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How to read your own roof from the ground

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Aug 2026 . A walk-around you can do with a phone camera, and how to tell an urgent finding from one that can wait.

Roofer photographing shingle courses during a roof inspection

You do not need a ladder to learn a great deal about your own roof. Most early warnings are visible from the yard, the sidewalk and an upstairs window. The point of looking is not to diagnose anything yourself. It is to notice a change early enough that a repair is still a repair, rather than a replacement plus a ceiling.

This is the same perimeter walk our crews do before anyone sets a ladder. Do it twice a year, and after any storm.

Start by choosing your vantage points

Stand far enough back that you can see a whole roof plane at once. From directly under the eave you see almost nothing. From across the street you see the shape of the roof, which is where the important information lives. Walk the full perimeter and stop at each corner, because a corner shows you two slopes at the same time and lets you compare them.

An upstairs window helps too, because it gives you a shallow angle across the shingles that shows lifting you cannot see from below. Take photos rather than relying on memory. Dated photos from this year are the only fair comparison for next year.

Read the straight lines first

A roof is a set of straight lines: the ridge along the top, hips running down the corners, valleys where two slopes meet, rake edges at the gable ends, and dozens of parallel shingle courses in between. Those lines are laid straight. When one of them stops being straight, something underneath has moved.

Look along the ridge with one eye closed, the way you would sight along a board. A dip in the middle usually means a structural issue rather than a shingle issue, and it deserves a proper look. Waves or dips between rafters can point to decking that has taken on moisture. Shingle courses that wander out of line often mean the deck below them is no longer flat.

Then read the field of the roof

The field is the large open area of shingles. It is where most of the surface is, and where age shows up first.

Granule loss

Asphalt shingles are protected by a coat of mineral granules. As they wear off, the asphalt beneath is exposed and ages fast in Louisiana sun. From the ground, granule loss reads as shiny or dark patches that look different from the rest of the slope, often heaviest below valleys and downspout outlets where water concentrates.

Lifted, curled or missing tabs

Look for shingles that sit proud of the ones around them, corners that curl up, or gaps where a tab has gone entirely. A single missing tab after a storm is a repair. A slope where many tabs are lifted along the same line usually means the seal strip has let go across that run, which is a bigger conversation.

Check the details that leak first

Roofs rarely leak in the middle of a slope. They leak where the field is interrupted.

Flashing and penetrations

Every chimney, skylight, vent pipe, satellite mount and wall junction is a hole in the roof that has been made watertight with metal and sealant. From the ground, look for flashing that has lifted away from a wall, rust streaks running down from a joint, or a rubber pipe boot that has split or gone chalky. Pipe boots are one of the most common sources of a mystery leak on a roof that otherwise looks fine.

Valleys

Valleys carry more water than any other part of the roof. Look for debris packed into them, shingles that have worn thin along the centre line, or a valley that no longer runs as a crisp straight channel. Standing debris holds water against the roof long after the rain stops.

Let the gutters tell on the roof

Gutters collect evidence. Granules building up in the trough or washing out at the downspout mean the shingle surface is shedding. A gutter that sags, pulls away from the fascia, or overflows in ordinary rain is loading water into the fascia and soffit, which rots the timber the roof edge is fastened to.

Look at ground level too

Walk the flower beds and the driveway after wind. Shingle fragments, granules and roofing nails on the drive all came off the roof and were not supposed to. Check whether tree limbs now touch the roof, because limbs abrade shingles and drop the debris that clogs valleys.

Then look inside

The other half of a ground-level inspection happens indoors. Go into the attic during daylight with the lights off. Pinholes of daylight through the decking, dark staining around nails or on the underside of the deck, damp or matted insulation and a musty smell all indicate water is getting in somewhere above.

Downstairs, check upstairs ceilings and the walls beside chimney chases for stains. A stain that is still growing is active. A dry, unchanged stain may be historic, but only an inspection will tell you which.

What a ground read cannot tell you

Plenty of roof condition is invisible from the yard. You cannot see how the underlayment is holding up, whether nails were driven high or overdriven, how the decking is fastened, or what is happening on a low-slope section behind a parapet. You also cannot judge the seal strip between shingles, which is what actually holds a roof down in wind.

So treat the walk-around as triage. It tells you whether to call, and it gives whoever comes out a head start on where to look. It is not a verdict on the roof.

What to do with what you found

Write it down. A short list of what you saw, on which slope, with dated photos, beats any description over the phone. Anything actively leaking, any daylight through the deck and any sag in the ridge should be looked at now. Granule loss and a single lifted tab can wait for a scheduled visit.

Our inspection is free, and it comes back to you as photographs of every slope with a written summary of what we found and what we would do about it. If the answer is that your roof is fine for now, that is what the report will say. Call the office on (225) 555-0142, or send your photos to [email protected] and we will tell you whether it warrants a visit.


Next: what an adjuster is actually looking for when storm damage is the reason you are looking up in the first place.

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