Granule loss
Granules are the protective surface of the shingle. When they wear away, the darker asphalt layer becomes more exposed and the shingle can age faster.
UV exposureAgingHail impact
Roof Damage Guide
Shingle Wear, Storm Damage & Roof Repair
A roof can look fine from the ground while shingles are losing granules, lifting in the wind, cracking, bruising from hail, or letting water work underneath. This guide explains what roof damage looks like, why it matters, and how Robertson Roofing & Siding helps homeowners choose the right fix.
Wind & HailStorm damage examples
Wear & AgeShingle failure signs
Repair OptionsInspection-first guidance
Northwest Iowa roof inspections
For shingle wear, leaks, hail, high winds, and storm damage.
The basics
How asphalt shingles are supposed to protect your home
Asphalt shingles are a water-shedding system. Each course overlaps the row below it so rain, snowmelt, and debris move down the roof instead of into the house.
- Granules protect the asphalt layer from sun, weather, and everyday wear.
- Seal strips help shingle tabs bond together so wind cannot easily lift them.
- Flashing, valleys, ridges, vents, and roof edges protect the most vulnerable areas.
- Underlayment and decking sit below the shingles, but they should not be the first line of defense.
Normal roof aging
Why shingles wear out over time
Age, sun exposure, heat, freeze-thaw cycles, poor ventilation, debris, and repeated storms can slowly break down the parts of a shingle that keep the roof sealed and water-shedding.
Curling or cupping
Edges may lift as shingles dry out, lose flexibility, or age. Lifted edges make it easier for wind-driven rain to get underneath the shingle surface.
Lifted edgesWind riskOlder roofs
Cracked or brittle shingles
When shingles become brittle, they are harder to repair cleanly and more likely to crack, split, or break during storms or attempted spot repairs.
CrackingBrittle tabsRepair difficulty
What can happen next
When damaged shingles stop doing their job
A damaged shingle does not always create an immediate drip inside the house. Sometimes the first problem is hidden under the roof surface.
- Water can get below the shingle layer and stress the underlayment.
- Roof decking can soften, swell, stain, or rot if moisture continues getting in.
- Leaks may show up later around chimneys, valleys, vents, walls, ceilings, or attic areas.
- Small damaged spots can grow into larger repair areas if wind or water keeps working at them.
Inspection note: roof damage is not always obvious from the ground. Lifted tabs, creases, hail marks, missing granules, and flashing issues are easier to confirm up close.
High winds
What high wind does to shingles
High wind can break the seal between shingle tabs. Once a tab lifts, the shingle may crease, crack, loosen, or tear off completely. Wind damage often starts at roof edges, corners, ridges, valleys, and exposed slopes.
Lifted shingles
Wind can loosen the bond between shingle tabs. A lifted tab may settle back down and look nearly normal, but it may no longer be sealed correctly.
Creases, loose tabs, and missing shingles
A shingle that has bent backward can develop a weak crease. Missing shingles expose the layers underneath and should be repaired before more weather reaches the roof system.
Hail and impact
What hail damage can look like
Hail does not always punch a hole through the roof. It can knock away granules, bruise the shingle mat, mark soft metals, dent vents, and shorten the life of the roof even when leaks do not show up right away.
Impact marks
Hail impact may show as dark spots, circular marks, bruising, or areas where granules have been knocked loose.
Damaged repair areas
Some storm damage is isolated. Other storms affect multiple slopes, vents, gutters, ridge caps, valleys, and surrounding materials.
Long-term performance risk
Hail-damaged shingles may keep shedding water for a while, but impact damage can reduce their ability to perform over time.
Other acts of God
Other weather damage that breaks roofs down
High winds and hail get the most attention, but roofs also deal with ice, heavy rain, branches, debris, heat, and ventilation problems. These issues can work together and make small weaknesses worse.
Tree limbs and debris
Branches can scrape granules, puncture shingles, damage gutters, or leave debris trapped in valleys and transitions where moisture can sit.
Heat and ventilation wear
Excess attic heat and poor roof ventilation can stress shingles from underneath and contribute to premature aging.
Valleys, edges, and flashing
Water concentrates in valleys and around roof transitions. Damaged flashing, ridge caps, and edge details can create weak spots even when most shingles look good.
The proper fix
Can it be repaired, or does the roof need replaced?
The right answer depends on the age of the roof, how widespread the damage is, whether matching shingles are available, whether the shingles are brittle, and what the roof system looks like underneath.
1
Inspect the damage
Look at the shingles, roof edges, ridges, valleys, flashing, vents, gutters, soft metals, and any interior leak signs.
2
Check the roof condition
Age, brittleness, previous repairs, ventilation, decking condition, and shingle availability all affect the recommendation.
3
Choose the right fix
Small isolated damage may be repairable. Widespread storm damage or an aged, brittle roof may call for replacement.
When a repair makes sense
A repair may be the right call when the damage is limited, the surrounding roof is still flexible and sound, and the new materials can blend with the existing roof.
When replacement may be better
Replacement may be the better long-term option when damage is widespread, the shingles are brittle, the roof is near the end of its life, or repeated repairs no longer make sense.
Storm claims
Storm damage and insurance documentation
If your roof was damaged by wind, hail, or another storm event, Robertson Roofing & Siding can inspect the roof, document visible damage, and explain the repair work that appears to be needed.
- Photos of visible roof damage and related exterior damage.
- Notes on affected roof slopes, shingles, flashing, vents, gutters, and other roof components.
- Repair or replacement recommendations based on roof condition.
- Clear communication so homeowners understand the process and next step.
Coverage note: your insurance provider determines coverage. A professional inspection does not guarantee coverage, but it can help clearly document what damage is present.
Do not ignore lifted, missing, or bruised shingles.
Roof damage can start small, especially after wind or hail. If your roof has been through a strong storm, a quick inspection can help determine whether the roof is still sealed and functioning properly.
Roofing examples
Roofing details and finished-work examples
These examples show common roof details, repair areas, and finished roofing work. A professional inspection can help determine whether your roof needs a small repair, additional maintenance, or replacement.
Flashing and chimney areasCommon leak-prone transition points.
Small shingle repairA focused look at small repair work.
Finished residential roofA finished roof example from the area.
Schedule a roof inspection
Think your roof may have shingle wear, wind damage, or hail damage?
Robertson Roofing & Siding can look over the roof, explain what is visible, and recommend the right next step for repair, maintenance, or replacement.