Metal Roofing in Near South Side, Illinois — Lifetime Interlock® Aluminum Shingles Installed Locally

Near South Side Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 2001

Metal Roofing Built for Near South Side's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection

Interlock Metal Roofing, founded May 17, 2001, is a trusted metal roofing contractor and exclusive authorized installer of Interlock® Lifetime Aluminum Roofing Systems serving homeowners in Near South Side, Illinois and Cook County. As your local metal roof installer Near South Side, we deliver heavy‑gauge, fire‑resistant, energy‑efficient cool roofs engineered for performance, beauty, and durability—designed to shed Chicago’s heavy snow and ice, resist freeze‑thaw cycles and high lakefront winds, withstand intense summer heat and UV exposure, and reduce cooling costs. We provide roof replacement and re‑roofing throughout Near South Side with timeless slate, cedar shingle, shake, Mediterranean tile, or standing seam looks combined with the strength of metal; every roof is protected by the Alunar® Coating System and backed by a Lifetime Warranty for lasting protection and peace of mind.

Interlock metal roofing styles including slate, cedar, shake, tile, and standing seam in Near South Side, Illinois

Performance you can measure (all climates)

Weather Resistant

Tested to 193+ km/h (120 mph) winds

Durable

Lifetime-Limited, transferable warranty

Energy Efficient

Reflective cool-roof lowers cooling costs

Freeze–Thaw Durable

Endures ~69 freeze–thaw days a year

Rain & Moisture Proof

Repels ~1024 mm of rain a year

Impact Resistant

UL 2218 Class 4 — top hail rating

  • Authorized installer of Interlock® Lifetime Aluminum Roofing Systems serving Near South Side homeowners
  • Panels are coated with the Alunar® Coating System (no visible aluminum surface) to provide durable color retention and corrosion resistance
  • Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
  • Interlocking panel system tested to 193+ km/h (120+ mph) for severe windstorms common along the Lake Michigan corridor and Near South Side exposures
  • Designed to shed snow and manage rooftop loads to reduce accumulation on Near South Side rooflines
  • Resists degradation from repeated freeze–thaw cycles typical of Cook County winters
  • Built to handle rapid lake-effect snow accumulation during Near South Side winter storms without compromising panel integrity
  • Engineered to withstand corrosion from winter road salt and occasional lake-spray near Near South Side shoreline properties
  • Smooth Alunar® finish and rapid drainage limit organic buildup (moss and algae) on shaded Near South Side roofs
  • Class A fire-rated available for urban fire-safety and ember-resistance considerations
  • UL 2218 Class 4 impact resistance against hail, falling branches, and storm debris
  • Cool-roof performance helps reduce heat gain during Midwest heat waves and improves attic comfort for Near South Side residences
  • Solar-compatible design accommodates standard bracket-mounted photovoltaic systems for rooftop solar in Cook County homes
  • Architectural profiles replicate slate, cedar shake, and tile while offering standing-seam options—combining Near South Side curb appeal with fully recyclable aluminum construction
  • Backed by a Lifetime-Limited transferable warranty to protect long-term value and resale confidence in Near South Side properties

Interlock Industries (Midwest) Inc.

Hours

  • Monday9:00 AM – 5:00 PM
  • Tuesday9:00 AM – 5:00 PM
  • Wednesday9:00 AM – 5:00 PM
  • Thursday9:00 AM – 5:00 PM
  • Friday9:00 AM – 5:00 PM
  • SaturdayClosed
  • SundayClosed

Interlock Metal Roofing Chicago is a trusted metal roofing contractor proudly serving homeowners and businesses throughout the greater Chicago metropolitan area. Backed by decades of manufacturing and installation expertise, Interlock has earned a reputation for exceptional craftsmanship, long-term reliability, and outstanding customer care. As a specialized installer of premium aluminum and standing seam metal roofing systems, Interlock Metal Roofing Chicago provides exclusive lifetime roofing products engineered to perform in Illinois’ demanding climate — from heavy snow and ice buildup to high winds, hail, summer heat, and dramatic seasonal weather shifts. Built on integrity, professionalism, and superior workmanship, Interlock Metal Roofing has completed thousands of successful roofing installations across North America, helping Chicago-area property owners invest in roofing systems that are both beautiful and built to endure. Our team is known for transparent communication, efficient project execution, and meticulous installation standards, supported by industry-leading materials and comprehensive warranty protection. Interlock’s commitment to excellence is reflected in its dedication to safety, continuous installer training, and strong customer satisfaction throughout the region. With highly trained crews and strict adherence to best practices, we deliver durable, energy-efficient roofing solutions that enhance curb appeal, increase property value, and provide decades of dependable protection against Chicagoland’s harsh winters and severe storm conditions. Whether you need a residential metal roof replacement, a commercial roofing upgrade, or a custom architectural metal roofing system, Interlock Metal Roofing Chicago is the trusted choice for premium lifetime metal roofing — combining proven expertise, exclusive products, and service you can count on.

