Aluminum Roofing Systems
Interlock® Metal Cedar Shingle Roofing: Lifetime Aluminum, Rot-Free Cedar Look
Interlock cedar shingle roofing delivers the warm, dimensional look of real cedar without rot, splitting, or fire risk — backed by a Lifetime Transferable Warranty.
Discover Interlock Metal Cedar Shingle Roofing — engineered to last the lifetime of your home with zero maintenance and a Lifetime Transferable Warranty.
Product overview
At a glance
Interlock® Metal Cedar Shingle Roofing replicates the dimensionality and shadow lines of hand-split wood cedar in a 0.019" 3105-H24 aluminum panel at ~41 lbs per square — eliminating cedar's rot, splitting, moss, and Class C fire-risk failure modes. UL 2218 Class 4 hail, ASTM E108 Class A fire-rated assembly available, 120 mph warranted wind, AAMA 2605 Alunar® PVDF coating, ICC-ES ESR-1790.
Overview
What Is Metal Cedar Shingle Roofing?
Interlock® Metal Cedar Shingle Roofing replicates the dimensionality and shadow lines of hand-split wood cedar in a 0.019" 3105-H24 aluminum panel at approximately 41 lbs per square — with no splitting, warping, moss treatment, or fire retardant maintenance cycle. Finished with the Alunar® Coating System and carrying a 30-year coating warranty, it is rated Class 4 under UL 2218, warranted to 120 mph wind resistance, and backed by the Guardian Lifetime Limited Non-Prorated Material Warranty. Certifications include ICC-ES ESR-1790, Florida Product Approval FL7263, and CCMC 10475-R.
Natural cedar shingles carry a service life of 20–30 years — compressed by UV degradation, moisture cycling, moss growth, and the fire risk inherent to organic roofing. Interlock Metal Cedar Shingle eliminates every failure mode: the aluminum substrate will not absorb moisture, support biological growth, or propagate flame. The 17⅝" × 9" panel installs on slopes of 3:12 or greater with ice and water protection, with a full color-matched trim suite requiring no field-fabricated flashing. Cool Roof rated by CRRC and ORNL, it delivers the curb appeal of cedar with a performance envelope wood cannot match.
Why Homeowners Choose Metal Cedar Shingle Roofing Over Asphalt
Where Class 4 impact ratings qualify for insurance premium reductions, annual savings compound across the full warranty period — a recurring financial return most roofing products cannot claim. The transferable Guardian Warranty documents itself in any real estate transaction, distinguishing the property in markets where buyers scrutinize roof age and remaining useful life. Each installation eliminates two to three cedar or asphalt replacement cycles from the landfill. For homeowners who refuse to compromise on aesthetics or performance, Interlock Metal Cedar Shingle is the definitive answer — the look of cedar, the permanence of metal.
Table of Contents
- What Is Metal Cedar Shingle Roofing?
- Metal Cedar Shingle Roofing for Every Professional
- The Interlock Metal Cedar Shingle Roofing Advantage
- The Alunar® Coating System
- Why a 48-Year Metal Roofing Coatings Veteran Endorses Interlock®
- Product Specifications
- Color Options
- Metal Cedar Shingle Roofing vs. Asphalt Shingles vs. Real Cedar Shingles
- Sustainability & Energy Efficiency
- What Homeowners Say About Interlock Metal Roofing
- Metal Cedar Shingle Roofing — Frequently Asked Questions
- Key Takeaways
Who It's For
Metal Cedar Shingle Roofing for Every Professional
Interlock Metal Cedar Shingle Roofing gives your home the warm, dimensional character of hand-split cedar — permanently. Where real cedar fades, splits, and requires staining or replacement within 15–20 years, Interlock aluminum panels hold their form and color for a lifetime. Finished with the Alunar® 5-layer fluorocarbon coating system, each panel resists UV fading, moisture infiltration, and hail impact up to 2 inches in diameter (UL 2218 Class 4). Your home is warranted against winds up to 120 mph — all backed by the Guardian Lifetime Limited Non-Prorated Material Warranty. Install it once. Forget it exists. That's the Interlock promise: permanent protection in a profile that makes your home look exactly the way you envisioned it — for the rest of your life.
