Metal Roofing in South Shore, Illinois — Lifetime Interlock® Aluminum Shingles Installed Locally
South Shore Metal Roofing Experts Installing Lifetime Interlock® Aluminum Shingles Since 2001
Metal Roofing Built for South Shore's Heavy Rain, Snow Loads, Windstorms & Lifetime Protection
Interlock Metal Roofing is a trusted metal roofing contractor and local installer serving homeowners in South Shore, Illinois (Cook County) since May 17, 2001—your exclusive authorized installer of the Interlock® Lifetime Aluminum Roofing System engineered for performance, beauty, and durability. For roof replacement and re-roofing in South Shore, our heavy-gauge, fire-resistant, energy-efficient cool roof solutions are built to shed Lake Michigan’s lake-effect snow, resist freeze-thaw damage, and withstand high winds, heat, and summer storms—providing long-term protection and lower energy costs. Choose the timeless look of slate, cedar shingles, shake, Mediterranean tile, or standing seam with the strength of metal; every Interlock roof is finished with the Alunar® Coating System and backed by a Lifetime Warranty for homes in South Shore, 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
- Available through Interlock® authorized installers serving South Shore and neighboring Cook County homeowners
- Engineered specifically for South Shore’s lakefront climate—lake-effect storms, strong shoreline gusts, heavy rainfall, and freeze–thaw cycles
- Precision weatherproof seams (profiles: slate, cedar, shake, tile) and mechanical fastening (profile: standing seam) deliver long-term leak protection during wind-driven rain events
- Coated with the Alunar® Coating System (no visible aluminum surface)
- Corrosion-resistant aluminum formulation resists deterioration from persistent lakefront moisture and urban atmospheric pollutants common along the South Shore shoreline
- Interlocking panel system tested to 120+ mph (193+ km/h) to withstand severe Great Lakes windstorms
- Snow-shedding panel geometry reduces accumulation and helps prevent ice dams during heavy Lake Michigan snowfalls and repeated freeze–thaw periods
- Designed for rapid seasonal transitions in South Shore—wet springs, humid summers, and cold winters that stress roof assemblies
- Class A fire-rated available for additional protection during dry spells or localized ember exposures
- UL 2218 Class 4 impact resistance protects against hail, falling branches, and storm debris from Midwest severe-weather events
- Cool-roof performance lowers heat gain during Chicago-area heat waves and improves attic comfort and HVAC efficiency
- Engineered for bracket-mounted photovoltaic systems so South Shore homeowners can add solar without compromising weatherproofing
- Fully recyclable aluminum reduces lifecycle waste compared with repeated shingle replacements
- Low-maintenance finish resists moss and algae common in shaded, moisture-prone South Shore neighborhoods, helping preserve drainage and appearance
- Architectural profiles replicate slate, cedar shake, and tile, with standing seam mechanical fastening available for long-term curb appeal
- Backed by a transferable Lifetime-Limited warranty to support long-term protection and resale value in Cook County real estate markets
Metal roofing built for South Shore's climate
Averages (10-yr): ~1024 mm rain and 73 cm snow per year, ~3094 sunshine hours, mean 10.5°C, typical daily-max winds ~25 km/h with gusts to 95 km/h, and ~69 freeze–thaw days per year.
- 73 cmavg. snow / year
- 1024 mmavg. rain / year
- 69freeze–thaw days / year
- 95 km/hpeak wind gusts
- 3094 hrsannual sunshine
- 10.5°Cmean temperature
Interlock® aluminum roofing is engineered for these conditions — wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated, Class A fire-rated, and built to shed snow and resist ice dams and freeze–thaw cracking, backed by a lifetime limited warranty.
Interlock Industries (Midwest) Inc.
- 205 North Michigan Avenue, Suite 810, Chicago, IL 60601, United States
- Phone 872-259-4486
- Sales & Marketing sales@chicagolandmetalroofing.com
- Toll-Free 1-866-733-5811
- Customer Service mwservice@interlockroofing.com
- www.ChicagolandMetalRoofing.com
- Also midwestmetalroofing.com
- License IL #104.013389
- EPA Lead-Safe Certified Firm #NAT-F224594-2
- Serving Illinois since 2001 — 25 years
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.
