The 1½″ SSR 150 delivers a concealed-fastener standing seam system that handles slopes down to 1:12 — rare capability for residential metal roofing. Factory-applied 1/8″ butyl sealant bead eliminates the guesswork of field-applied sealants. UL 2218 Class 4 hail resistance means this panel survives the softball-sized hail that pounds Montana valleys every summer.
Designed for residential roofing (primarily low-slope), agricultural buildings (barns, sheds), light commercial roofing, and architectural applications. The low-slope capability makes this panel the go-to for Montana’s agricultural buildings where standard residential panels won’t work.
Technical Specifications
Standard shadow lines reduce oil canning appearance — though contractors can order without them. 40 ft maximum length means fewer seams on large agricultural structures, critical when every seam is a potential leak point.
| Specification | Value |
|---|---|
| Gauge | 24 GA |
| Substrate | Galvalume (AZ50) |
| Seam Height | 1½″ |
| Panel Coverage | 16″ |
| Factory Sealant | 1/8″ butyl sealant bead |
| Maximum Length | 40 ft (custom cut) |
| Finish System | Enduracote Paint System |
Performance Certifications
| Certification | Rating |
|---|---|
| Hail Resistance | UL 2218, Class 4 |
| Fire Resistance | UL 790, Class A |
| Wind Uplift | UL 580, Class 90 |
20-year non-perforation warranty for Galvalume panels beats the industry standard. The Enduracote Paint System includes lifetime film-integrity warranty for walls & roofs, with 30-year warranty against fade & chalk.
Installation Requirements
Minimum slope of 1:12 opens up applications that typical residential panels can’t touch. Maximum 24″ clip spacing on-center, with closer spacing potentially required for higher wind loads or specific deck types. 38 clips per 100 sq ft are typically included based on 24″ spacing.
Fastener Schedule
| Component | Fastener Type |
|---|---|
| Clips to deck | Two (2) #10 x 1″ Pancake Wood-Grip screws per clip |
| Z-closures and ridge/hip closures | #14 x 1″ Mill-Point screws |
| Trim to fascia | #10 x 1″ Wood-Grip screws |
| Ridge vents | #10 x 1 1/2″ Wood-Grip screws |
Panels are factory caulked, saving field application time during Montana’s short construction season. Factory notching available for easier hemming — another time-saver when every September day counts.
Contractor Perspective
Concealed fasteners provide improved leak resistance compared to exposed-fastener panels that dominate the agricultural market. Structural stability for low-slope applications solves the problem contractors face with standard panels that require 3:12 minimum slopes.
Compatible with ridge vent systems like CoraVent V-400 or Profile Vent. New construction or re-roofing over existing asphalt roofs (with proper substrate) expands the application range.
Professional contractors appreciate the design features, such as the narrow batten seams and clips, which facilitate ease of installation and allow for thermal movement. The Galvalume coating offers excellent corrosion resistance, extending the lifespan of the roof.
What’s Included
1½″ SSR standing-seam clips (approximately 38 per 100 sq ft), #10 x 1″ Pancake Wood-Grip screws for clips, and factory-applied sealant bead come standard. Everything else — trim, flashing, boots — costs extra.
The Bottom Line
This panel earns consideration for low-slope applications where standard residential panels fail. Class 4 hail resistance and 1:12 minimum slope make it ideal for Montana’s agricultural buildings. The concealed fastener design eliminates the weak points of exposed-fastener barn metal.
Not the cheapest option. But for contractors dealing with low slopes, hail-prone areas, or clients who understand that concealed fasteners outlast exposed ones, the SSR 150 delivers proven performance. 40-foot maximum lengths reduce seams on large structures. Factory-applied sealant speeds installation when weather windows are tight.
Frequently Asked Questions
Q: What’s the actual minimum slope for the SSR 150?
A: 1:12 minimum slope. Panels are factory caulked specifically for low-slope performance.
Q: How many fasteners per square?
A: 38 clips per 100 sq ft based on 24″ spacing. Each clip requires two #10 x 1″ Pancake Wood-Grip screws, so figure 76 screws per square minimum.
Q: What’s the hail rating?
A: UL 2218 Class 4 — the highest rating available. Survives 2-inch diameter ice balls dropped from 20 feet.
Q: Can this go over existing shingles?
A: Yes, suitable for re-roofing over existing asphalt roofs with proper substrate. Check local codes for layer limits.
Q: What warranty coverage comes with Galvalume panels?
A: 20-year non-perforation warranty for Galvalume panels. Enduracote paint system includes lifetime film-integrity warranty with 30-year warranty against fade and chalk.
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