Get Your Free Quote →Interlock Metal Cedar Shingle is specified under CSI MasterFormat Section 07 31 16 (Metal Shingles). The 0.019-inch aluminum alloy 3105-H24 panel (ASTM B209) installs at approximately 40–50 lbs per square, meeting standard residential structural load requirements without modification. Panel dimensions: 17⅝" × 9" face. The Alunar® 5-layer fluorocarbon coating system delivers PVDF-grade durability per ASTM D-4214-07 (chalk) and ASTM D-2244-16 (color). Cool Roof performance is CRRC- and ORNL-confirmed. ICC-ES Evaluation Report ESR-1790 and Florida Product Approval FL7263-R7 (NON-HVHZ) apply. Minimum slope: 3:12 with ice-and-water underlayment; 5:12 with standard underlayment. Class A fire rating available per ESR-1790 §4.4 with GAF Versashield per ESR-2053. UL 2218 Class 4 impact resistance. Wind warranted to 120 mph under the Guardian Lifetime Limited Non-Prorated Warranty. 30-year coating warranty. One-time transferable.
Download Spec Sheet →Interlock Metal Cedar Shingle installs over standard OSB or plywood decking with no specialized equipment. The 17⅝" × 9" aluminum panel interlocks along all four edges, creating a weather-sealed assembly that self-aligns during installation. Panel weight of approximately 40–50 lbs per square minimizes crew fatigue on large projects and eliminates structural pre-loading concerns. The Alunar® coated aluminum surface requires no special handling beyond standard sheet metal protocols. Minimum slope: 3:12 with ice-and-water barrier; 5:12 with standard underlayment. No caulking, no sealants, no recoating — on installation day or any day after. Interlock Cedar Shingle carries ICC-ES ESR-1790 for code-compliant installation in applicable jurisdictions. All installation documentation, underlayment specifications, and fastening schedules are provided in Interlock's certified installation manual.
Become a Certified Installer →Key Advantages
The Interlock Metal Cedar Shingle Roofing Advantage
Lifetime Transferable Warranty
Every Interlock installation is backed by a Lifetime Transferable Warranty — the strongest warranty in the roofing industry. Coverage can be transferred one time to the next owner (a $300 transfer fee applies), adding documented value at resale.
Explore now >Class 4 Impact Resistance
Achieves the highest UL 2218 impact rating — Class 4 — verified by the standard's most demanding 2-inch steel-ball impact test. Many insurers offer premium discounts for Class 4 rated roofing.
Explore now >Class A Fire Resistance available
Class A fire rating available under ASTM E108 — the highest fire resistance classification, subject to proper underlayment and installation. Superior protection compared to asphalt shingles and untreated wood profiles.
Explore now >120 MPH Wind Resistance
Interlock's concealed clip-fastening system locks every panel to the roof deck and to the panels around it, with no exposed fasteners that can loosen or back out over time. The system is warranted against wind uplift to 120 mph and tested to ASTM D3161 Class F, while the interlocking design lets panels expand and contract with temperature swings without breaking the weather seal — so the roof is built to stay secure through the high winds and seasonal storms common across North American climates.
Explore now >Energy-Efficient Aluminum
Aluminum reflects solar radiation and releases heat rapidly at night, reducing cooling loads and summer energy costs compared to dark asphalt roofing materials.
Explore now >Low Lifetime Maintenance
No painting, sealing, granule replacement, or re-nailing — ever. Occasional debris rinsing is all that is required. Eliminate roof maintenance from your budget permanently.
Explore now >AAMA 2605 Certified Coating System
The Alunar® Coating System
Every Interlock Metal Cedar Shingle panel is factory-finished with the proprietary Alunar® Coating System — a 5-stage molecular bonding process engineered to the most demanding performance standards for architectural coatings in North America. At its core, Alunar uses a 70% polyvinylidene fluoride (PVDF) fluoropolymer resin system — the same chemistry trusted by monumental and commercial building projects across the continent. Unlike painted steel or granule-coated asphalt products, PVDF fluoropolymer chemistry does not fade, chalk, peel, or blister. Color stability is independently verified to ASTM D-4214-07 (chalk resistance) and ASTM D-2244-16 (color retention) — requiring less than 5 Delta E units of color change after a decade of continuous UV exposure. Your roof's color is not applied to the surface — it is bonded into it. That is the difference between a finish that lasts 20 years and one that lasts a lifetime.
Industry Expert Testimonial
Why a 48-Year Metal Roofing Coatings Veteran Endorses Interlock®
“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.”
Robert Scichili
Robert Scichili Associates, Inc.