Recognition GuildQuality Guildmaster Award — verified customer satisfaction (GuildQuality)
Accredited BBB Accredited A+
Get a Free Metal Roof Estimate in South Shore, Illinois
Interlock® Aluminum Roofing — all-climates performance specs for South Shore, Illinois
| Spec / Rating | Climate / 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 4 | Hail and impact debris: highest impact classification; resists cracking, splitting, and surface loss common with asphalt under hail strikes. |
| Snow & ice performance: interlocking, shedding profile | Heavy 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 system | High heat, intense sun, thermal cycling: coatings resist UV breakdown and temperature-swing fatigue, slowing fading and surface degradation. |
| Moss / algae resistance: smooth coated surface | Wet 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+ years | Long-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 transferable | Lifetime protection + resale value: guarantees long-term material confidence and transfers to future owners. |
Available Profiles in South Shore, Illinois:
Explore all Interlock® metal roofing systems, or see the Guardian lifetime warranty and independent testing reports.
Recent Interlock® roofs across Illinois
Colonial Brown Cedar ShingleLa Grange, IL
Colonial Brown Cedar ShingleLa Grange, IL
Deep Charcoal Standing SeamCarpentersville, IL
Deep Charcoal Standing SeamCarpentersville, IL
Deep Charcoal Standing SeamCarpentersville, IL
Deep Charcoal Standing SeamCarpentersville, IL
Black Standing SeamWoodstock, IL
Black Standing SeamWoodstock, IL
Completed Interlock® metal roofs near South Shore, IL
Every marker is a real, anonymized Interlock® aluminum roof completed by a Certified Interlock Installer. Explore verified Interlock® installations near South Shore, Illinois, United States on the interactive project map and photo grid — filter by roof profile (Slate, Cedar Shingle, Shake, Mediterranean Tile, Standing Seam, Solid Copper), colour and year of completion.
Open South Shore on the interactive project map →Browse all Interlock® projects in Illinois →See more Interlock® projects →
What our customers are saying:
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!
Dear Mark, I would like to provide you some feedback on the first phase of work done on our project at the Church of the Nazarene, in Chicago Heights. Before going into the details of the work perforn1ed, I would like you to know how pleased I was putting together this project with your sale manager, John Mondschean. John’s a pleasure to work with, always prompt, courteous, and clear with feedback and follow-ups. He not only knew his product well but proved to be very helpful in overcoming the various issues of the job. John was able to meet our needs while staying within the budget by offering helpful suggestions and options. I could only hope to have such a knowledgeable, responsible person to work with on future projects. As for the first phase of work, installing a 50-year PVC membrane roof with insulation over the existing roof, integrating metal flashings and adding badly needed ventilation to the top flat area above our sanctuary. This job was performed by a group of tradesmen that took pride in their workmanship; not only did they arrive at the job site on time each workday, they never left without ensuring that the work site was clean and secure daily. For me, that was a big plus. I watched the installation and was pleased with the care utilized by the workmen. Roofing seams were straight, smooth and clean. Details cuts and welded fitting were secured around each of the skylights with care. I was pleased with your workers and their workmanship as witnessed on the job site. Mark, most of all, I’m pleased to inform you that my biggest pet peeve was adhered to without fault, Safety. Your workmen used proper fall protections with tie-offs, body harnesses, and safety lanyards. All ladders and guards were properly secured. At the completion of the job, the work area was thoroughly cleaned, and all scrap materials were removed from the work site. Thank you for a job well done. This job was well-managed and professionally carried out. I look forward to the second phase of our project in the fall.
Now that our new Interlock Roofing system has been installed, we find the look to be extraordinary! It boasts sophistication and looks clean and elegant. This product is impressive not only by its looks but also by its clever and unique interlocking design. Almost more important than the attractive look of our new roof is the peace of mind we have gained with its many features. It’s a relief not to have to be concerned about losing shingles as a result of the high winds we experience regularly in our area. Also, having experienced ice dams this past winter, it is reassuring to know that they cannot occur with the design of this product. We are impressed with its many features. In addition to the two already mentioned, the inability of the shingles to curl, being fireproof, and the reflective properties are features that caught our attention. Knowing the product is guaranteed to last a lifetime and never have to re-roof is an added bonus. The installation of our new roof began four weeks after the materials had been delivered, and then took another four full weeks to complete the actual installation process. Although hampered by a couple of days of strong winds and a couple more of rain, Eric, our installer did an awesome job of handling our installation. He was very professional and personable at all times and was willing to answer and explain our questions. Eric is obviously very skilled at his profession and pays attention to detail, which contributed greatly to the outcome of our new roof. We would recommend this roofing system to anyone wanting to improve the look and value of their home, but would also caution him about the lengthy installation process and the inaccurate scheduling information we received. We believe this to be an outstanding product despite these problems.
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!
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.
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.
