Three Generations Of Shingles On One Mount Prospect Ranch
Mount Prospect built out fast between the mid 1950s and the late 1970s, which means most of the town is now on its third roof and a fair number of those roofs were installed on top of the ones before them. We tear off, look at what the layers were hiding, and build it once.

Tan shingle, continuous ridge vent
A Commuter Suburb With Very Predictable Roofs
Mount Prospect is one of the easier towns in the county to read from the street. The Union Pacific Northwest line runs through the middle of it, and the town grew outward from that station in rings you can date by roofline. Closest in, you get the older frame houses and the smaller postwar lots. Push out toward Kensington Road and Golf Road and you hit block after block of 1960s ranches and tri-level splits, most of them with the same modest pitch, the same gable ends, and the same original ventilation scheme that made sense when the attic was empty and nobody had a bathroom fan.
That consistency is useful. When we quote a Mount Prospect ranch we already know roughly what the deck is, what the eave detail looks like, and where the previous roofer probably cut a corner. The two things that vary are how many layers are up there and how badly the low-slope section over an attached garage or a rear family room has been ignored. Those additions are where Mount Prospect roofs actually fail. The main slope will look fine from the driveway while the flat piece behind the house has been ponding for a decade.
Downtown has changed the picture at the other end. The transit-oriented development around the station brought in mixed-use buildings, newer townhome rows and condo blocks, and those come with flat and low-slope membrane roofs instead of shingles. Different system, different failure modes, same crew. We work membrane as much as we work asphalt, so a board with a leaking TPO deck over occupied units is not a job we have to subcontract out.
What We Do Most Around Here
- Shingle roof replacement on 60s and 70s ranches and splits, tear-off to the deck, with the layer count settled before you sign anything.
- Shingle roof repair on slopes that still have real life left and just lost tabs to a windy afternoon.
- Wind damage repair, the northwest suburbs’ most common storm call, usually on the west and southwest faces.
- TPO roof repair on the newer downtown mixed-use and townhome buildings near the station.
- Gutter replacement where forty years of ice load has pulled the runs off pitch and away from the fascia.
Small commercial gets the same handling. The retail strips along Rand Road and the office and service buildings scattered through town run on flat roofs that need inspection and patching more than they need drama. Our commercial roofing side schedules around business hours and sends photo reports a property manager can forward without a translator.
The Layer Question, Answered Honestly
Half of our Mount Prospect first calls include some version of “can you just go over it.” The answer is no. Illinois code caps how many layers a roof can carry, and even where a second layer would technically squeak by, going over the top means nobody ever sees the deck. On houses this age the deck is exactly what needs looking at. We find soft plywood at the eaves, split boards around old vent penetrations, and skip sheathing where somebody swapped in a bathroom fan and never patched properly. None of that shows up through two layers of shingle.
Tear-off also settles the ventilation problem, which on a 1965 ranch is usually the reason the last roof only lasted eighteen years. Original construction here often relied on a couple of box vents and a gable louver, which does not move enough air for an attic that now has R-49 blown in over it. When the deck is open we can set proper intake at the soffit and run a continuous ridge vent, and the next roof gets a fair shot at its full life instead of cooking from underneath.
Storms Come Across This Corner Sideways
Summer cells that track through northwest Cook tend to hit with straight-line wind more than hail. What that does to a Mount Prospect ranch is specific: it lifts and creases tabs along the windward slope, backs water up under the shingles at the rake edge, and pulls loose gutter spikes right out of tired fascia. The damage is often invisible from the ground because the tabs settle back down looking normal. We get up there, check the seal strips by hand, and photograph what we find whether or not there is a claim in it. If there is, our insurance claim help covers the documentation and the adjuster meeting. If there is not, we say so and you keep the photos.
About The Drive From Alsip
Our shop sits in Alsip on the south side of the county, so Mount Prospect is a genuine trip for us. We handle that by grouping northwest work into scheduled runs rather than sending one truck up on a whim. Practically speaking, a non-urgent replacement here may wait a few days for the next run, and there is no travel surcharge on your quote for the mileage. Leaks are the exception and always have been. If water is coming in, we get a patch on it.
Angelo Ristich took this business over from his father Frank and still supervises the work in person, which is why you deal with him rather than a rotating cast of salespeople. Guardian holds an A+ rating with the BBB, carries the HomeAdvisor Elite Service award, and is licensed and insured in Illinois. Most quotes start with satellite measurements over the phone so you get a straight price fast, and we can point you toward financing if the timing is rough. Finished jobs are in the gallery.

Starter courses, laid straight off the eave
Mount Prospect Notes
Northwest Cook, booked into grouped runs from Alsip. Distance costs you nothing extra. Leaks get an emergency patch on their own timeline.
1950s to 1970s ranches, splits and colonials, plus membrane roofs downtown near the station.
(312) 590-4853Booked The Same Week As These Towns
Mount Prospect sits in the middle of our northwest Cook County run, which is the whole reason the schedule works out here. Des Plaines is directly east along the river with the same postwar building era and a lot more drainage trouble, and Prospect Heights is a short hop north where the lots get bigger and the houses get older. Crews that are already up here with a loaded truck cover all three, so nobody eats the drive twice. Everywhere else we cover is on the service areas page.
Mount Prospect Roofing Questions
My roof already has two layers. What are my options?
Tear-off, and only tear-off. A third layer is a code problem, a weight problem and a warranty problem, and it hides the deck we need to inspect. On a house from this era the deck is usually where the real story is, especially at the eaves and around old vent cuts.
The main roof looks fine but there is a stain over the family room. Why?
Almost always the low-slope addition, not the main slope. Mount Prospect ranches grew family rooms and attached garages with shallow roofs that fail decades before the shingles do. We quote both surfaces together so the transition flashing is one crew’s responsibility.
Wind came through and I do not see missing shingles. Should I bother?
Yes, get eyes on it. Straight-line wind creases tabs and breaks seal strips without taking anything off the roof, and the tabs lie back down looking fine from the driveway. We check the seals by hand and photograph the result whether or not it turns into a claim.
Do you handle the flat membrane roofs on the newer downtown buildings?
Yes. TPO, EPDM and coatings are a core part of what we do, not something we farm out. Buildings near the station with occupied units get scheduling that keeps residents and tenants working, plus written photo reports for the board or manager.
Why did my last roof only last eighteen years?
Usually ventilation. Original 1960s attics were vented for an attic with almost nothing in it. Add modern insulation depth and a bath fan and the air stops moving, which bakes shingles from below. When we tear off, we fix intake and exhaust so the new roof gets its full life.
Can I get a price before scheduling a visit?
Usually, yes. Give us the address and we pull satellite measurements while you are on the phone, which gets most homes a real number the same call. Complicated roofs we come look at first. Either way, start through the contact page or just call.
Get A Straight Price On Your Mount Prospect Roof
Call Guardian Roofing and describe what the roof is doing. You will get an honest read and a real number, not a two-hour presentation. The contact page works too if you would rather send photos and have us call you back.