Metal Roofing Products

Interlock® Solid Copper Mediterranean Tile Roofing

The rolled S-profile of clay barrel tile in 99.9% pure architectural copper — Mediterranean, Spanish Colonial, and Italianate architecture in a material whose service life is measured in centuries. Backed by the Interlock® Lifetime Transferable Warranty.

Interlock® Solid Copper Mediterranean Tile Roofing reproduces the rolled S-profile of fired clay barrel tile in solid Copper Alloy C11000 (ASTM B370) at approximately one-tenth the structural load — the Mediterranean silhouette executed in a material engineered to outlast the building beneath it.

TL;DR Summary

Interlock® Solid Copper Mediterranean Tile Roofing is the rolled S-profile silhouette of clay barrel tile, executed in 99.9% pure architectural copper (C11000, ASTM B370). The Mediterranean look at approximately one-tenth the structural load of fired clay tile (500–1,500 lbs/sq), resolving both retrofit feasibility and clay tile’s freeze-thaw fracture liability. 20 oz typical; 140–180 lbs/sq.

Overview

What Is Interlock® Solid Copper Mediterranean Tile Roofing?

Interlock® Solid Copper Mediterranean Tile Roofing is the rolled S-profile silhouette of clay barrel tile, executed in 99.9% pure electrolytic tough-pitch copper (Copper Alloy C11000) conforming to ASTM B370 — the recognized North American standard for cold-rolled architectural copper sheet. The profile matches Interlock's aluminum Mediterranean Metal Tile panel geometry for visual continuity with Mediterranean, Spanish Colonial, Italianate, and Mission Revival architecture; the substrate is solid copper rather than coated aluminum, with 20 oz typically specified for the deeper tile relief.

Color is intrinsic to the metal — no PVDF coating, mineral glaze, or applied finish to fail (unlike fired clay tile which is prone to fracture under impact and freeze-thaw cycling, and concrete tile which weathers and stains over decades). Newly installed Copper Tile panels arrive bright salmon-pink and typically progress through natural oxidation — russet bronze (cuprite, Cu₂O), matte chocolate brown (tenorite, CuO), and ultimately the iconic verdigris green-blue patina, a copper-sulfate/hydroxysulfate layer of brochantite, antlerite, and posnjakite that forms copper's natural weathered surface. Because patina develops with atmospheric exposure, its rate and uniformity vary from roof to roof and are not guaranteed.

At approximately 140–180 lbs per square (the deeper tile profile carries more material; 20 oz copper typically specified), structural assessment is recommended for retrofit applications — though the load remains a fraction of fired clay tile (500–1,500 lbs/sq) that this profile replaces. Solid copper carries an inherent Class A fire rating (copper melts at 1,984°F), UL 2218 Class 4 impact resistance, ASTM E1592 wind-uplift, specified under CSI MasterFormat 07 41 13, conforming to IBC §1507.4 and IRC §R905.10. 100% recyclable, free of fluoropolymers and plasticizers, and backed by the Interlock® Lifetime Transferable Warranty.

Who It's For

Interlock® Solid Copper Mediterranean Tile for Estates, Architects, and Specifiers

You want the Mediterranean silhouette — the warm rolled-tile rhythm that defines Spanish Colonial, Italianate, and Mission architecture — but you also want to avoid the structural reinforcement requirements (500–1,500 lbs per square), the freeze-thaw fracture risk, and the recurring tile-replacement costs of fired clay or concrete tile. Interlock® Solid Copper Tile gives you the Mediterranean look at roughly one-tenth the structural load, with a material that develops a living patina rather than degrading toward replacement. Backed by the Interlock® Lifetime Transferable Warranty.