After researching the various metal roof manufacturers and metal roofs in general, we chose Interlock. In addition to offering a great selection of styles, Interlock was the only company that installed their own product. I liked being able to deal with one company regardless of the issue. My wife and I are very happy with our choice and results. The curb appeal has been enhanced, and we have gotten the thumbs up from our neighbors for the great look. I am happy with the performance of the roof, and I have found everything touted about this roof to be true. We had a tremendous thunderstorm come through and a downpour that was second to none. The noise from the rain hitting the roof was quieter than on the old shingle roof. I am eagerly anticipating the summer for the cooling benefit I expect to receive. Installation of the roof was flawless. The crew was very courteous and hard-working. It was obvious they were very skilled and knew what they were doing. They took the time to do it right. I believe they treated my property as if it was their very own. Communication was exceptional, and I was kept abreast of what had been done and what was going to be done each day. I even received a call from the salesperson following up which was totally unexpected. I would not hesitate to recommend Interlock to anyone who is looking for a metal roof.
The roof is gorgeous, best money ever spent. Chuck was great at explaining the system. Allen was a true pleasure to work with and there are no words to describe the excellent job Jesse and his wonderful crew did. I am truly impressed beyond belief with Interlock.
We built our house 25 years ago from plans I found in Country Living Magazine. It is a perfect blend of the “new” house my husband wanted and the “old” farmhouse that I wanted, nestled at the end of a quiet cul-de-sac, it was a perfect place to raise our kids. We still love it just as much as we did then…but it was in need of some updates. It was time to replace the original roof, and why not repaint too? This has been the summer to do it all. We looked at asphalt shingles, but nothing wowed me. Some colors were “close,” but it was still a lot of money to spend on something that was just o.k. I kept thinking about a metal roof, but my husband wanted something traditional. Thank goodness an advertisement popped up on my computer one day. We loved the look but wondered how they would really look. I did a little research and made the call. We were impressed!!! Not an easy feat! The colors were fabulous! A perfect blend of what we were both wanting. After months of discussions and searching, we bought our roof that night. I so wish we had started with Interlock! Thankfully because of when we ordered, there was a few weeks wait time… Just enough to get the painter in to paint, and enough time to change the porch pillars too. Jesse was our crew leader for installation; he was great, and so were all members of our install crew. They were so polite and kept the area cleaned up on a daily basis. I love the new look! And knowing that this roof will last a lifetime, literally, is very comforting. Thanks for a job well done.
Our new roof is beautiful! We have received so many compliments and inquiries since our Interlock roof was installed four weeks ago. John delivered on his promise with a quality product and set up the stage for what was to come, answering all our early questions and showing us the information we were looking for to make a confident decision. He provided us with installation pictures of previous jobs, the product specifications, color and type of samples, historical data on product performance and much more. Dal from customer service responded quickly with dates when the material was arriving and dates for the installation. After some concerns about having to travel for work and being out of town, Al communicated well, and they worked around my travel schedule my family appreciated this greatly. The roof is not any louder during several of the storms we have had already than before. Despite a few outside temperatures reaching the 80s and sunny, the inside of the house has stayed cool without needing to turn on the AC or ceiling fans. It really is a new experience to walk into our second-level rooms and not have it feel warmer than the lower level. The installation crew did a great job. They told us everything they were doing and answered all of our questions. The fire department even stopped by during the installation to ask what it was! The crew completed the job in 4 days, working over the weekend to finish before the next storm. They left the yard clean every night, and they cleared out the gutters from all of the debris. After watching the team install the new roof safely, we have come to appreciate the craftsmanship that comes with installing this type of roof. The crews are proud of the product, and their care shows in the installation. Putting on this new roof requires a lot of skill, a lot of hours, and experience that I think new owners won’t realize until observing them and going through it. Minimal waste scraps, efficiently making thousands of measurements and metal shaping to perfectly fit all the corners and bends is a testament to the experience our crew, led by Jesse and Sal, had. This Interlock company has been great and there have been so many people referenced here that have worked to provide us a great customer experience. To the whole team, great job, and thank you. We look forward to the many years this roof will continuously perform as it was designed and the many more times we will appreciate the beauty of it.