Technical Data
Product Specifications
| Specification | Details |
|---|---|
| Base Material & Alloy Specification | Aluminum alloy 3105-H24 per ASTM B209 |
| Panel Gauge & Nominal Base Thickness | 0.019" (0.483 mm) nominal base thickness |
| Installed Weight Per Square | Approx. 41 lbs per 100 sq ft (0.41 psf installed) |
| Hail Impact Resistance Rating | Class 4 — UL 2218 |
| Fire Resistance Rating | Class A fire rating available (requires GAF Versashield Fire-Resistant Roof Deck Protection per ICC-ES ESR-2053; self-adhered underlayment = non-classified assembly) |
| Wind Speed Resistance — Manufacturer Warranted | 120 mph (193 kph) — warranted per manufacturer's installation procedures |
| Surface Coating System & Finish Warranty | Alunar® Coating System — 5-layer fluorocarbon finish; 30-year coating warranty (no chalk >8 ASTM D-4214-07; no color change >5 ΔE ASTM D-2244-16) |
| Panel Size, Weather Exposure & Coverage Geometry | 17⅝" wide × 9" weather exposure per course |
| Material Warranty Program Name | Guardian Lifetime Limited Material Warranty — one-time transferable |
| Warranty Duration, Ownership Terms & Transferability | Lifetime for original registered owner (individual); 50 years from Substantial Completion for organizations or upon transfer to 2nd owner ($300 transfer fee) |
| Recycled Content & End-of-Life Recyclability | Aluminum is 100% recyclable at end of life |
| Cool Roof Energy Rating & Third-Party Certification | Cool Roof rated — CRRC (Cool Roof Rating Council) and ORNL (Oak Ridge National Laboratories) tested |
| CSI MasterFormat Division & Section Reference | 07 31 16 — Metal Shingles |
Available Colors
Color Options
Interlock Metal Cedar Shingle is available in eight architect-curated colors in heavy gauge aluminum — each permanently bonded through the Alunar® PVDF fluoropolymer coating system, certified to AAMA 2605, the most demanding color performance standard in North American architecture. Unlike paint-over-steel or granule-coated products that fade, chalk, or shed over time, Alunar's 70% PVDF resin chemistry is backed by a 30-year color warranty — guaranteeing chalk resistance no worse than a numerical rating of 8 per ASTM D-4214 and color change no greater than 5 Hunter ΔE units per ASTM D-2244. That is not a marketing claim — it is a measured, testable, warranted performance threshold. For projects demanding the ultimate in prestige and material authenticity, Interlock Metal Cedar Shingle is also available in solid copper — a ninth option that develops a natural living patina unique to every installation. Whether you select a factory-finished aluminum color or the timeless warmth of solid copper, every panel is backed by Interlock's Lifetime Transferable Warranty. Contact your local Interlock dealer to request a physical color sample and full specification sheet.
Material Comparison
Metal Cedar Shingle Roofing vs. Asphalt Shingles vs. Real Cedar Shingles
How does Interlock Metal Cedar Shingle Roofing compare on the metrics that matter most? Review the key performance differences below.
| Interlock Metal Cedar Shingle Roofing | Asphalt Shingles | Real Cedar Shingles | |
|---|---|---|---|
| Lifespan | Lifetime (50+ years) | 15-25 years | 20-40 years |
| Weight | 40-50 lbs/square | 250-350 lbs/square | 200-350 lbs/square |
| Fire Rating | Class A | Class A (with mat) | Class C (untreated) |
| Warranty | Lifetime Transferable | 20-30 year limited | Limited or none |
| Maintenance | Low maintenance | Periodic inspection | Regular maintenance |
Real Installations
Interlock Metal Cedar Shingle Roofing — Project Gallery
Interlock Metal Cedar Shingle captures the warm, dimensional look of natural cedar without the rot, splitting, fire risk, or ongoing maintenance that wood roofing demands. Each aluminum shingle is protected by the Alunar® Coating System — a 70% PVDF formula with ceramic IR reflective pigmentation — available in nine colors including Tudor Brown, Colonial Brown, Hunter Green, and Musket Grey, each warranted against fading and chalking for a minimum of 30 years. Explore installations across Canada and the United States to see how Interlock Metal Cedar Shingle complements craftsman, heritage, and cottage-style architecture, backed by the Guardian Lifetime Limited 50-Year Transferable Warranty.