Part of the Interlock® certified installer network →

Get a Free Metal Roof Estimate in Near South Side, Illinois

Interlock® Aluminum Roofing — all-climates performance specs for Near South Side, Illinois

Spec / RatingClimate / Risk Factor + What It Solves
Wind resistance: 120+ mph (193+ kph)Extreme wind, hurricanes, storm uplift: full interlocking attachment helps prevent blow-offs, edge lifting, and panel loss in high-gust events.
Fire rating: Class A (with proper assembly)Wildfire, embers, radiant heat, chimney sparks: non-combustible roof assembly provides the highest residential fire protection rating.
Hail resistance: UL 2218 Class 4Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes.
Snow & ice performance: interlocking, shedding profileHeavy snow, freeze-thaw, ice dams: smooth aluminum sheds snow efficiently and the interlocking design helps block water intrusion when melt-refreeze cycles occur. (Final snow-load capacity depends on roof structure and local code.)
Corrosion resistance: aluminum (won’t rust)Salt air, coastal humidity, wet climates: aluminum naturally resists rust and corrosion, reducing long-term failure risk in marine or high-moisture environments.
Heat / UV durability: baked-on coating systemHigh heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation.
Moss / algae resistance: smooth coated surfaceWet shade, organic growth: low-porosity metal surface gives moss/algae less to grip, reducing staining and maintenance.
Material: heavy-gauge aluminum roof profiles (Slate / Shake / Shingle / Tile / Standing Seam)All-season structural stability: lightweight, dent-resistant metal system stays stable through large hot-cold swings and severe weather.
Expected lifespan: 50+ yearsLong-term durability across climates: avoids re-roof cycles typical of shorter-life materials, even in high-stress environments.
Warranty: Lifetime-Limited, non-prorated + 50-year transferableLifetime protection + resale value: guarantees long-term material confidence and transfers to future owners.

Available Profiles in Near South Side, Illinois:

What our customers are saying:

★★★★★
Review: April 12, 2026 Completion: May 30, 2016

We had our roofed replaced by Interlock Roofing in 2016. One of the best decisions we’ve ever made! Our roof looks like slate shingles but is entirely metal. We e received many compliments on it over the years Recently we had a lot of strong wind and hailstorms and our representative, John Mondeshean, checked in with us to see if we sustained any roof damage. He came out and inspected our roof for us within a day or two. Luckily we didn’t have any damage. I’ve been impressed by this company and their product from day one. John is the consummate professional. Our roof is now 10 years old and I still say it was the best investment! Highly recommend!

★★★★★
Review: April 3, 2025 Completion: July 31, 2024

Very heavy investment, but worth every cent! I worked with John and he was very mindful in planning everything out- especially the finer details of what was needed for the house and for the project. His crew was spectacular in their workmanship and friendliness. The only minor issue I had was the scheduling of the project- which is of nobody's fault. Things get done when they get done and those who are waiting, will be happy they waited. Not exaggerating, many customers will be quite pleased with the end result. I'm one of them. Many thanks, John, crew & Interlock!

★★★★★
Review: June 10, 2024 Completion: May 22, 2024

Not only was the sales process easy, the installation guys were very respectful of my neighbors and my comfort while they were working. Now that it’s done I absolutely love the roof. It’s already made a huge difference in my electric use for cooling the house!

★★★★★
Review: May 8, 2024 Completion: April 29, 2024

We are so proud of our new roof. It is so cool looking, it adds a great deal to the curb-appeal of our house. I also appreciate the security of knowing I'll never have to replace it or worry about it in even the strongest winds. I used to lose shingles in strong windstorms. Interlock was easy to work with. The workers were very respectful of my property and were meticulous about clean up after.

