If you’re looking for a roof that delivers unmatched strength, bold curb appeal, and a 50+ year lifespan, a standing seam metal roof is the ultimate upgrade. At J. Carnes & Son Roofing, we install double lock standing seam metal roofing systems using Englert steel and aluminum panels, fabricated on site for a perfect fit.
This isn’t a mass-produced roof—this is a precision-built system, engineered to outperform in the harshest New England conditions.
WHY CHOOSE A DOUBLE LOCK STANDING SEAM ROOF?
Built to Withstand. Designed to Impress.
Double lock (180-degree seam) systems are the strongest and most weather-resistant standing seam option on the market. Unlike snap-lock or single lock systems, double lock panels are mechanically seamed twice, creating a watertight, wind-resistant seal that performs even in the most extreme climates.
- Ideal for low-slope roofs and wind-exposed locations
- Prevents water infiltration and seam failure over time
- Long-term durability with little to no maintenance required
- Preferred system for architects, engineers, and discerning property owners
This is the system we trust on our own buildings—and the only one we recommend for clients who want true lifetime performance.
Custom Panels. Zero Delays.
Flawless Fit.
We fabricate all standing seam panels on site, using our own equipment and Englert metals—available in steel or aluminum, with a wide variety of custom colors and coatings. On-site fabrication ensures:
- Fewer handling errors and better panel protection
- Exact cuts for your roof’s unique pitch and layout
- Fast turnaround with no reliance on third-party suppliers
- Cleaner seams, tighter details, and a sharper finished look
We don’t just install roofs—we engineer solutions that perform for decades.
Custom Panels. Zero Delays.
Flawless Fit.
We fabricate all standing seam panels on site, using our own equipment and Englert metals—available in steel or aluminum, with a wide variety of custom colors and coatings. On-site fabrication ensures:
- Fewer handling errors and better panel protection
- Exact cuts for your roof’s unique pitch and layout
- Fast turnaround with no reliance on third-party suppliers
- Cleaner seams, tighter details, and a sharper finished look
We don’t just install roofs—we engineer solutions that perform for decades.
THE BENEFITS OF A STANDING SEAM METAL ROOF
Long-Term Value Meets Modern Performance
- 50+ Year Service Life – Outlasts asphalt, wood, and composite roofing by decades
- Low Life-Cycle Cost – Fewer repairs and replacements = long-term savings
- Rot- and Fire-Resistant – Will not crack, warp, split, or ignite
- Recycled & Recyclable – Made from steel or aluminum with up to 95% recycled content
- Cool Roof Technology – Reflects 75–80% of solar energy, reducing attic heat buildup
- Lightweight – Less than 1/3 the weight of asphalt, reduces structural strain
- Solar-Ready – Ideal platform for mounting solar panels
- Custom Colors & Finishes – Architectural curb appeal that lasts for decade
Yes—If You Want Long-Term ROI, Energy Efficiency & Zero Headaches
While asphalt shingles are more common, metal roofing delivers unmatched value over time. It’s stronger, cleaner, longer-lasting, and often pays for itself through energy savings and reduced maintenance.
- Asphalt roofs last 20–25 years (if maintained)
- Metal roofs last 50+ years with minimal upkeep
- Asphalt degrades with sun, wind, and ice
- Metal reflects UV rays and stands up to harsh weather
- Asphalt often ends up in landfills
- Metal is 100% recyclable and sustainable
Metal isn’t just better—it’s smarter.
Yes—If You Want Long-Term ROI, Energy Efficiency & Zero Headaches
While asphalt shingles are more common, metal roofing delivers unmatched value over time. It’s stronger, cleaner, longer-lasting, and often pays for itself through energy savings and reduced maintenance.
- Asphalt roofs last 20–25 years (if maintained)
- Metal roofs last 50+ years with minimal upkeep
- Asphalt degrades with sun, wind, and ice
- Metal reflects UV rays and stands up to harsh weather
- Asphalt often ends up in landfills
- Metal is 100% recyclable and sustainable
Metal isn’t just better—it’s smarter.
Double Lock Specialists – We don’t cut corners with cheaper snap-lock panels. We install the system engineers and architects prefer—because it's built to last.
In-House Metal Fabrication – All panels custom-cut on site using Englert aluminum and steel, ensuring better fit and quality control.
Experienced, Certified Crews – Our installers are highly trained in complex roof geometries, custom flashing, and low-slope integration
Honest Bidding. High Standards. Total Accountability. – From planning to final inspection, you get expert guidance and results that exceed expectations.
Let’s Build the
Last Roof You’ll Ever Need
Call today or request your standing seam metal roof consultation and discover why homeowners and commercial property owners across New Hampshire trust J. Carnes & Son Roofing.
Durability. Style. Confidence.
This is what metal roofing should be.
Got questions? We’ve got straight answers.
Standing seam metal roofing is a premium roofing system made of vertical metal panels with interlocking seams that run from the ridge to the eaves. It offers exceptional durability, modern aesthetics, and long-term performance with minimal maintenance.
Exposed fastener metal roofs (like corrugated panels) are more affordable but less durable over time. The screws penetrate the panel and are exposed to the elements, making them prone to leaks, loosening, and gasket failure over the years.
Standing seam systems conceal all fasteners beneath the seams, significantly reducing leak potential and maintenance, and providing a cleaner, more architecturally refined look.
Here’s a breakdown of the most common standing seam panel systems:
Snap Lock
• Panels "snap" together without mechanical seaming
• Faster to install, but more prone to separation under extreme wind uplift or thermal movement
• Typically used for residential roofs with simpler profiles
• Lower wind resistance and may not be ideal for New England climates
Single Lock (90-degree seam)
• Mechanically seamed once for added strength
• Better than snap-lock, but still limited in long-term wind and weather resistance
• Can separate or loosen over time with freeze/thaw cycling
Double Lock (180-degree seam) – Our Preferred System
• Seam is folded and mechanically locked twice for maximum strength and weather resistance
• Superior performance in high wind, heavy snow, and extreme temperature shifts
• Longer lifespan with fewer maintenance concerns
• Often required for low-slope roofs or commercial-grade durability
• The best long-term value despite a higher upfront investment
A properly installed standing seam metal roof can last 40 to 70 years or more, far outlasting traditional asphalt shingles. The painted finishes (Kynar 500® or similar) also offer decades of fade-resistant color.
Technically yes—but we don’t recommend it. At J. Carnes & Son Roofing, we always do a full tear-off to inspect the decking, ensure a clean surface, and meet all manufacturer warranty standards.
If you're looking for exceptional durability, long-term value, low maintenance, and modern curb appeal, yes—it’s absolutely worth the investment. Metal roofing is especially smart for homes in coastal areas, snowy regions, or where high winds are common.