Cook County Roofing From A Crew That Lives Here
Cook County is not a market we expanded into. It is where the shop sits, where Frank ran his crews, and where Angelo runs his now. From Alsip we cover the whole county: bungalow belts on the South Side, flat-roofed two-flats from Cicero to Rogers Park, postwar suburbs like Oak Lawn and Blue Island, and the industrial corridors in between.

Cook County shingle work at day’s end
Roofing A County With Three Kinds Of Roofs
Cook County throws every roof type in the book at a contractor, and a crew that only does one of them ends up guessing at the other two. The city and inner suburbs run on flat roofs: two-flats, three-flats, courtyard buildings and store-top apartments with membrane and modified bitumen systems that fail at seams, drains and parapets. The bungalow belt and the postwar suburbs run on shingles, most of them architectural asphalt over decking that has seen three or four Chicago decades. And the industrial corridors along the Cal-Sag Channel, the I-57 spine and the O’Hare feeder routes run on metal and big commercial low-slope fields measured in acres, not squares.
We work all three every week, which is rarer than it should be. Flat roofing has been the company’s specialty since Frank’s era, shingle replacements are our bread and butter in the suburbs, and our metal and commercial crews carry the certifications and the patience that big-building work demands. One company, one point of contact, whichever kind of roof Cook County handed you.
What The County’s Weather Does
Everything here is a weather story eventually. Lake Michigan drives freeze-thaw cycles that pry at shingle edges and split flat-roof seams from November through April. Spring brings hail corridors that run diagonal across the south suburbs, and every few summers a derecho flattens fences and peels back roofs from Harvey to Des Plaines. August heat cooks dark flat roofs past 150 degrees, aging membrane years in a season. A Cook County roof needs to be built for all of it at once, which is why we spec ice and water shield past code minimums, weld TPO seams instead of gluing them, and flash chimneys like the masonry is going to move, because it is.
The Flat Roof County
No county in America carries more flat residential roofing per square mile than Cook. The two-flat and three-flat were how Chicago housed itself for a century, and every one of those buildings has a low-slope roof that somebody has to understand. Understanding means knowing that water on a flat roof travels, so the stain in the back bedroom often starts at a parapet thirty feet away. It means knowing that the 1920s buildings hide two or three generations of old roofing under the current membrane, and that a re-cover quote that never mentions weight or code is a quote written from the curb. And it means owning the right equipment: welders for TPO seams, kettles and torches for modified bitumen, and coating rigs for the roofs that need five more years before a family can afford the full replacement. That last one matters. A silicone or acrylic coating over a sound but aging membrane is honest work we recommend constantly, because the best roof for a lot of Cook County owners is the one that defers the big spend without leaking in between.
How Dispatch Works From Alsip
The shop sits at the county’s southwest hinge, which is why the south suburbs see us fastest: Oak Lawn, Chicago Ridge and Blue Island are ten-minute runs, Harvey and the Calumet corridor fifteen. City jobs get grouped so a flat-roof crew working Bridgeport in the morning can probe a Cicero seam by afternoon. North-county work schedules a day or two out. Active leaks jump every queue regardless of zip code, because a bucket in the living room does not care about routing efficiency, and neither do we.
The Work, County-Wide
- Shingle roof replacement and repair across the bungalow belt and postwar suburbs.
- Flat roof repair, replacement and TPO installation on the city’s two-flats, three-flats and commercial strips.
- Storm damage repair with insurance claim documentation after hail and wind events.
- Gutter installation and repair sized for lake-effect downpours.
- Warehouse and industrial roofing along the county’s freight corridors.
Every job is owner-supervised. Angelo quotes most residential work from satellite measurements while you are on the phone, and commercial clients get photo-documented inspection reports a board or lender can read without translation. Proof lives in the gallery and in thirteen years of Google reviews.
One more thing about working your home county: reputation compounds here. The crew that leaves nails in a lawn in Oak Lawn hears about it at the supply house in the morning. We built this company on the opposite effect, where the Blue Island job comes from the Alsip job and the Cicero three-flat comes from its owner’s cousin in Harvey. That referral chain only works if every single roof holds, which is the most honest quality-control system the trade has ever invented.

Commercial flat, coated and sealed
Cook County Facts
Shop in Alsip, 60803. Same-week looks almost everywhere in the county, same-day for active leaks when the board allows.