★★★★★
Review: August 15, 2023 Completion: July 31, 2023

John M. was the third roofing sales consultant I talked to, and I had two more scheduled. After listening to John explain all the advantages of the InterLock System and materials, I was 95% sold but I thought it might be a little out of my price range. I was going to wait and hear from the other two roofers before I made my decision. John asked me what it would take for me to make my decision right then. I told him, and he made me an offer I couldn't refuse. I cancelled the other two sales rep. meetings. Boy am I glad I did. Considering the amount of man hours put into the installation, I got a bargain! Jessie's team worked from 8AM to 7PM for a total of 8 days to complete the installation during July 2023 ( the hottest July ever recorded ). I don't know how they did it! Jessie answered all my questions during construction, and kept me informed of what would happen next. Some of the asphalt shingles on parts of the roof with a low slope had to be scraped off. The majority of the roof had a steeper slope, and the new metal roof could be installed directly on top. People had warned me that metal roofs were noisy during rain or hail events. Not true! The shingles and underlayment have actually muffled the sounds that I would hear coming from my old asphalt shingle roof. The ice and water shields that were on my existing chimneys and vents were extended farther up each one. Some of the vertical siding was temporarily removed and put back so new ice and water shield could be placed on top of the water and ice shield that was already there. I'm 70 years old so the lifetime guarantee may not mean much, but the ability to transfer to the next owner 50 more years of protection is huge! My wife and I are very satisfied with the quality of materials, and the outstanding installation work done by Jessie and his team. It's too bad that the rating companies only allow a 5 star rating for the best and most outstanding companies. A company like InterLock should get at least 10 stars.

★★★★★
Review: November 28, 2022 Completion: November 23, 2022

Interlock Metal Roofing is an amazing company to do business with. My salesperson John was professional and knowledgeable. It is a big investment, but absolutely worth it. The installation crew was on time, hardworking and conscientious. I highly recommend this company to anyone who wants a roof to last 100 years!

★★★★★
Review: March 3, 2022 Completion: November 10, 2021

The Interlock team was a pleasure to work with from beginning to end. Undertaking the re-roof of a 108-year-old home is a major process and investment. After speaking to many other roofers, we realized that Interlock offered the best value proposition, and we felt like they were going to be able to deliver on what they promised. Our salesperson, John Mondschean displayed his extensive experience in roofing by taking the time to listen to our goals, preferences and concerns, offering solutions and working with us to achieve the desired outcome. John was responsive to every request and stuck with us even after the contract was signed. We appreciated that he was always available to answer questions, give us updates and even bring color samples over one afternoon for us to double-check our selection. John embodies integrity and service. We were aware that due to current market conditions, we might have to wait a while for our materials to be delivered; however, Interlock exceeded our expectations and was able to get the materials to us a touch earlier than promised and started the installation within three days after delivery. The day the materials were delivered, we met Jesse, the lead installer who we worked with throughout the project. Jesse was awesome in explaining all the steps to the re-roof and answering our questions along the way. He took lots of pictures for us and explained how he would address our specific concerns like adding ventilation, condition of the chimney, placement of snow guards and ensuring that the construction didn’t negatively impact our neighbors. It was clear that Jesse has been installing Interlock roofing for a long time and is a true craftsman who takes pride in the quality of his work. Jesse and his crew went above and beyond to ensure that our neighbors landscaping, A/C units and other areas were properly protected. They also ensured that our property was well protected throughout, cleaned up every day and that they left the job site in great condition once the work was finished. We give the crew excellent ratings for the overall job they did on our new roof. We are very happy with the new roof and have recommended Interlock Roofing to several of our friends and neighbors. It is awesome to have everyone on the block comment on how nice the new roof looks. It really has improved our home’s durability, value and curb appeal. We would work with John, Jesse and the entire team again! They delivered on what they promised!