Interlock® Solid Copper Mediterranean Tile is specified under CSI MasterFormat 07 41 13 (Metal Roof Panels). The substrate is Copper Alloy C11000 cold-rolled to architectural sheet per ASTM B370, typically supplied in 20 oz (~0.027") nominal weight for the deeper tile profile (16 oz also available for lighter installations). Panel geometry matches Interlock Mediterranean Metal Tile profile on the four-way interlocking concealed-fastener system with stainless steel fasteners specified throughout. Performance: UL 790 Class A fire (inherent / non-combustible per ASTM E136), UL 2218 Class 4 impact (vs the fracture vulnerability of fired clay tile), ASTM E1592 wind-uplift, IBC §1507.4 / IRC §R905.10 conformance. Sustainability: 100% recyclable, contributes to LEED Materials & Resources credits. Full panel profile drawings, fastener schedules, and CSI-formatted submittal language available on request.

Interlock® Solid Copper Mediterranean Tile installs using the four-way interlocking concealed-fastener system with stainless steel fasteners throughout to prevent galvanic corrosion. The deeper tile profile is engineered for the same architectural visual depth as fired clay tile at a fraction of the installed weight. Copper requires careful detailing for runoff management and incompatible-metal contact must be avoided. Certified Interlock installers receive copper-specific training and technical support. Contact your regional Interlock representative to discuss copper dealer opportunities.

KEY ADVANTAGES

The Interlock® Solid Copper Mediterranean Tile Advantage

Multi-Century Service Life

Copper roofing carries the only roofing service record measured in centuries rather than decades — documented across Mediterranean, civic, and ecclesiastical architecture worldwide. The barrel-tile silhouette you specify today will be on the building for generations.

Class A Inherent Fire Resistance

Copper is inherently non-combustible (ASTM E136; melting point 1,984°F) — the strongest fire performance specification available, applicable in wildfire-zone California, Arizona, and Texas Mediterranean residential applications.

Naturally Evolving Patina Finish

Color is intrinsic to copper — no glaze, mineral coating, or applied finish to fail. The roof typically evolves through natural oxidation: salmon-pink to russet bronze, then chocolate-brown CuO, and ultimately verdigris green-blue (brochantite, antlerite, posnjakite). Patina is copper’s natural weathered surface; its rate and uniformity vary with environmental and atmospheric conditions and are not guaranteed.

UL 2218 Class 4 Impact / 120 mph Wind

Solid Copper Tile carries the highest UL 2218 hail-impact classification (Class 4) and is warranted to 120 mph wind — vs the documented fracture vulnerability of fired clay tile under hail impact and the displacement risk of concrete tile in high-wind events.

One-Tenth the Structural Load of Fired Clay Tile

At approximately 140–180 lbs per square, Solid Copper Tile delivers the Mediterranean silhouette without the structural reinforcement requirements of fired clay (500–1,500 lbs/sq) or concrete tile (600–1,100 lbs/sq) — a defining specification advantage for retrofit applications and modern lightweight framing.

Lifetime Transferable Warranty

Backed by the Interlock® Lifetime Transferable Warranty — applied to a material whose verifiable service life, documented across centuries of Mediterranean civic, ecclesiastical, and high-end residential applications, makes solid copper the most defensible long-term roofing investment.

INDUSTRY EXPERT TESTIMONIAL

Why a 48-Year Metal Roofing Coatings Veteran Endorses Interlock®

Robert Scichili · President, Robert Scichili Associates, Inc.
· 21 years Desoto · 10 years Morton International · 6 years BASF · 10 years 3M

In my 48 years of experience in the metal roofing industry (21 years with Desoto, 10 years with Morton International, 6 years with BASF and 10 years with 3M), it is most unique to find a company who is constantly striving to provide roofing products that live up to claims that are being made to customers. From the very moment the Interlock Roofing System is applied to a home the customer experiences excellent installation and a very unique surface design all applied to the finest metal available. All these are provided with the promise of great durability and sustainability and a low maintenance roofing system. The use of Alunar(r) Coating Systems, which have a superior record of color fastness, chalk resistance and literal fusion like adhesion is the finest coating system anyone can provide.

