Interactive 3D System Guide
Standing-Seam Metal Roof — Explore Every Layer in Interactive 3D
This is the premium standing-seam assembly Coastal Roofing of Georgia installs on churches, hospitality buildings, historic restorations, and institutional buildings where the roof aesthetic matters as much as the waterproofing. Rotate the model and press Play Install to watch the concealed-clip system go together.
The defining feature: no fasteners ever penetrate the panel surface. Concealed clips grip the raised seams from below, letting the panels expand and contract with temperature for 40-50 years of service.
Drag to rotate · Scroll to zoom · Press ▶ Play Install to watch the system installed step by step · Toggle Explode View to separate the layers
Bottom to Top
The Assembly, Layer by Layer
Structural Deck
Plywood / OSB / steel deck, 3/4"
Wood deck is most common on church and historic installs; steel deck for commercial.
Synthetic Underlayment
Self-adhering high-temp underlayment
Resists 240°F+ panel heat and lasts the lifetime of the metal roof — not asphalt felt.
Rigid Insulation
Polyiso rigid foam, 2" / R-13
Above-deck insulation for the commercial cold-roof assembly.
Cover Board / Substrate
Plywood substrate, 1/2"
The solid plane the concealed clips fasten to — prevents deflection that would compromise seam integrity.
Standing-Seam Metal Panels
24-gauge aluminum-zinc coated steel, PVDF finish
1-1/2 inch raised ribs lock adjacent panels together over concealed clips. PVDF paint holds color 40+ years.
The Same Sequence Our Crews Follow
How It's Installed — Step by Step
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1
Existing building & structural deck. Existing building with parapet walls — structural deck exposed and inspected.
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2
Synthetic self-adhering underlayment. Peel-and-stick high-temp underlayment across the deck — rated for 240°F+ panel heat.
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3
Rigid polyiso insulation. 2-inch polyiso layer for the cold-roof commercial assembly.
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4
Plywood substrate. Half-inch plywood — the hard plane the clips fasten to.
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5
Standing-seam panels installed. Panels locked rib-to-rib over concealed clips. No fasteners through the surface — ever.
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6
Parapet coping + eave trim. Metal coping caps the parapet; pre-formed eave trim finishes the perimeter. Penetrations are routed off the panel field entirely.
Press ▶ Play Install in the 3D model above to watch every one of these steps animate in order.
Common Questions
Why don't standing-seam roofs leak at fasteners?
Because there are none in the surface. Concealed clips below the raised seams grip the panels, and the seams themselves are mechanically locked. The panel field is a continuous, unpenetrated metal skin.
How long does a standing-seam metal roof last?
40-50 years is the design life with a PVDF paint finish. It's the longest-lived roof system we install, which is why we spec it for buildings with a 40+ year asset hold.
Can standing-seam be used on Savannah historic buildings?
Yes — Historic Review Board-approved profiles use this same concealed-clip assembly with approved seam heights and colors. We handle the HRB / COA process as part of the project.
What happens with HVAC units and vents on a metal roof?
Penetrations get routed to flat sections or gable ends wherever possible, preserving the unbroken panel field. Where a penetration is unavoidable, factory-formed boots made for panel profiles keep the warranty intact.
Ready When You Are
See it on your building.
Free inspection, straight answers, and a spec matched to your building — not a one-size-fits-all pitch.