★★★★★
Review: March 16, 2021 Completion: September 9, 2020

Last summer I realized I was in the need of a new roof on my old home which was built in 1876. I was hoping I could find a roof that accentuated the uniqueness and beauty of my old farm-style house. I always dreamed of owning a home with a metal roof, so I thought, well, let’s give this a look and see if it is an option. After searching for roofers and making some calls I found no one in my area offering metal roofs, needless to say, I became discouraged. Then, one day, on Facebook, I happened to see an ad with Midwest Roofing/Interlock Roofing showing the exact type of roof I was looking for!! I was so excited and called the number and was able to have an appointment arranged that very weekend. John came out, did some measuring, got up in my attic, then we sat and had a long, very informative discussion. John was extremely patient with my numerous questions and was able to explain things to me in layman’s terms, as I am not adept in the construction business, at all. So, the nitty gritty…I was originally thinking standing seam going into this whole project but then out came the slate look and oh my, that was it…The roof I had been looking for. It was exactly what needed to be on top of my house!!! And the black color just spoke to me…. John agreed!! Nowhere else had I ever seen a roof like the one I was about to have put on my beloved home. So, the price, while I knew a metal roof was going to cost more, I was looking more for security and peace of mind. I am a single parent of a child on the autism spectrum. I knew that I did not want to deal with roof issues in the future, the struggle to get a roofer to come to fix their problem, and the thought of having to replace it all over again just a few years down the road. Nope, the extra cost of this one-and-done roof was well worth it to me…after all, how do you put a price tag on peace of mind? And there aren’t many things in this world nowadays that can give you that. So, I signed the contract… The delivery…. how exciting…all these boxes lined up in my driveway…it was getting real!! Installation begins. Never in my lifetime have I met such an amazing installation crew, headed by Jesse. These guys worked tirelessly on transforming my average-looking home into the WOW home on the block. They took great care in working around my cupola and rock chimney, making sure everything was sealed where it needed to be, even reinforcing the cupola as it had been up there for so many years. These guys are not just installers, they are truly artists, and the pride in what they do shines in their workmanship. Even the care in the cleanup was amazing…very impressed. Any company can put out an amazing product, but for that product to remain amazing, that company has to have professional team members working with the customers…that is what you will get if you go with Interlock. Not just a stand-out product but a stand-out crew from sales, scheduling, and installation…it’s the whole package.

★★★★★
Review: August 13, 2020

The investment we made in a new aluminum slate style shingle roof was much more than we wanted to spend, but when we analyzed the pros and cons, including the cost, it came out ahead. We wanted to upgrade our 100-year-old Chicago bungalow and, in particular, rejuvenate the attic and basement spaces. We also want to install a solar panel array on the roof while the current incentives with the IRS, the state and the utility net metering system are still in effect. We wanted to reduce the massive composite shingle tonnage that is covering the incredible sea of roofs across the land. This is undoubtedly a rather large carbon footprint and the short lifespan of many roofs (10-15 years) are causing us to fill and foul unsustainable dumpsites. The weight of our aluminum roof is less than 850 lbs., compared to 3-4 tons of architectural composite shingles. The Interlock roof is a lifetime roof warrantied for 50 years. When/if it is ever replaced, it will be completely recycle-able. Much of the heat captured by composite shingle roofs is reflected by the aluminum. Previously, our attic could reach temperatures near 130°F. We have seen a significant reduction in afternoon attic temps, 10-20 degrees. The installers, Jesse, Sal and Ben were very professional, safe and kind to us. They took the extra time to do it right and solve problems rather than take an easier route. They maintained social distancing and wore masks when necessary. They screwed down OSB sheathing on the existing 100-year-old deck boards which are stamped Sterling Lumber and Supply Co. "The Yards with the Stock". This company was located two blocks from our house in the early 1900s. Interlock continues a tradition from Sterling Lumber to build to last a lifetime. The original 1919 roof rafters were 2"x4"x16' and held up under numerous Chicago blizzards and storms. Prior to the project, we augmented the rafters with 2"x6"x16' #1 southern yellow pine. Hopefully, the roof will bear another century of Chicago climate change. The Interlock Industries' workers installed 95 snow guards to breakup snow slides off the roof. The roof is very attractive and my neighbors have complemented the looks of it. The siding on the dormers were also replaced with the aluminum shingles. We had a choice of several shingle " data-wpil-keyword-link="linked">colors and chose one called gunflint. The shingles have a " data-wpil-keyword-link="linked">slate-like surface that is embossed on the aluminum to give it a textured appearance and perhaps breakup wind and water flows. The Interlock installers removed and sheathed over the chimney and vent caps and added a ridge vent. They installed soffit vents which apparently were never a feature of the house. They removed the gutters and reinstalled them in order to fit the drip edge flashing and lock down the shingles. Everything is fastened with screws powered by cordless screw guns. They did not use air compressors. They had safety lanyards attached to the ridge and foot boards around the perimeter of the roof throughout the installation. We are very satisfied with the look of our new roof and ready to install solar panels which won't have to be removed to re-roof because the roof will probably last longer than the solar panels. We are not young anymore and the long-term value of this project will most likely benefit others and the neighborhood more than us, but for the time being, we are happy customers.