We had replaced one roof in the time we had owned our home, and now it was time for the second replacement. I began to wonder if there were any alternatives to old asphalt technology. Also, we had two concerns about asphalt, the first is that it is not clean from an environmental standpoint and second, asphalt is oil based which means its cost is linked with the price of oil. I noticed that many commercial buildings had metal roofs. My wife and I usually do a lot of deep research for major home projects. We began looking into the possibility of replacing the current roof with metal. Our research indicated that there were residential metal roofs available in various metals and styles. Four factors need to be considered. Type of metal. We chose aluminum over steel. It’s lighter and less susceptible to corrosion, although corrosion is not a major factor due to the various coatings and treatments applied to both metals during the manufacturing process. Structural assembly. We liked the Interlock method of attaching the panels to each other and the roof base. When complete, the system is structurally sound and waterproof. Installation process. Installing a metal roof requires experience. Installation is different from that of an asphalt roof. During our research, we had a hard time locating installers that had experience installing residential metal roofs. This was another reason that we chose Interlock. They are associated with installation crews who have the knowledge and experience required for working with the Interlock product. The only other factor to consider is the style and color, and there are many to choose from. Installation was uneventful, the crew was courteous, and they explained exactly what they were doing and answered any questions that we had. The roof looks beautiful, and we have had many compliments on it since it was installed two weeks ago. We are very happy that we chose Interlock for this project and highly recommend them.
The process was seamless, it was a no-headache, no-hassle experience and the roof looks amazing. The team was fast, respectful, and really took the time to make sure we understood everything that was going on. They were very safe and considerate of my dogs going in and out of the backyard, and took extra time to clean up everything each day, and especially when they finished the job. And not a single plant damaged (which is amazing, because they are planted right up next to the house)! They were friendly and communicative, and took care of everything. It was a great experience, and we now have the most beautiful roof on the block. I think the scheduling team could have been a little bit more proactive in terms of communication in the time between the signing of the contract and the installation, but obviously it all worked out just fine, so they clearly were doing everything they needed to be doing scheduling-wise, and it ultimately didn't influence the experience all that much, especially since John Mondschean (sales) was so accommodating and communicative throughout the process. There have been a lot of new roofs going on in my neighborhood since the big double hailstorm last year, and I can confidently say that ours is the most beautiful, and the team that installed it was the cleanest and most considerate. There was not a single piece of plastic, nail, etc. left behind after they were done, and they were pretty quiet throughout the process, which was important to me as I work from home.
Nearby service areas in Cook County
Interlock® metal roofing is also installed in these communities near South Shore:
Interlock Industries (Midwest) Inc. also services nearby States
Beyond South Shore, our team installs Interlock® metal roofing across:
Metal Roofing FAQs for Homeowners in South Shore
The following metal roofing FAQs are designed specifically for homeowners in South Shore, 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 South Shore.
Can I get a metal roof that looks like slate, cedar shake, or tile without the weight?
Yes. Interlock offers five profiles—Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile—each molded to match traditional materials in appearance. The Tile profile weighs about 0.59 lb/sq ft, roughly 96% lighter than concrete or clay tile, so your home's frame needs no structural upgrades. All profiles use the same roofing-grade 3105-H24 aluminum alloy with a 30-year Alunar® PVDF coating on both sides. In South Shore's 1024 mm annual rainfall and 73 cm snow, the lighter weight means faster installation and no hidden reinforcement costs.
Is a metal roof really cheaper than asphalt over 30 or 40 years?
Metal is the last roof you buy—asphalt typically needs replacement every 15–20 years. Interlock's Guardian Warranty is lifetime limited and non-prorated for the original owner, then one-time transferable for 50 years to the next owner, covering rust, rot, splitting, and impact loss. Over four decades in South Shore's climate—with roughly 73 cm snow, 1024 mm rain, and 69 freeze-thaw cycles annually—you'll avoid multiple tear-offs, disposal fees, and labor. That cumulative cost, plus the resale premium, makes aluminum significantly cheaper than the cycle of replacing asphalt twice.
Why can't aluminum rust like steel roofing does?
Aluminum contains no iron, so chemically it cannot rust. Instead, it forms a microscopically thin, self-healing oxide layer when exposed to air. If that layer is scratched—say by a branch or foot traffic—it regenerates within days. Interlock's panels are also coated on both sides with Alunar® 70% PVDF fluorocarbon finish, warranted 30 years against chalking and fading per ASTM standards. In Cook County's salt-air exposure and freeze-thaw environment (69 days yearly), steel roofing would corrode from the underside in 10–15 years; aluminum simply doesn't degrade that way.
How does a metal roof handle South Shore's freeze-thaw cycles?
Aluminum's crystalline structure and lack of water absorption make it immune to freeze-thaw damage. With South Shore averaging 69 freeze-thaw days per year and 73 cm of snow, asphalt shingles absorb moisture, swell when frozen, and crack as they thaw—a cycle that degrades them in 15 years. Interlock's roofing-grade 3105-H24 aluminum alloy experiences thermal expansion but doesn't absorb water or rot. The four-way interlocking panels accommodate movement, and the Alunar® coating (30-year warranted) protects both the top and underside. After 25+ years in this climate, aluminum performs like new while asphalt has failed twice.