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (After)
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (Front elevation)
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (Front elevation)
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (Street view)
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (Street view)
Interlock Aluminum Cedar Shingle Metal Roofing – Hunter Green | Sylvan Lake, AB (Aerial front)
Interlock Aluminum Cedar Shingle Metal Roofing – Tile Red | Anchorage, AK (Full roof overview)
Interlock Aluminum Cedar Shingle Metal Roofing – Tile Red | Anchorage, AK (Full roof overview)Environmental Performance
Sustainability & Energy Efficiency
Interlock Metal Cedar Shingle delivers the aesthetic of natural cedar without the ecological cost of harvesting old-growth timber. Manufactured from aluminum — one of the most sustainable structural materials available — panels are 100% recyclable at end of life with no material quality degradation and contain a high percentage of post-industrial recycled content. Its permanent service life eliminates the repeated manufacturing, transport, and landfill burden of real cedar replacement. Cool Roof certification from CRRC and ORNL confirms measurable energy efficiency benefits. For architects and homeowners committed to responsible material selection, Interlock Metal Cedar Shingle is the verifiable sustainable alternative.
- High recycled aluminum content
- Reflects solar radiation — reduces cooling loads
- 100% recyclable at end of life
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.
FAQ
Metal Cedar Shingle Roofing — Frequently Asked Questions
Everything you need to know about Interlock Metal Cedar Shingle Roofing — for homeowners, architects, and contractors.
How long does metal cedar shingle roofing last?
Interlock Metal Cedar Shingle Roofing is backed by a Lifetime Transferable Warranty, designed to outlast the structure it covers. Unlike asphalt shingles that require replacement every 15-25 years, Interlock aluminum panels resist corrosion, impact, and freeze-thaw cycling without degrading.
How much does metal cedar shingle roofing cost?
Interlock Metal Cedar Shingle Roofing costs more upfront than asphalt or real wood cedar, reflecting lifetime performance. When measured over 50 years, Interlock eliminates 3–5 asphalt replacement cycles and the ongoing maintenance costs of real cedar — staining, treating, and eventual full tear-off. Exact pricing depends on roof complexity, regional labor rates, and underlayment requirements. Contact an authorized Interlock installer for a project-specific quote. Most homeowners recoup the cost differential within 10–15 years through eliminated replacements and maintenance savings alone.
Is metal cedar shingle roofing energy efficient?
Yes. Interlock aluminum panels reflect solar radiation and release absorbed heat rapidly after sunset, reducing attic temperatures and HVAC cooling loads compared to dark asphalt shingles. Most homeowners report measurable reductions in summer cooling costs.
What maintenance does metal cedar shingle roofing require?
Virtually none. No painting, sealing, re-granulating, or re-nailing is ever required. Occasional rinsing to remove debris from valleys is all that is typically needed. Interlock eliminates roof maintenance from your annual budget.
How heavy is metal cedar shingle roofing?
Interlock aluminum panels weigh approximately 40-50 lbs per square (100 sq ft). This is a fraction of the weight of concrete tile (900+ lbs/sq) and natural slate (800-1,500 lbs/sq), making Interlock suitable for virtually any standard residential roof structure without structural reinforcement.
Can Interlock roofing be installed over my existing roof?
In many cases, yes — Interlock aluminum roofing can be installed over existing asphalt shingles without full tear-off, depending on local building codes, deck condition, and current roof layer count. Your authorized Interlock installer will conduct a decking inspection to confirm eligibility. Installing over existing roofing eliminates tear-off labor and disposal costs, reducing overall project expense. Where tear-off is required — due to soft decking, rot, or code restrictions on roof layers — Interlock installers manage the full removal process. Either way, the result is a permanent roofing system that will never need to be removed or replaced.
Does Interlock roofing qualify for home insurance discounts?
Yes — in many regions, Interlock aluminum roofing's UL 2218 Class 4 hail impact rating and 120 mph warranted wind resistance qualify homeowners for significant insurance premium reductions. Discount amounts vary by insurance carrier and jurisdiction, but Class 4 impact-rated roofing consistently triggers meaningful savings in hail-prone markets across North America. Contact your insurance provider to confirm available discounts before installation. Many homeowners find that insurance savings offset a meaningful portion of the installation cost premium within the first 10–15 years of ownership.
What colors is Interlock Metal Cedar Shingle available in?
