Troubleshooting reference
Start with symptoms, rule out homeowner-safe basics, and escalate conservatively when safety, structure, utility service, or water damage is involved.
Emergency
Active roof leak during rain or snow melt
Likely causes
- Failed flashing
- Missing/damaged shingles
- Ice dam or roof penetration leak
Homeowner-safe check
Catch water inside if safe; do not climb onto a wet, icy, or storm-damaged roof.
When to call
Call immediately if water reaches ceilings, electrical fixtures, insulation, or structural framing.
Call soon
Shingles are missing, creased, or lifted after wind
Likely causes
- Wind uplift
- Poor fastening
- Aged brittle shingles
Homeowner-safe check
Photograph from the ground and tarp only from a safe lower roof or hire emergency tarping.
When to call
Call soon; exposed underlayment can leak before the next storm.
Call soon
Ceiling stains appear around chimneys, walls, or vents
Likely causes
- Step/counterflashing failure
- Plumbing boot crack
- Condensation mistaken for roof leak
Homeowner-safe check
Mark stain edges with date and check attic only if access is safe and dry.
When to call
Call if stains grow, insulation is wet, or the leak follows wind-driven rain.
Routine
Granules collect in gutters or shingles look bald
Likely causes
- Normal early shed on new roof
- Aging asphalt
- Hail or foot-traffic damage
Homeowner-safe check
Inspect gutters from a ladder only if safe; compare slopes that face sun and weather.
When to call
Call routinely when bald areas expose asphalt mat or roof is near expected service life.
Call soon
Ice dams form at eaves
Likely causes
- Heat loss into attic
- Poor ventilation
- Clogged gutters or snow load
Homeowner-safe check
Do not chop ice with tools; use safe snow removal from the ground where possible.
When to call
Call for leak control now and insulation/ventilation correction after winter.
Emergency
Roof deck feels soft or sags
Likely causes
- Rotten sheathing
- Long-term leak
- Structural rafter/truss issue
Homeowner-safe check
Stay off the roof and keep attic foot traffic on framing only if entry is necessary.
When to call
Call immediately for structural assessment before adding load or reroofing over it.
Call soon
Flat or low-slope roof has ponding water
Likely causes
- Insufficient slope
- Clogged drains/scuppers
- Membrane depression or insulation compression
Homeowner-safe check
Clear visible drains only if access is safe; do not puncture membrane to release water.
When to call
Call soon if water remains after 48 hours or seams/penetrations sit underwater.
Routine
Moss, algae, or black streaks cover shingles
Likely causes
- Moist shaded roof
- Algae growth
- Debris retaining moisture
Homeowner-safe check
Use low-pressure manufacturer-approved cleaner; never pressure-wash asphalt shingles.
When to call
Call routinely if growth lifts shingles or roof access is unsafe.
Call soon
Attic shows frost, mold smell, or wet nails
Likely causes
- Bathroom/kitchen fans venting into attic
- Insufficient attic ventilation
- Air leaks from living space
Homeowner-safe check
Confirm fans vent outdoors and avoid blocking soffit vents with storage/insulation.
When to call
Call for roofing and insulation/air-sealing assessment if moisture persists.
Routine
Roofing bid skips tear-off, flashing, ventilation, or permit details
Likely causes
- Bid not apples-to-apples
- Storm-chaser shortcut
- Warranty-ineligible install
Homeowner-safe check
Ask for line items before signing; manufacturer warranties depend on system details.
When to call
Call another roofer if they refuse deck inspection, flashing scope, ventilation math, or warranty paperwork.
Maintenance schedule
Seasonal tasks
Spring
- After spring storms, check ceilings and attic sheathing from inside before anyone walks the roof, then photograph gutter granules.
Summer
- In summer, look from the ground for lifted tabs, cracked pipe boots, blistered low-slope membrane, and blocked ridge intake paths.
Fall
- Before leaf drop ends, clear valleys and gutters safely so water does not back under starter courses or step flashing.
Winter
- During snow season, watch eaves for ice dams and attic nails for frost instead of chopping ice against shingles.