Independent testimonial from an industry expert. Robert Scichili is President of Robert Scichili Associates, Inc. (Richardson, TX) and Principal Partner at RSK Avanti Partners LLC — a strategic marketing, sales, and technical development consultancy for the metal construction and architectural coatings industries. He previously served as Business Development Manager for the Industrial Coatings Division at BASF Corporation, where he led market positioning for the Ultra-Cool reflective coatings line. Robert is a founding Board Member of the Cool Metal Roofing Coalition and a published authority on Energy Star, LEED, and cool metal roofing technologies. His 48-year career in industrial coatings spans Desoto, Morton International, BASF, and 3M.

Technical Data

Product Specifications

Specification	Details
Base Material & Alloy Specification	Copper Alloy C11000 (electrolytic tough-pitch copper, 99.9% pure) cold-rolled to architectural sheet per ASTM B370
Panel Gauge & Nominal Weight	20 oz/ft² (~0.027" / 0.686 mm) typically specified for the deeper tile profile; 16 oz (~0.0216") also available for lighter installations
Installed Weight Per Square	~140–180 lbs per 100 sq ft (the deeper tile profile carries the most material of any Interlock® copper profile; remains a fraction of fired clay tile at 500–1,500 lbs/sq)
Hail Impact Resistance Rating	Class 4 — UL 2218 (highest classification issued)
Fire Resistance Rating	Class A (inherent / non-combustible per ASTM E136; copper melting point 1,984°F)
Wind Speed Resistance — Manufacturer Warranted	120 mph (193 kph) warranted; wind-uplift evaluated to ASTM E1592
Surface Finish System	None applied. Copper naturally tarnishes and develops a multi-stage atmospheric patina (cuprite Cu₂O → tenorite CuO → verdigris [brochantite, antlerite, posnjakite]); the rate and uniformity of patina formation vary with environmental and atmospheric conditions and are not guaranteed
Panel Size, Weather Exposure & Coverage Geometry	Matches Interlock® Mediterranean Metal Tile panel geometry for design continuity with the aluminum line — rolled S-profile barrel tile silhouette. Contact your local Interlock dealer for current panel dimensions and exposure
Material Warranty Program Name	Interlock Lifetime Transferable Warranty (Guardian Lifetime Limited Non-Prorated Material Warranty)
Warranty Duration, Ownership Terms & Transferability	Lifetime for original registered owner; transferable (one-time) — applied to a material with documented multi-century service life
Recycled Content & End-of-Life Recyclability	100% recyclable at end of service. Architectural copper is routinely fabricated with substantial recycled content per Copper Development Association data
Building Code Conformance & Sustainability Credits	Conforms to IBC §1507.4 and IRC §R905.10 (metal roof panels). Contributes to LEED Materials & Resources credits; Environmental Product Declarations available
CSI MasterFormat Division & Section Reference	07 41 13 — Metal Roof Panels

Available Colors

Patina Evolution — The Living Finish

Interlock® Solid Copper Mediterranean Tile is offered as a single architectural specification rather than a color palette — because copper is not a finish applied to a substrate; it *is* the substrate. Every panel is roll-formed from 99.9% pure electrolytic tough-pitch copper (Copper Alloy C11000, ASTM B370). Color is intrinsic to the metal: there is no glaze, paint film, mineral coating, or organic binder to chalk, fade, peel, delaminate, or fail by UV exposure. What replaces a fixed color is a documented oxidation sequence — the same self-passivating chemistry that has preserved the cladding of the Statue of Liberty (1886), the U.S. Capitol Dome (1863), and copper-roofed Mediterranean, ecclesiastical, and civic architecture across Europe and North America in continuous service for centuries. New Interlock® Solid Copper Tile arrives bright salmon-pink and progresses through measurable stages: russet bronze within weeks as cuprite (Cu₂O) forms; matte chocolate-brown tenorite (CuO) across one to three years; and ultimately the iconic verdigris green-blue — a stable copper-sulfate/hydroxysulfate stratum of brochantite (Cu₄SO₄(OH)₆), antlerite (Cu₃SO₄(OH)₄), and posnjakite (Cu₄SO₄(OH)₆·H₂O) that becomes the roof’s own mineral protective barrier. Patina is not deterioration — it is the engineered service life of the material expressing itself. Because copper is a single specification, not a palette, Interlock provides physical material samples rather than printed swatch cards. Contact your local Interlock dealer to request a solid-copper sample and the full architectural specification sheet.