★★★★★
Review: January 27, 2020

My wife recently purchased our home, and we were aware that the roof was getting close to end of life. We researched a few different options and came across Interlock Metal Roof. After meeting with John from InterLock, it became clear to us that a metal roof was the best option for our needs. We plan to live in our home for 30+ years, and while a metal roof is more expensive than a traditional roof, it will be more than worth it over that period of time. We will never have to replace our roof again! It was also great to know that the roof could be installed over the existing shingles, reducing both the mess of the project and the waste created by the old shingles. Jesse and his crew did a great job installing the new roof, and we could not be happier with both the look and the quality of the aluminum shingles. We would recommend InterLock to anyone considering replacing their roof.

★★★★★
Review: November 7, 2019 Completion: August 20, 2019

Dear John, We were in the market and knew we wanted a metal roof. I came across Interlock while doing some research and contacted them immediately. While it is on the pricey side, knowing that this roof will last a lifetime is very comforting. At the time of this review, we’ve only had it for a week. The weather hasn’t been terribly hot to determine if it's cooler. Other than that, the roof looks exceptional! Plenty of materials for the roof were delivered a day prior to installation, and quite a few materials were even left over. The existing roof didn’t require removal before installation, which made it possible to install over it and complete it in five days. There was a rainstorm one of the days; otherwise, they would’ve completed the installation in four days. The three-man crew (Salvador, Esteban & Humberto) were very courteous, knowledgeable professionals and took pride in their work. Under the supervision of Jesse and the young man (Benjamin), cleaning up the area made the installation run quickly and smoothly. The entire team was a pleasure to work with!

★★★★★
Review: August 1, 2019 Completion: July 18, 2018

Dear John, Thanks for doing such a great job on our roof! We initially found out about Interlock from looking at a neighbors roof and seeing how nice it looked. We were in the market for a roof, so we asked for a referral and then contacted Interlock. John was very knowledgeable and offered some great options. We were a bit hesitant at first for two main reasons. First, we got a little sticker shock because the price was so much higher than an average roof, and Second, because we were scared the roof would be noisy when it was raining since it was metal. For one, the price value is worth it in the end. You know you received a quality roof that will be the last roof you’ll buy on that property. Comparing it to others that you’ll almost always replace in 7-10 years, this one is worth it. It also looks much more beautiful, and as far as the noise, there really is no difference. We’re happy with how the roof looks, the installation was easy, all crew members were courteous, and there have been zero issues with the roof. We already had it for a year when writing this testimonial, and we are still happy with our decision.

Nearby service areas in Cook County

Interlock® metal roofing is also installed in these communities near Near South Side:

Interlock Industries (Midwest) Inc. also services nearby States

Beyond Near South Side, our team installs Interlock® metal roofing across:

Metal Roofing FAQs for Homeowners in Near South Side

The following metal roofing FAQs are designed specifically for homeowners in Near South Side, Illinois. Whether you are building a new home or replacing an existing roof, understanding how roofing materials perform in local weather conditions is essential. From wind and storm protection to fire resistance, hail impact, snow loads, and coastal moisture exposure, Interlock’s Lifetime Aluminum Roofing System is engineered to provide long-term durability, energy efficiency, and peace of mind in Near South Side.

Will a metal roof hold up to Chicago's freeze-thaw cycles?

Yes—aluminum actually thrives in freeze-thaw conditions because it has no water absorption. Near South Side experiences about 69 freeze-thaw days per year, which breaks down asphalt and causes wood to split and crack. Aluminum's oxide layer doesn't degrade when water freezes in surface scratches; the layer self-heals. The 3105-H24 / 3003-H24 alloy won't expand and contract unevenly the way composite materials do, so you won't see the curling and buckling common in older neighborhoods after a harsh winter.

Does Interlock handle heavy snow loads on a Cook County roof?

Interlock's four-way interlocking panels shed snow reliably even under Near South Side's typical 73 cm annual snowfall. The panels lock so tightly that snow doesn't migrate into seams or pool at transitions. Because aluminum weighs just 0.41 lb/sq ft for the Shingle profile—about 96% lighter than concrete or clay tile—your roof structure carries the snow load with ease, and no reinforcement is needed. Snow guards are available if you want to control shedding on lower-pitched roofs; the lightweight system handles them without stress.

How does a metal roof prevent leaks in a rainy climate?

The four-way interlocking design prevents water from entering gaps between panels, even during Near South Side's average 1024 mm of annual rainfall. Each panel locks top, bottom, left, and right to its neighbors, creating a continuous sealed surface. Water that contacts the panel sheds downward by gravity; underneath, a solid deck and underlayment (installed per ICC-ES ESR-1790 specs) channel any moisture toward gutters. Unlike asphalt, which absorbs water and degrades, aluminum is impervious—the surface never softens or swells, so the seal integrity doesn't weaken over decades.

