The most reliable signs a Glenview home needs a new roof: shingles curling or losing their flat profile, granules collecting heavily in the gutters, visible daylight through the attic roof deck, a roof approaching or past 20-25 years old, and repeated leaks or repairs in different spots. Any one of these is worth a professional look; two or more usually means it's time.

1. Shingles are curling, cupping, or cracking

Shingles nearing the end of their life lose their flat profile — edges curl upward, or they develop a cupped shape. Cracking, especially on south- and west-facing slopes with the most direct sun exposure, is another clear sign of age-related wear.

2. Granules are collecting heavily in your gutters

Asphalt shingles shed some granules over their lifetime, but a heavy, consistent buildup — especially if it looks like it's increasing — signals the shingle's protective surface is breaking down faster than normal.

3. You can see daylight through the attic roof deck

On a clear day, take a look at your attic (safely) for any points of light coming through the roof deck. This is one of the more definitive signs of a genuine problem, not just cosmetic wear — it means there's a real gap somewhere in your roof's structure.

4. Your roof is approaching or past 20 to 25 years old

Standard architectural asphalt shingles in the Chicago area typically last 25 to 30 years under normal conditions, though ventilation, storm history, and installation quality all affect where a specific roof lands in that range. A roof at or past this age deserves a closer look even without other obvious symptoms.

5. You've had repeated leaks or repairs in different spots

A single isolated repair on an otherwise healthy roof is normal. Repeated issues in different locations over a relatively short period usually means the underlying material is declining broadly, not just failing in one weak spot.

What to do if you're seeing one or more of these

A free inspection is the fastest way to get a clear, professional answer rather than guessing from these signs alone — especially since some of the most reliable indicators, like hail bruising, aren't visible without a closer look.

Frequently asked questions

Is age alone a reason to replace a roof?
Not necessarily — a well-maintained, well-ventilated roof can outperform its typical lifespan, while a poorly ventilated one can show real wear earlier. Age is one factor among several, not the only one.

Can I address these signs with a repair instead of a full replacement?
Sometimes, if the issue is genuinely isolated. Widespread signs like heavy granule loss or attic light typically point toward replacement being the more sensible choice.

Do these signs apply the same way to other roofing materials, not just asphalt shingles?
The specifics vary — metal, slate, and tile show different wear patterns — but the general principle of watching for age, recurring issues, and visible deck problems applies across materials.

Last updated: August 2026. Noticing any of these signs on your Glenview home? Schedule a free AI drone roof inspection with RS Five for a clear, documented answer.