Material Comparison

Solid Copper Mediterranean Tile vs. Clay / Concrete Tile vs. Asphalt Shingles

How does Interlock® Solid Copper Mediterranean Tile compare to fired clay tile, concrete tile, and the alternatives a homeowner typically considers for Mediterranean, Spanish Colonial, and Italianate architecture? The numbers tell a clear story about structural load, fracture resistance, service life, and lifetime financial logic.

Specification	Interlock® Solid Copper Mediterranean Tile	Clay / Concrete Tile	Asphalt Shingles
Lifespan	100-200+ years (documented)	50-100+ years (clay) / 30-50 years (concrete)	15-25 years
Weight	~140-180 lbs/square	500-1,500 lbs/square (requires structural reinforcement)	250-350 lbs/square
Fire Rating	Class A (inherent / non-combustible)	Class A (non-combustible)	Class A (with mat)
Warranty	Lifetime Transferable	30-50 year limited	20-30 year limited
Maintenance	Essentially maintenance-free (patina self-passivates)	Periodic tile replacement (fracture / displacement)	Periodic inspection, re-nailing

Environmental Performance

Sustainability & Energy Efficiency

Interlock Copper Roofing is the most sustainable premium roofing material available — a 100% natural, 100% recyclable solid copper product with no synthetic coatings, no chemical treatments, and no landfill contribution at end of life. Copper’s multi-century service life produces the lowest embodied carbon per year of use of any roofing material on the market. Interlock Copper is certified as a Green Roofing Product, requires zero maintenance throughout its lifespan, and retains full material recovery value when eventually recycled. For architects, developers, and homeowners committed to genuine long-term environmental performance, Interlock Copper Roofing is the definitive sustainable roofing specification.

Interlock Copper may contribute to LEED v4 credits under Materials & Resources (MR) — Recycled Content, and Energy & Atmosphere — Enhanced Energy Performance. Contact your Interlock dealer for LEED documentation support.

Verified Customer Reviews

What Homeowners Say About Interlock Metal Roofing

This is the 3rd roof I have had put on by Interlock Roofing. I put one on my original house, my cottage, and now my new house. They have always done an excellent job, and the aluminum shingles are a great product — light, sturdy, and good-looking, even years down the road.

Bruce M.Wakefield, MA

We had our roof replaced in 2017 with an aluminum roof by Interlock Metal Roofing. We live on the lake, and prior to the replacement, we were spending thousands of dollars every year as the shingles used to fly away in the wind. We have never had any problems in the last 9 years. We had a great experience with Interlock Metal Roofing. They were very professional and did a beautiful job, although it was difficult as our roof is quite high. Our roof is still beautiful, and we have never had a worry about it.

Beena M.Sudbury, ON

I LOVE MY INTERLOCK ROOF! No more climbing up there to clean it off, no more gritty stuff falling into my garden after a few years. It looks fabulous and does what it's supposed to! And then there are the installers: knowledgeable, attentive to detail, and personable. Ivan is a gem! He attended to the addition of a small bit of flashing efficiently and cleaned the whole roof with a blower in short order. After almost ten years, it's STILL the only roof I would choose!

Sue Lyn T.Corvallis, OR

FAQ

Frequently Asked Questions About Solid Copper Mediterranean Tile Roofing

What is Interlock® Solid Copper Mediterranean Tile Roofing?

