Cracked shingles are asphalt shingles that have split through the surface or all the way through the mat, opening a path for water to reach the underlayment and deck. A single cracked shingle is usually a quick repair. Cracking that shows up across many slopes, or along the ridge, tells a different story about the roof's age and condition.
Spotted a split shingle after a storm or a hot spell? Call Cannon Roofing at (940) 627-1045, day or night, or ask for an inspection on our contact page.
The three kinds of cracking roofers see most
Thermal cracking
North Texas roofs swing from blistering afternoons to cool nights, and in winter from mild days to hard freezes. Shingles expand and contract with every swing. Over time that movement opens cracks, often as straight vertical splits running up from the bottom edge of a tab or following the joint in the course below. Thermal splitting frequently appears in a repeating pattern across a slope.
Brittle, aging shingles
As asphalt weathers and loses its oils, it stops bending and starts breaking. Aged shingles develop a web of fine surface cracks, sometimes called crazing, and tabs snap when wind lifts them. At this stage, cracking usually comes with granule loss and curling.
Cracked ridge caps
Ridge cap shingles are folded over the peak, so they're already under stress. Heat, age and cold snaps crack them along the fold, and hail tends to hit them hard because they sit highest on the roof. A cracked cap leaves the ridge nails and vent opening exposed. Our article on starter strips and ridge cap shingles explains why these pieces matter so much.
Other causes worth ruling out
- Nail pops pushing up from underneath and splitting the shingle above
- Foot traffic from satellite, solar or HVAC work on a hot or cold day
- Tree limbs rubbing or dropping onto the roof
- Hail strikes that fracture the mat, which can look like a crack weeks later
How to tell if cracked shingles are a real problem
From the ground, cracks often look like thin dark lines or tabs that sit slightly out of line with their neighbors. Binoculars help. Inside, look for water stains on the ceiling, damp spots on the attic decking or daylight around nail holes.
A crack becomes a leak when it lines up with the gap between shingles in the course below, or when it sits near a nail. That's why a roof can have visible cracking for a while with no leak, then suddenly leak after one heavy storm.
How a roofer replaces a cracked shingle
A proper single-shingle replacement is more careful than smearing sealant into the crack.
- Break the seal above. The roofer gently separates the adhesive strip on the course above the damaged shingle, ideally when shingles are warm enough to bend without breaking.
- Remove the nails. Nails holding the cracked shingle, and those from the course above that pass through it, are pulled with a flat bar.
- Slide in a new shingle. A matching shingle goes in, aligned with the courses around it.
- Nail in the right spot. New nails go in the manufacturer's nail zone, not through old holes.
- Reseal. Tabs on the new and lifted shingles are sealed down so wind can't catch them.
What about sealant-only patches?
A bead of roofing sealant under and over a crack can keep water out for a while on a roof that's otherwise sound, and it's a reasonable stopgap before a proper repair. It doesn't restore the shingle's strength, and it breaks down in the sun, so it shouldn't be the permanent answer.
Matching the replacement shingle
Color and profile matter for looks and for how the patch sheds water. If your shingle line has been discontinued, a roofer will find the closest match and explain how noticeable it will be before starting.
When cracked shingles mean it's time to reroof
Individual repairs stop making sense when:
- Cracking appears on several slopes, not just one area
- Neighboring shingles crack as soon as a roofer tries to lift them
- Granule loss, curling and cracking are all showing up together
- You've had repairs in different spots within a short span and new leaks keep appearing
At that point the shingles are telling you the whole system is near the end of its useful life. Our guide to choosing between roof repair and replacement walks through the decision in more depth.
Getting cracked shingles fixed by Cannon Roofing
We'll check each cracked area, test whether surrounding shingles are still flexible enough to repair, look at the ridge caps and head into the attic to see whether water has already reached the deck. You'll get photos and a plain recommendation. For isolated damage, our roof repair crews replace shingles the right way, nail by nail.
Since 1994, Cannon Roofing has worked on homes across Wise County and North Texas out of Decatur. Crews are factory trained, and every employee holds the Technician Seal of Safety, which requires background checks, drug testing and insurance. We offer a free inspection and estimate and back our work with written warranties.
Frequently asked questions
Can cracked shingles be repaired in cold weather?
Yes, but shingles are stiffer when cold, so lifting the course above takes extra care to avoid cracking more of them. In an urgent situation a temporary seal can hold until a milder day allows a full replacement.
Does homeowners insurance cover cracked shingles?
Cracking from hail or a specific windstorm may be covered as storm damage. Cracking from age and heat is generally treated as wear. An inspection that documents the pattern helps you and your insurer tell them apart.
Are cracked ridge caps an emergency?
Not always, but they sit over the roof's highest seam and often over a ridge vent. If caps are split or missing, get them looked at soon, because rain driven along the ridge can reach the attic quickly.
Have cracked shingles you want looked at before the next storm? Call Cannon Roofing at (940) 627-1045, we're available around the clock, and we'll inspect, photograph and explain whether a repair or a new roof makes more sense. Or send a message from our contact page.