Interlock Metal Cedar Shingle Roofing is available in nine standard colors: Solid Copper, Copper Penny, Hunter Green, Black, Deep Charcoal, Musket Grey, Tile Red, Colonial Brown, and Tudor Brown. All colors are finished with the Alunar® 5-layer fluorocarbon coating system, providing PVDF-grade color stability backed by a 30-year coating warranty per ASTM D-4214-07 and ASTM D-2244-16. Colors complement a full range of architectural styles and exterior palettes. Contact your authorized Interlock installer or visit the Interlock color selector to view samples in your regional lighting conditions before finalizing your selection.
Is Interlock Metal Cedar Shingle fire rated?
Yes. Interlock Metal Cedar Shingle panels are available in a Class A fire-rated assembly — the highest rating achievable under UL and ICC standards. Class A requires installation with GAF Versashield fire-resistant underlayment per ICC-ES Evaluation Report ESR-2053, in combination with the Interlock panel system per ESR-1790. Note: installation with self-adhered underlayment results in a non-classified fire assembly. Specify GAF Versashield when Class A fire rating is required by code or insurance. Confirm your underlayment specification with your authorized installer before project commencement.
Can the Interlock warranty be transferred to a new owner?
Yes. The Guardian Lifetime Limited Non-Prorated Material Warranty is transferable once to a subsequent owner. Original individual owners hold a lifetime warranty; organizations and subsequent individual owners hold a 50-year non-prorated warranty. A transfer fee of $300 applies, and transfer must be registered with Interlock Roofing within the required notification period. A documented Interlock roofing system with an active warranty adds measurable, verifiable value in real estate transactions. Contact Interlock Roofing directly to initiate the transfer process.
At a Glance
Key Takeaways
- Cedar shingle aesthetic in aluminum — no rot, no splitting, no moss treatment, no organic-roofing fire risk.
- 0.019" 3105-H24 aluminum alloy per ASTM B209; 17⅝" × 9" face, 9" weather exposure.
- ~41 lbs per square — fraction of real cedar's 200–350 lbs/sq waterlogged weight.
- Real cedar shingle: 20–30 year service life. Interlock cedar-look aluminum: lifetime warranted.
- UL 2218 Class 4 hail; Class A fire assembly available with GAF Versashield per ESR-2053 (vs cedar's Class C untreated).
- AAMA 2605 Alunar® PVDF coating — 30-year chalk/fade warranty; Cool Roof rated by CRRC + ORNL.
- ICC-ES ESR-1790, FL7263-R7, CCMC 10475-R; CSI MasterFormat 07 31 16 (Metal Shingles).
| 41 LBS / SQ installed | CLASS A fire (vs cedar Class C) | 120 MPH warranted wind | 30-YEAR coating warranty |
Documentation
Downloads & Specification Resources
Explore More
Explore Other Interlock Roofing Profiles
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Interlock® Metal Slate Roofing is a lifetime aluminum system that captures the dimensional beauty of natural slate — ideal for Colonial and Victorian homes — without the weight, cracking, or reinforcement costs of stone. Rust-proof, Alunar®-coated for energy savings, and backed by a transferable Lifetime Limited Warranty.
Interlock® Metal Shake Roofing
Interlock® Metal Shake Roofing recreates the deep, hand-split texture of rustic cedar shake in rust-proof aluminum — rugged character for Cape Cod and Craftsman homes without the warping, rot, or fire risk of wood. Alunar®-coated and backed by a transferable Lifetime Limited Warranty.
Interlock® Metal Tile Roofing
Interlock® Metal Tile Roofing brings the elegance of Mediterranean clay tile to homes that can't bear — or pay to reinforce for — real tile's weight. Lightweight, rust-proof aluminum that resists cracking, hail, and fire; Alunar®-coated and backed by a transferable Lifetime Limited Warranty.
Interlock® Metal Standing Seam Roofing
Interlock® Metal Standing Seam Roofing is a mechanical-lock aluminum panel system with clean vertical lines — the signature look of modern and farmhouse architecture. Concealed fasteners, exceptional wind resistance, rust-proof, solar-compatible, and backed by a transferable Lifetime Limited Warranty.
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Interlock® Copper Roofing is the solid-copper tier of Interlock's system, available in all five profiles in 12, 16, and 20 oz copper. A living material, it weathers from bright metallic through bronze to a distinctive verdigris patina — copper's timeless prestige for luxury and heritage homes, backed by a transferable Lifetime Limited Warranty.
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