Interval tasks
Monthly
- Monthly in storm areas, compare roof planes for missing shingles, exposed fasteners, sagging deck lines, and displaced metal trim.
Annual
- Yearly, inspect attic ventilation paths, bath-fan terminations, chimney counterflashing, skylight curbs, and plumbing boots from safe access.
Every few years
- Every few years, review roof age, prior repair locations, shingle warranty tier, and whether decking or flashing should be budgeted separately.
Cost components
Labor
A realistic labor line covers tear-off, deck inspection, flashing detail, underlayment, shingle/metal/membrane installation, ventilation work, safety setup, and cleanup, then adjusts for roof pitch, tear-off layers, staging, flashing detail, decking discovery, ventilation, and weather dry-in time.
Materials
Material pricing should call out shingles, membranes, underlayment, ice barrier, flashing metal, vents, fasteners, boots, decking, and disposal; the baseline remains shingles/metal/membrane, underlayment, ice barrier, flashing, boots, vents, fasteners, decking, drip edge, and disposal containers.
Permits and inspections
Do not leave permitting vague when the scope includes full replacements, structural deck repairs, historic districts, skylights, and insurance code upgrades may. Inspection ownership affects schedule.
Broad range discipline
The range changes at a small leak repair, a flashing rebuild, and a full roof system replacement. Spot repairs are lower-ticket; flashing/valley repairs are mid-range; full replacement, decking, steep/high roofs, and specialty materials are major projects.
What moves price
Pushes price up
- Steep or high roof; added cost is usually tied to roof pitch
- Decking replacement; added cost is usually tied to tear-off layers
- Complex flashing/chimneys/skylights; added cost is usually tied to staging
- Insurance supplements and code upgrades; added cost is usually tied to flashing detail
Can reduce price
- Single-layer tear-off; lower pricing is likelier when shingles is clearly defined
- Simple gable roof; lower pricing is likelier when membranes is clearly defined
- Good driveway access; lower pricing is likelier when underlayment is clearly defined
- Standard asphalt shingle system; lower pricing is likelier when ice barrier is clearly defined
Hiring red flags
- The written scope cannot point to ice-and-water shield or drip edge left out of a replacement quote when challenged.
- There is no measurable way in the proposal to verify attic ventilation and intake path before shingle selection.
- The bargain price omits decking unit prices, flashing replacement, or permit requirements before any photo record exists.
- Post-job coverage is vague about manufacturer system registration, workmanship leak response, and transfer terms and return timing.
- Storm chaser asks for contingency or insurance assignment before inspection.
- No line item for flashing, ventilation, drip edge, or deck replacement pricing.
- Promises insurance approval or deductible waiver.
- No manufacturer credential or warranty registration process.
Contract checklist
- Roof system brand, shingle or membrane line, underlayment, starter, ridge, drip edge, and ice barrier with brands, sizes, locations, and exclusions.
- Tear-off layers, decking inspection method, per-sheet replacement price, and rotten fascia handling before work starts, including who schedules inspections.
- Flashing scope for chimneys, sidewalls, skylights, valleys, pipe boots, vents, and satellite penetrations for access, protection, cleanup, and disposal.
- Ventilation calculation, attic intake correction, dry-in plan, weather delay rules, and magnet cleanup as unit pricing or written allowances.
- Manufacturer warranty tier, workmanship leak term, registration deadline, insurance supplement process, and photo closeout; final acceptance includes photos, manuals, warranty entries, and lien-release records.
- Roof system brand, shingle/metal/membrane type, underlayment, ice barrier, drip edge, and ventilation.
- Tear-off layers, decking unit price, flashing replacement, pipe boots, skylights, and chimneys.
- Permit, inspection, weather dry-in plan, magnet cleanup, and landscape protection.
- Manufacturer and workmanship warranty registration and transfer terms.
- Insurance supplement/change-order process if claim-funded.
Warranty norms
Roofing coverage splits between workmanship and manufacturer material terms. Architectural shingles may advertise lifetime limited coverage, but non-prorated periods, algae clauses, wind ratings, ventilation requirements, accessory use, and registration decide the real value.