Do metal roofs handle heavy snow loads and ice dams in Illinois winters?
Metal roofs shed snow and ice more effectively than asphalt because their smooth surface allows water to flow freely, reducing ice-dam buildup. South Shore receives about 73 cm of snow annually and experiences gusts up to 95 km/h; the four-way interlocking aluminum panels are warranted to resist winds up to 120 mph (193 km/h) when installed to spec, so snow and wind loads are easily managed. The metal panels' light weight—Slate at 0.41 lb/sq ft, Shake at 0.58, Tile at 0.59—means you can install snow guards if desired without structural concern. Most Illinois metal roofs shed snow faster than they accumulate it, eliminating the ice-dam damage that plagues asphalt every winter.
Will a metal roof blow off in a South Shore windstorm?
No. Interlock's four-way interlocking aluminum panels are engineered so each panel locks to its neighbors on all four sides, distributing wind load across the entire roof. The system is warranted to resist sustained winds up to 120 mph (193 km/h) when installed per spec. South Shore's typical gusts reach about 95 km/h with extreme gusts slightly higher, well within the roof's rated capacity. The ICC-ES evaluation report ESR-1790 (reissued 2025 for IBC/IRC) certifies the interlock design for wind performance. Unlike asphalt, which can lift and tear at corners, or standing-seam single-lock systems, Interlock's four-way design has no weak points where wind can get a grip.
Does hail damage a metal roof, and can I get an insurance discount?
Interlock metal roofing carries a UL 2218 Class 4 impact rating—the highest available—and the Guardian Warranty even covers perforation from hailstones up to 1.5 inches. In South Shore's climate, this protection is genuine peace of mind. Many homeowners with metal roofs qualify for homeowners insurance discounts because insurers recognize the durability; contact your agent with the UL 2218 Class 4 rating and the 30-year Alunar® coating specs to verify your policy. Steel or asphalt would require roof inspection and likely premium increases after even modest hail. Aluminum's combination of non-dent engineering and impact warranty eliminates that insurance headache.
How much maintenance does a metal roof need compared to asphalt or tile?
Metal requires far less maintenance than asphalt, wood, or tile. Interlock's roofing-grade aluminum panels shed debris, don't rot, don't curl, and the Alunar® 70% PVDF coating (30-year warranted) resists algae and weathering. Asphalt shingles need moss/algae treatment, crack-filling, and replacement every 15–20 years; tile requires periodic mortar repointing and cracked-piece replacement. In South Shore's 1024 mm annual rain and 73 cm snow, metal simply sheds water without the maintenance burden. CALGreen verification confirms reduced maintenance needs. Most homeowners clean gutters twice yearly and occasionally wash the roof—that's it. The Guardian Warranty covers rusting, rotting, splitting, and curling, so there's no guesswork about what's your responsibility.
Can you install a metal roof over my existing asphalt shingles?
Yes. The extraordinary light weight of Interlock panels—the Tile profile at about 0.59 lb/sq ft, roughly 96% lighter than concrete or clay tile—means installation over most existing asphalt roofs requires no structural reinforcement. The installer inspects the existing deck for soundness, installs underlayment for moisture control, then fastens the metal panels directly over the old shingles. This avoids expensive tear-off labor and landfill fees and is often faster than stripping. South Shore's Interlock Metal Roofing installer, serving the region since 2001, can walk your roof, confirm your deck is suitable, and give you a timeline—typically 2–5 days for a residential home. New deck work, if needed, is also faster with metal because the panels install quickly once prep is done.
Is aluminum roofing better for the environment than asphalt?
Yes. Interlock's roofing-grade aluminum is about 95% recyclable at end of life, and aluminum recycling uses 5% of the energy required to produce new aluminum. Asphalt shingles are not recyclable in most places; South Shore homeowners tear off asphalt every 15–20 years and send it to landfill—multiply that across millions of homes. Interlock panels, installed in 1998 and still performing, have already saved multiple landfill cycles. When your metal roof does eventually retire decades from now, the aluminum will be melted and reused for cans, windows, or new panels. The Guardian Warranty's lifetime coverage for the original owner (plus 50 years transferable) means your roof outlasts typical building occupancy, delaying any recycling date by 40+ years compared to asphalt's replacement cycle.
Is a metal roof a good choice for South Shore’s climate?
Yes. South Shore averages about 73 cm of snow, 1024 mm of rain, roughly 69 freeze–thaw days a year, with peak wind gusts near 95 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.