Flat, shingle and metal crews under one roof. BBB A+, licensed and insured in Illinois.
(312) 590-4853Cook County Towns We Cover
Six towns get their own pages because we are in them constantly. The rest of the county, from Calumet City to Des Plaines, gets the same trucks and the same standards. Evergreen Park, Burbank, Palos Heights, Oak Forest, Tinley Park, Orland Park, Berwyn: all regular stops on the schedule. If you are anywhere in Cook County, you are in range, and if you are in the south suburbs you are practically on the way home.
Every Cook County town on our board has its own page now: Arlington Heights, Barrington, Bedford Park, Bellwood, Berkeley, Berwyn, Bridgeview, Broadview, Brookfield, Burbank, Burr Ridge, Chicago Heights, Country Club Hills, Des Plaines, Dolton, Elk Grove Village, Elmwood Park, Evergreen Park, Flossmoor, Forest Park, Franklin Park, Glenview, Hanover Park, Hickory Hills, Hoffman Estates, Homewood, Justice, La Grange, La Grange Park, Lansing, Lemont, Lincolnwood, Lyons, Matteson, Maywood, Melrose Park, Morton Grove, Mount Prospect, Niles, Norridge, Northbrook, Oak Forest, Oak Park, Olympia Fields, Orland Hills, Orland Park, Palatine, Palos Heights, Palos Hills, Palos Park, Park Ridge, Prospect Heights, Richton Park, River Forest, River Grove, Riverside, Rolling Meadows, Rosemont, Schaumburg, Schiller Park, Skokie, Streamwood, Tinley Park, Westchester, Western Springs, Wheeling, Wilmette, Winnetka, Worth.
Chicago
Two-flats, three-flats and flat commercial roofs. Our membrane crews’ second home.
Oak Lawn
Ten minutes from the shop. Postwar ranches and Georgians, plus the 95th Street commercial strip.
Blue Island
Some of the county’s oldest housing stock, with the flashing and decking surprises to match.
Chicago Ridge
Shares Oak Lawn’s hail history. Shingle repair and replacement, storm documentation.
Cicero
Bungalows and brick two-flats wall to wall. Flat and shingle work on the same block, often the same building.
Harvey
Hard-working housing stock and industrial buildings that need honest, budget-real roofing.
Cook County Questions
Do you cover the North Side and northern suburbs too?
Yes. The shop is south, in Alsip, so the south half of the county gets the fastest response, but our crews run jobs from Evanston to Chicago Heights. The 50-mile radius covers all of Cook County with room to spare.
Who handles Chicago building permits for roof work?
We do. City of Chicago and suburban permit requirements differ town to town, and thirteen years of working the county means we know which village hall wants what. Permit costs appear as a line item in your quote, not a surprise afterward.
Can one company really handle my two-flat and my mother’s ranch in Oak Lawn?
That is the point of us. Flat membrane work and steep-slope shingle work are different trades, and we staff both. Plenty of our Cook County customers started with one building and handed us the other within a year.
A storm just crossed the county. How do I get in the queue?
Call (312) 590-4853, tell us what you see, and active leaks get triaged first with tarps and patches. Documentation for insurance claims happens before cleanup so nothing gets lost. Storm weeks are exactly when proximity matters, and we live here.
My building has layers of old roofing under the current one. Is that a problem?
On Cook County’s older stock, usually yes. Multiple layers trap moisture, hide rot, add dead load and complicate every future repair. When we quote a flat or shingle replacement we tell you what is actually up there, what code allows, and what removal costs, in writing. Buildings that have been re-covered twice are exactly the ones where the cheap quote becomes the expensive job.
Do you inspect before a home purchase in Cook County?
Yes, and quickly. Agents and buyers use us for roof-specific inspections and roof certifications on short notice, the kind a general home inspector flags but cannot price. Ask through the contact page with your closing date and we will work to it.
Your County, Our Home Turf
Call Guardian Roofing and get a straight answer on any roof in Cook County, from a bungalow in Cicero to a warehouse on the Cal-Sag. Or send the address through the contact page and we will pull the satellite measurements before we call back. Thirteen years, one county, two generations of the same family on its roofs: that is the whole pitch, and the reviews back it up.