Why Regular Roof Inspections Matter
The average homeowner spends $300 to $500 on a professional roof inspection. But a ground-level visual inspection costs nothing and takes 20 minutes. Roofing professionals recommend inspecting your roof twice a year: once in spring after winter weather, and once in fall before winter sets in.
This 15-point checklist covers everything you can evaluate without climbing on the roof. If you find problems, get a professional assessment or check your replacement cost before the damage worsens.
Exterior Inspection (From the Ground)
1. Missing or damaged shingles. Look for gaps, bare spots, or shingles that appear lifted, cracked, or broken. Even one missing shingle can allow water infiltration.
2. Curling or buckling shingles. Shingles that curl upward at the edges or buckle in the middle have lost their adhesion and are no longer waterproof. This is one of the key signs you need a new roof.
3. Granule loss. Dark, sandy particles accumulating in gutters or at downspout exits indicate shingle deterioration. Some granule loss on a new roof is normal, but consistent loss means degradation.
4. Sagging roof line. Stand across the street and look at your ridge line. Any dip, bow, or sag indicates potential structural failure. This requires immediate professional evaluation.
5. Flashing condition. Check the metal flashing around chimneys, vents, and wall intersections. Look for rust, lifting, or gaps. Flashing failure is the number one cause of roof leaks.
6. Gutter condition. Inspect gutters for sagging, separation, or overflow staining on fascia boards. Clogged or damaged gutters cause water to back up under shingles. See our gutter repair guide.
7. Drip edge. Confirm metal drip edge is present along all roof edges. Missing drip edge allows water to wick behind fascia and into the soffit.
Attic Inspection
8. Daylight through roof boards. On a sunny day, check for pinpoints of light coming through the decking. Light means water can enter too.
9. Water stains on decking. Dark spots or discoloration on the underside of plywood indicate past or active leaks. See our guide on finding roof leaks.
10. Insulation condition. Wet, compressed, or discolored insulation near the roof indicates moisture intrusion. Proper insulation also affects roof longevity. See our insulation guide.
11. Ventilation. Check that soffit vents are not blocked by insulation and that ridge vents or gable vents are clear. Poor ventilation reduces roof lifespan by 20-30%. See our ventilation guide.
12. Mold or mildew. Musty smell or visible mold growth on rafters or decking signals chronic moisture problems.
Surroundings Check
13. Overhanging branches. Tree limbs within 6 feet of the roof can scrape shingles, drop debris, and provide animal access. Trim branches back to at least 10 feet from the roof surface.
14. Moss, algae, or lichen. Dark streaks or green growth on shingles indicate moisture retention that accelerates deterioration. See our moss removal guide for treatment options.
15. Previous repair patches. Look for mismatched shingles, tar patches, or caulk around flashing. Excessive patching suggests systemic issues that a full replacement would resolve.
How to Score Your Inspection
- 0-2 issues found: Your roof is in good shape. Re-inspect in 6 months.
- 3-5 issues found: Schedule a professional inspection within 30 days.
- 6+ issues found: Your roof likely needs repair or replacement. Get your cost estimate now.
Next step: If your inspection revealed problems, know what a replacement would cost before calling contractors. Get your instant satellite estimate in 30 seconds.
What would your roof cost?
Enter your address. Our satellite does the rest in 30 seconds.
Alexander Chua
Alexander is a co-founder of SquareDash and writes about roofing technology, costs, and the homeowner experience.