Interlock® Solid Copper Mediterranean Tile Roofing is the rolled S-profile silhouette of clay barrel tile executed in 99.9% pure electrolytic tough-pitch copper (Copper Alloy C11000) conforming to ASTM B370. Panel geometry matches the aluminum Mediterranean Metal Tile profile on the four-way interlocking concealed-fastener system; 20 oz copper sheet is typically specified for the deeper tile relief, with 16 oz also available. The substrate is solid copper, not coated aluminum or copper-plated steel.

Will copper tile look authentic on a Spanish Colonial or Mediterranean home?

Yes — the rolled S-profile silhouette is engineered to reproduce the deep barrel tile geometry that defines Mediterranean, Spanish Colonial, Italianate, and Mission Revival architecture. Where the appearance differs is in the patina evolution: rather than the consistent terracotta of fired clay tile, copper develops through salmon-pink, russet bronze, chocolate brown, and ultimately verdigris green-blue. Many Mediterranean-style architects consider the patina an architectural enhancement rather than a departure — historic Mediterranean civic and ecclesiastical buildings frequently combined clay tile siding with copper roof accents.

How much lighter is copper tile compared to real clay or concrete barrel tile?

Substantially — this is one of solid copper tile’s defining specification advantages. At approximately 140–180 lbs per square, Interlock® Solid Copper Tile is roughly one-fourth to one-tenth the installed weight of fired clay barrel tile (500–1,500 lbs/sq depending on thickness and profile) or concrete tile (600–1,100 lbs/sq). The structural reinforcement frequently required for clay or concrete tile retrofits is rarely required for copper tile.

Can I install copper tile without structural reinforcement?

In most cases, yes. Standard residential roof framing engineered for asphalt shingles (250–350 lbs/sq) carries copper tile (~140–180 lbs/sq) without reinforcement. The exception is older Spanish Colonial homes originally engineered for fired clay tile and subsequently re-roofed to asphalt — those typically retain the original heavy-tile framing capacity. Structural assessment is recommended for retrofit, but reinforcement is rarely required. Your local Interlock dealer will perform the deck and structural assessment as part of project specification.

How does copper tile handle California wildfire-zone requirements?

Solid copper is inherently non-combustible per ASTM E136 (melting point 1,984°F), achieving Class A under ASTM E108 / UL 790 by virtue of the material itself — satisfying California Chapter 7A wildfire-zone roofing requirements. The Mediterranean and Spanish Colonial architectural styles are concentrated in California’s wildfire-prone interior, where Class A roofing is mandatory. Solid Copper Tile meets this requirement while preserving the Mediterranean architectural language that defines the regional vernacular.

How does Interlock metal roofing perform in high winds?

Interlock’s panels lock together and fasten to the deck with a concealed clip system, so there are no exposed fasteners to work loose in a storm. The roof is warranted against wind uplift to 120 mph and tested to ASTM D3161 Class F, and the interlocking design allows the metal to expand and contract with temperature changes without compromising the weather seal. That combination is engineered to hold up through the high winds and seasonal storms typical of most North American regions.

How does the verdigris patina look on a Mediterranean-style home?

The patina evolution adds architectural depth to Mediterranean styling rather than detracting from it. Historic Mediterranean civic and ecclesiastical buildings across Spain, Italy, and Mexico routinely combine clay-tile and patinated-copper surfaces — the bronze and verdigris stages read as warm, weathered, and architecturally rich against stucco, plaster, and Mediterranean material palettes. For projects requiring a specific patina stage at completion (matched to existing copper accents, or specified at design review), Interlock-certified installers can apply professional patina-accelerant solutions.

How long does copper tile last vs. real clay tile?

Both are multi-century materials with different failure modes. Fired clay tile is documented at 50–100+ years of service, but is prone to fracture under hail impact and freeze-thaw cycling — individual tile replacement becomes ongoing maintenance, particularly in climates with seasonal freeze cycles. Solid copper tile is documented at 100–200+ years without the fracture liability — copper deforms slightly under exceptional impact but does not crack or shatter. Concrete tile, by contrast, has a service life of only 30–50 years and weathers visibly.

