loads), two #10 x 1” Pancake Wood-Grip screws per clip, and 38 clips per 100 square feet at standard spacing. Panel length maxes out at 40 feet custom cut.
| Installation Specification | Value | Source |
|---|
| Minimum slope | 1:12 | manufacturer |
| Maximum clip spacing | 24” on-center | manufacturer |
| Clips per square | 38 per 100 sq ft | manufacturer |
| Fasteners per clip | 2 x #10 x 1” Pancake Wood-Grip | manufacturer |
| Maximum panel length | 40 feet | manufacturer |
| Panel coverage | 16” | manufacturer |
Additional fasteners include #14 x 1” Mill-Point screws for Z-closures and ridge/hip closures, #10 x 1” Wood-Grip screws for trim to fascia, and #10 x 1½” Wood-Grip screws for ridge vents.
Certifications and Warranty Coverage
Third-party certifications back up the performance claims: UL 2218 Class 4 hail resistance (the highest rating), UL 790 Class A fire rating, and UL 580 Class 90 wind uplift. These ratings matter when insurance adjusters show up after a storm.
| Performance Rating | Certification | Rating |
|---|
| Hail resistance | UL 2218 | Class 4 |
| Fire resistance | UL 790 | Class A |
| Wind uplift | UL 580 | Class 90 |
Galvalume panels come with a 20-year non-perforation warranty. The Enduracote paint system adds film-integrity protection plus a 30-year warranty against fade and chalk, though this product uses the unpainted Galvalume finish.
Shadow Lines and Aesthetic Control
Standard shadow lines come factory-applied to reduce oil canning appearance — though you can order panels without them. The narrow batten seams create what contractors call a “classic standing seam look” while the clips handle thermal movement.
The system works on new construction or re-roofing over existing asphalt (with proper substrate), and its low-slope capability opens up applications that would require different products in steeper-pitch-only systems. Ridge ventilation compatibility includes CoraVent V-400 or Profile Vent systems.
FAQ
What makes the SSR 150 different from exposed-fastener panels?
The concealed-fastener design eliminates the leak points that plague exposed-fastener systems, while allowing installation on slopes as low as 1:12 versus the steeper requirements of panels like Grandrib 3 or Mighti-Rib.
How many clips and fasteners should I budget for?
Plan on 38 clips per 100 square feet based on 24” spacing. Each chip needs two #10 x 1” Pancake Wood-Grip screws. Tighter spacing may be required for higher wind loads or specific deck types.
What’s the actual coverage width of each panel?
Each panel provides 16” of coverage with a 1½” standing seam height. Maximum panel length is 40 feet custom cut.
Do the panels come with sealant pre-applied?
Yes — factory-applied ⅛” butyl sealant bead comes standard on every panel. Factory notching is also available to speed up field hemming.
