Roof Inspection Guide: What to Check and When

Your roof is the most important barrier between your home and the elements — and it's also the most neglected. Most homeowners never think about their roof until water is dripping through the ceiling. By then, what could have been a $400 repair has turned into a $12,000 replacement.

A proactive inspection schedule is the single best thing you can do to protect your home's value and avoid emergency repair bills. Here's everything you need to know.

The general rule is twice a year — once in spring after winter weather, and once in fall before the cold sets in. You should also inspect after any major storm, high winds, or hail event.

Inspection schedule by situation:

• Annual minimum: Once per year for roofs under 10 years old in mild climates
• Twice yearly: Recommended for most homeowners
• After every major storm: Hail, high winds (50+ mph), or heavy snow loads
• When buying a home: Always get an independent roof inspection before closing
• Roof age 15+: Consider a professional inspection every year

A qualified roofing contractor will examine your roof from multiple angles — both from the ground and on top of the structure. Here's what they're looking for:

• Missing shingles: Even one missing shingle creates a water entry point
• Curling or cupping: Shingle edges that curl up or cup downward indicate age and heat damage
• Cracking and brittleness: Asphalt shingles become brittle as they age and lose granules
• Granule loss: Check your gutters — excessive granules mean your shingles are deteriorating
• Blistering: Bubbles on shingles indicate moisture trapped beneath the surface

Flashing is the metal material that seals joints around chimneys, skylights, vents, and valleys. It's responsible for a disproportionate share of roof leaks.

• Chimney flashing: Should be tight against the chimney with no gaps or rust
• Vent pipe boots: Rubber boots around pipes crack and shrink over time
• Valley flashing: The V-shaped channels where two roof planes meet are high-risk leak zones
• Skylights: Seals around skylight frames fail before the glass does

• Sagging gutters: Indicate improper slope or weight from debris
• Granule accumulation: Heavy granule deposits signal shingle wear
• Downspout placement: Water should discharge at least 6 feet from the foundation
• Fascia and soffit: Rotting wood behind gutters means water has been getting in

A good roof inspector doesn't stop at the surface. They'll also check your attic for:

• Water stains or dark spots on the decking (plywood under shingles)
• Daylight visible through the roof boards
• Proper ventilation — inadequate airflow causes heat buildup that destroys shingles from the inside
• Insulation condition — wet insulation loses R-value and promotes mold

You don't need to climb on your roof to catch early warning signs. Here's what to look for from the ground and inside your home:

• Shingles that look wavy, buckled, or uneven
• Dark patches or streaks (algae or moss growth)
• Visible gaps or missing shingles
• Sagging areas — any dip in the roofline is serious
• Gutters pulling away from the fascia

• Water stains on ceilings or walls — especially after rain
• Musty smell in the attic — indicates moisture and possible mold
• Daylight visible in the attic — a clear sign of gaps
• Higher energy bills — poor attic ventilation makes your HVAC work harder
• Peeling paint near the roofline — moisture is getting in somewhere

Most professional roof inspections cost between $150 and $400, depending on your roof's size and pitch. Many roofing contractors offer free inspections, especially after storm events — but be cautious of "free" inspections that come with high-pressure sales tactics.

For an unbiased assessment, hire an independent inspector rather than a contractor who profits from finding problems.

What affects inspection cost:

• Roof size (square footage)
• Roof pitch (steeper = more difficult and dangerous)
• Number of stories
• Complexity (multiple valleys, skylights, chimneys)
• Your region

Knowing your roof's expected lifespan helps you plan ahead:

If your roof is within 5 years of its expected end-of-life, budget for replacement rather than continuing to repair.

Not every roof problem requires full replacement. Here's a general framework:

Repair makes sense when:

• Damage is isolated to a small area (less than 30% of the roof)
• The roof is less than 15 years old
• The underlying decking is solid
• You're planning to sell within 2–3 years and want to maximize ROI

Replacement makes sense when:

• The roof is near or past its expected lifespan
• Damage is widespread across multiple areas
• You've had repeated leaks in different locations
• The decking (plywood) is rotted or soft
• You're planning to stay in the home long-term

Not all roofers are equal. Before hiring anyone to inspect or work on your roof:

1. Verify their license — roofing contractors must be licensed in most states
2. Check insurance — they need both general liability and workers' compensation
3. Look at reviews — focus on recent reviews that mention specific projects
4. Get multiple quotes — for any job over $1,000, get at least three written estimates
5. Avoid storm chasers — out-of-state contractors who appear after hail events often do substandard work and disappear

TrustedPro USA lists verified, licensed roofing contractors in your area. Every pro on our platform has been checked for active licensing and insurance before they're listed.

Roof problems don't announce themselves — they quietly get worse until you're dealing with a major repair or full replacement. A $200 inspection every year or two is the cheapest insurance policy you can buy for your home.

If it's been more than a year since your last inspection, or if you've had any significant weather events, now is the time to schedule one. Find a licensed roofer near you and get ahead of the problem before it gets ahead of you.

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