Illinois Roofing License IDFPR #19HC00108700 · GAF Certified Contractor
Roofs that get inspected and maintained on a schedule typically last 30-50% longer than roofs that get attention only when something obvious goes wrong. The reason: most roof failures start small and slow. A pipe boot starts cracking at year 8 but doesn’t leak until year 12 – by then, water has been wicking into the decking for a year. Catching that boot at the year-8 inspection costs $300. Letting it go costs $3,000 in interior repairs and decking replacement.
This guide is the seasonal maintenance schedule we recommend for Illinois homes. It assumes a standard asphalt-shingle residential roof.
Spring (March-May) – post-winter assessment
Spring is the most important inspection of the year for Illinois roofs. Winter freeze-thaw, ice dams, snow load, and wind events accumulate damage that needs to be documented and addressed before summer storm season.
What to look at:
- Walk the perimeter and check the gutters for granule accumulation (a small amount is normal; piles in the downspouts suggest accelerated shingle wear)
- Inspect the soffit and fascia for water staining or rot (especially at the eaves where ice dams form)
- Look up at the roof from each side of the house with binoculars; note any obviously lifted, missing, or out-of-place shingles
- Check the attic in the morning for water stains on rafters or decking (winter condensation issues show up here)
- Look at the chimney mortar joints from the ground – cracked or missing mortar lets water in even with good flashing
What to schedule:
- Free professional roof inspection if it’s been over 18 months since the last one
- Storm damage claim assessment if you suspect a winter wind or ice event caused damage (IL has a 2-year claim deadline)
- Gutter cleaning if not already done
Summer (June-August) – peak storm season
Illinois summers bring high heat (which softens asphalt and shows pre-existing problems), severe thunderstorms, hail, and occasional tornadoes. Most major roof claims in Madison County come from May-July storms.
What to look at:
- After any storm with high wind (50+ mph) or hail of any size, do a perimeter walk and check soft metals (gutters, AC fins, garbage cans) for impact marks
- Check the yard for shingles or shingle fragments after wind events
- Look for damp spots on ceilings inside the house, especially the top floor or finished attic areas
- Check that the attic vents (ridge, soffit, gable) are clear of bird and wasp nests
What to schedule:
- Free post-storm inspection within 30 days of any significant hail or wind event
- Insurance claim filing if damage is documented (within the 2-year statute)
- Attic ventilation check if summer attic temperatures feel excessive (above 130°F in the attic indicates inadequate ventilation)
Fall (September-November) – prepare for winter
Fall is when you fix small issues so winter doesn’t turn them into big ones. Ice dam season is coming; pipe boots that have been borderline through summer will fail when the temperature drops.
What to look at:
- Gutter and downspout cleaning – leaves clog gutters fast in Riverbend tree-cover neighborhoods. Clogged gutters back up under shingles and contribute to ice dams.
- Trim back tree branches that hang within 6 feet of the roof – they drop leaves into gutters, scrape shingles in wind, and contribute to algae/moss in shaded areas
- Check all penetrations from the ground or with a ladder: pipe boots, chimney flashing, satellite dish mounts, vents
- Verify attic insulation is at code level (R-49 for most of IL) – undersized insulation drives ice dams
- Test attic exhaust fans (gable fans, power vents) – they need to work all winter to manage humidity
What to schedule:
- Roof repair work – pipe boots, flashing, missing shingles, minor decking issues. Schedule before the first freeze; most contractors run a fall blitz to get pre-winter work done.
- Attic insulation top-up if needed
- Chimney sweep / cap inspection – chimney leaks often start at deteriorated chimney crowns or missing caps
Winter (December-February) – emergency-only mode
Winter isn’t a maintenance season in Illinois – it’s an emergency-response season. The goal is to monitor for active leaks and address them quickly, not to do scheduled work on a roof covered in ice.
What to look at:
- Watch for ice dams forming along the eaves. If you see icicle formation along the gutter line, that’s an ice dam in progress. Roof rake from the ground to remove snow that’s feeding the dam.
- Check the attic during the coldest weeks – frost on the underside of the roof deck indicates inadequate ventilation; condensation drips are an active problem
- Inside the house, watch for ceiling stains or active drips. Top-floor rooms are most vulnerable.
- After major snow storms (8+ inches), do a perimeter walk and look for snow load patterns. Uneven melting indicates uneven attic heat loss.
What to schedule:
- Emergency repair only – call a roofer if you have an active leak. Most other work waits for spring.
- Roof rake purchase if you don’t have one – they’re inexpensive and let you remove snow from the lower roof without climbing
Year by year – when to plan replacement
Asphalt shingle roofs in Illinois typically last 20-30 years depending on the original product and how well maintained. A rough timeline:
- Years 0-10: Annual inspection, gutter maintenance, minor repairs as needed. Most years there’s nothing to do.
- Years 10-15: Start watching for pipe boot failure (most common at this age). Probably one or two minor repairs in this window.
- Years 15-20: Expect some granule loss and minor shingle issues. Flashing replacement (especially chimney counter-flashing) often comes up. Some homeowners get a roof replacement in this window for higher-end shingles.
- Years 20-25: Standard architectural shingles approach end-of-life. Replacement planning should be active.
- Years 25+: Time to replace, unless you’ve already done so. The shingles are past their warranty period and likely showing significant wear.
What a Trill Roofing inspection includes
Our free roof inspection covers:
- 30-60 photos across all elevations, valleys, and penetrations
- Test squares on representative slopes for hail or wear damage
- Flashing condition at chimneys, sidewalls, valleys, and pipe boots
- Attic check for ventilation, insulation, and water staining
- Code compliance check (ice barrier, drip edge, ventilation NFA)
- Written report with photos, observations, and recommendations
If the roof needs nothing, we tell you that. If it needs a small repair, we quote the repair. If it’s time to start planning replacement, we explain why and what your options look like.
Schedule yours at /free-inspection/ or call (618) 304-7094.
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