What Is a Metal Roofing System?
A metal roofing system is a high-performance assembly made from interlocking panels designed to shed water efficiently while maintaining long-term durability. Unlike shingle systems, many metal roofs use concealed fastening systems, which means the fasteners are not exposed to the elements. This reduces the risk of leaks over time and contributes to a cleaner, more uniform appearance.
A complete system includes:
- High-temperature underlayment or ice and water barrier
- Interlocking metal panels
- Concealed clips or mechanical seam systems
- Custom trim and flashing components
- Ridge caps and ventilation elements
Metal roofing systems are designed to expand and contract with temperature changes. Because of this, proper layout, fastening, and installation technique are critical.
Custom Fabrication and Pre-Planning: Why Every Metal
Roof Is Unique One of the most important differences between metal roofing and other roofing systems is that metal roofs are not one-size-fits-all systems. Every metal roof is custom planned and fabricated specifically for the property it is being installed on. Unlike shingle roofing—where materials come in standard sizes—metal roofing panels are often custom-made based on the exact dimensions and design of the roof. This process begins before installation, during the measuring and planning stage.
When preparing for a metal roof, several key factors must be carefully evaluated:
- Total square footage of the roof
- Roof pitch (slope) of each section
- Layout including valleys, hips, and transitions
- Panel width selection
- Panel length per roof section
Panel width plays a major role in the final appearance. Wider panels create a cleaner, more modern look, while narrower panels create a more detailed, traditional appearance. This is a design decision made before fabrication. Panel lengths are also determined based on each section of the roof. Because most roofs are not perfectly uniform, panel lengths will vary. These panels are fabricated specifically for that property to ensure proper fit and performance. Flashing is also custom-made. Metal roofing requires custom-fabricated flashing components for chimneys, valleys, walls, penetrations, and transitions. Since every roof layout is different, these details are unique to each project.
Metal roofing is not just installed—it is designed, measured, and fabricated to match the exact structure it will be installed on.
How a Metal Roof Is Installed and Why Each Step Matters
Every project begins with a complete tear-off of the existing roofing system. All materials— including shingles, underlayment, flashings, fasteners, and ventilation components—are removed. Nothing is reused. This ensures a clean surface and eliminates weak points.
Once removed:
Decking is inspected, and Damaged wood is replaced.
1
High-Temperature Underlayment Installation
High-temp underlayment or ice and water barrier is installed. This protects the decking from condensation and moisture beneath the metal panels. Metal transfers heat, so high-temp materials are required for long-term performance.
2
Roof Layout and Panel Alignment
The roof is carefully measured and laid out. This ensures: This encompasses Straight panel lines, Balanced appearance and Proper expansion behavior.
3
Panel Installation (Standing Seam or Double Lock)
Panels are installed using concealed clips or mechanical seams.
This allows panels to expand and contract while remaining watertight.
4
Fastening and Expansion Control
Proper fastening ensures: This encompasses Panels stay secure, Movement is allowed and No warping or noise issues.
5
Flashing Installation
All flashing is new and custom fabricated. This protects the most leak-prone areas of the roof.
6
Trim and Edge Detailing
Trim is installed to: This encompasses Protect edges, Direct water and Finish the appearance.
7
Ridge Cap and Ventilation
Ventilation helps: This encompasses Reduce heat, Prevent moisture buildup and Extend roof life.
8
Final Inspection and Cleanup
This encompasses System inspected, Site cleaned and Final walkthrough completed.
Full crew on site — standing seam metal roof replacement, every step coordinated and documented
Standing seam panel installation in progress — concealed clips, proper alignment, and high-temp underlayment
Types of Metal Roofing We Offer
Standing Seam (Most Common Choice)
Best when:
Clean look is desired, and Long-term durability matters.
Double Lock (High-Performance Option)
Best when:
Low slope roofs, and Maximum durability needed.
Copper (Premium Option)
Best when:
Appearance is top priority, and High-end design is required.
Standing Seam vs Double Lock vs Copper
Feature Standing Seam Double Lock Copper
Appearance Clean Technical High-end
Performance High Very high Extreme
Cost Moderate Higher Premium
How Long Does a Metal Roof Last?
Standing seam: 40–70+ years, Double lock: 50+ years, and Copper: 70+ years.
How Much Does Metal Roofing Cost?
Depends on:
- Size
- Complexity
- Material
- Custom fabrication
Inspection required.
Warranties That Protect Your Investment
Manufacturer warranty, and Shelby workmanship warranty.
Both transferable
Completed standing seam metal roof — Shelby Roofing Services, Greater Philadelphia Area
Why Proper Installation Matters More Than Material
Metal roofing requires precision. We focus on:
- Alignment
- Fastening
- Flashing
- Detail work
Permits and Why They Matter
Ensures:
Licensing, Insurance, and Code compliance.
Job Site Protection, Cleanup, and Final Walkthrough
- Dumpster with protection
- Continuous cleanup
- Nail removal
- Final walkthrough
What Sets Shelby Roofing Services Apart
We guide based on:
- Appearance
- Budget
- Longevity
- Property goals
We provide:
- Documentation
- Drone footage
- Custom copper work
- Clear communication
Standing seam panel installation — custom fabricated, properly aligned, and anchored with concealed clips
the Greater Philadelphia Area
Frequently Asked Questions Is it loud?
No with proper install
Do you reuse materials?
No
Is it worth it?
Yes long-term
From the Field
Precision at Every Detail
Metal roofing is defined by the quality of its installation details — the seams, the clips, the flashing transitions. This short clip shows what separates a properly installed standing seam system from a standard job.
Customer Testimonial
Hear It From a Homeowner
Jonathan had a standing seam metal roof installed by our team. Watch the short interview to hear directly about the experience — the process, the crew, and the finished result.
Schedule a Metal Roof Inspection
We provide detailed inspections and recommendations tailored to your property.