Why does aluminum resist rust better than steel roofing in Illinois?

Aluminum cannot rust because it contains no iron; the rusting process requires iron to oxidize. Instead, aluminum develops a thin, invisible oxide layer that self-repairs when scratched—a property unique to the metal. Steel, by contrast, oxidizes continuously and requires paint or coatings to slow the process. Interlock uses roofing-grade 3105-H24 / 3003-H24 aluminum with a Alunar® 70% PVDF fluorocarbon finish on both sides, warranted 30 years against chalking and fading. In Cook County's humid environment with freeze-thaw stress, this distinction means your roof's structural integrity stays intact while steel gutters and fasteners around it may corrode.

Can Interlock stand up to Cook County wind gusts?

Yes. The four-way interlocking panels are warranted to resist sustained winds up to 120 mph, which far exceeds Near South Side's typical daily-max winds of about 25 km/h and rare gusts to 95 km/h. Each panel locks firmly to its neighbors, distributing wind load across the entire roof plane rather than letting individual shingles lift or flutter. This continuous, rigid connection is why Interlock panels perform so well in high-wind testing. Unlike asphalt shingles, which can lift and tear, or standing-seam panels that depend on fasteners alone, the interlocking system gives you inherent structural stability in seasonal storms.

Do I need to reinforce my house framing for a metal roof?

No structural reinforcement is needed. Interlock's lightweight construction—the Mediterranean Tile profile installs at just 0.59 lb/sq ft, about 96% lighter than traditional clay or concrete tile—means most existing roof structures can carry the system without modification. A typical asphalt roof weighs 3–5 lb/sq ft; Interlock Shingle weighs 0.41 lb/sq ft. This matters in Chicago's climate because a lighter load reduces stress from snow (Near South Side averages 73 cm annually) and means no expensive framing upgrades. You can install Interlock directly over most existing roofs, saving the cost of a full tear-off and disposal.

Will hail damage hurt my metal roof, and can I get an insurance discount?

Interlock achieves UL 2218 Class 4 impact rating—the highest available—and the Guardian warranty even covers perforation from hailstones up to 1.5 inches. Class 4 means the roof resists severe impacts that would dent or puncture asphalt or wood. Some insurance companies offer premium discounts for Class 4-rated roofs because the risk of interior water damage and claim frequency drops dramatically. While Near South Side's hail exposure is moderate compared to plains states, the Class 4 rating protects you against unexpected severe storms and strengthens your home's overall resilience. Contact your insurer about discount eligibility once the roof is installed.

Does a metal roof really save money on cooling costs in Illinois?

energy-efficient colors with thermal emissivity 0.84 and initial solar reflectance up to 0.55 reduce cooling load in summer while Near South Side receives about 3094 sunshine hours per year. These reflective coatings bounce heat away before it enters the attic, lowering air-conditioning demand on hot days. Asphalt shingles, by contrast, absorb heat and transfer it indoors. The Cool Roof Rating Council rating confirms measurable energy savings. In a city where summer cooling is routine and your roof faces 3000+ hours of sun annually, this reflectance translates to lower energy bills over the roof's lifetime—a hidden but real value that compounds year after year.

What's the real lifetime cost difference between Interlock and asphalt shingles?

Asphalt typically costs less upfront but requires replacement every 15–25 years; Interlock costs more initially but lasts decades longer with zero need for tear-off cycles. A typical Cook County home might install asphalt three times in 50 years—three disposal bills, three installation fees, three supply-chain disruptions. Interlock's lifetime limited warranty (non-prorated for the original owner, transferable 50 years from completion) eliminates that cycle. When you factor in avoided labor, disposal, and landfill costs over a 50-year ownership window, the per-year cost of Interlock becomes competitive—and if you sell, the transferable warranty adds resale value that asphalt cannot match.

What does Interlock's warranty actually cover, and how long does it last?

The Guardian warranty is a lifetime limited, non-prorated material warranty for the original owner, covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. Because aluminum cannot rust and contains no organic material, these common failure modes don't apply—the warranty protects against defects in manufacture, not normal wear. The warranty transfers once to the next owner for 50 years from completion, giving buyers peace of mind and you a selling point. This depth of coverage reflects the engineered durability of 3105-H24 / 3003-H24 aluminum with a 30-year PVDF coating warranty. No asphalt or composite shingle offers comparable protection.

Last updated:

Interlock metal roofing — get a free quote