Can copper tile be installed over existing clay or concrete tile?

Generally no — existing clay or concrete tile must be removed before solid copper tile installation. The existing tile presents an uneven substrate that cannot support the underlayment and fastening system required for the four-way interlocking copper tile assembly. Full tear-off and deck assessment is standard practice. The substantial weight reduction (from 500–1,500 lbs/sq down to ~140–180 lbs/sq) means structural reinforcement is rarely required after tear-off, even when the original structure was designed for clay tile loading.

Will runoff from copper tile stain my stucco exterior?

It can if drainage is unmanaged — and this is a particularly important consideration for Mediterranean and Spanish Colonial homes with stucco or plaster exteriors. Copper-laden water carries dissolved copper salts that will stain unsealed stucco compositions. Interlock installations on Mediterranean homes are specified with comprehensive gutter, downspout, and drip-edge detailing to direct runoff away from staining-vulnerable wall surfaces. Certified Interlock installers are trained on copper-specific detailing for stucco architecture; this is one of the reasons solid copper is installed via the dealer network.

AT A GLANCE

Key Takeaways

• Spanish Colonial / Mediterranean / Italianate / Mission Revival architectural language in solid copper.
• Copper Alloy C11000 per ASTM B370; 20 oz (~0.027″) typical for the deeper tile relief; 16 oz also available.
• Installed weight ~140–180 lbs/sq vs 500–1,500 lbs/sq for fired clay or 600–1,100 lbs/sq for concrete tile.
• Inherent Class A fire per ASTM E136 — meets California wildfire-zone Mediterranean residential requirements.
• UL 2218 Class 4 hail — copper does not fracture under hail impact (vs clay tile’s documented fracture vulnerability).
• ASTM E1592 wind-uplift evaluated; 120 mph warranted wind; IBC §1507.4 / IRC §R905.10 conformance.
• Documented 100–200+ year service life vs clay tile’s 50–100 yr (with fracture replacement) or concrete tile’s 30–50 yr.

Sample ID	Heading 1	Heading 2
100+ YEAR documented service life	140–180 LBS / SQ (vs clay 500–1,500)	INHERENT Class A fire (ASTM E136)	UL CLASS 4 hail (no fracture liability)

Profiles

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NEXT STEPS

Free, No-Obligation Interlock® Consultation

Every Interlock® consultation is free and carries no obligation — for homeowners, architects, and roofing contractors alike. Contact Interlock and a certified local sales representative from your exclusive Interlock® dealer will reach out to schedule a Zoom call, office meeting, or in-home consultation. The conversation walks through profile selection, technical installation requirements (slope, venting, underlayment, fasteners, trim, snow management, solar), and project-specific pricing — in that order, never the reverse.

For homeowners →

Review profile options, color samples, and the Guardian Lifetime Transferable Warranty applied to your specific home.

For architects →

Walk through CSI MasterFormat 07 31 16 / 07 41 13 specifications, ICC-ES ESR-1790 documentation, and assembly options for your project submittal.

For roofing contractors →

Discuss certified-installer territory, training, technical support, and warranty registration through the Interlock® dealer network.

ABOUT THE AUTHOR

Scott Plumptree is Media Manager at Interlock Roofing, part of The Interlock Group — North America’s pioneer in lifetime aluminum roofing systems. With 30+ years in integrated marketing and digital strategy, Scott leads the team responsible for helping homeowners research, compare, and confidently choose a permanent metal roof. He oversees Interlock’s editorial, SEO, and AI search visibility, ensuring every page answers real homeowner questions about durability, warranties, and long-term value.

Email: scott@interlockgroup.com — Please contact me directly if you have any questions :)

Linkedin: https://www.linkedin.com/in/plumptree/

Last modified: May 26, 2026 9:58 am