Most roof problems are far cheaper and easier to fix when they are caught early, and the way you catch them early is by looking. You do not need to be a roofing expert to do a basic roof check, and a homeowner who knows what to look for can spot the warning signs of trouble long before they turn into a leaking ceiling. On the coast, where our wet climate is relentless on roofs, that habit is worth its weight in gold.
This is a practical, plain-language checklist you can actually use, organized by where to look: from the ground, around the property, and up in the attic. A good time to run through it is twice a year, in spring after the winter storms and again in fall before the wet season returns. Here is exactly what to look for, and what each sign means. One important note first: stay safe, and leave the actual climbing onto the roof to professionals.
A safety note before you start
You can do almost all of a useful roof inspection without ever leaving the ground or climbing a ladder onto the roof itself. Walking on a roof is genuinely dangerous, especially on the coast where surfaces are often wet, mossy, and slippery, and it is easy to damage the roof underfoot as well. Use binoculars from the ground, check what you can see from a stable position, and inspect the attic from inside. For anything that requires getting onto the roof, call a professional. No inspection finding is worth a fall.
What to check from the ground
Start by walking around your house and looking up at the roof from every side, ideally with a pair of binoculars. You are looking for anything that breaks the smooth, even, intact appearance a healthy roof should have.
The shingles
- Look for shingles that are missing, leaving bare patches where the underlayment shows.
- Look for shingles that are curling at the edges, buckling, or lying unevenly, which signals aging material losing its seal.
- Look for cracked or broken shingles, particularly after a windy or stormy stretch.
- Look for dark streaks or patches that may indicate granule loss or algae, common in our damp climate.
A few isolated issues may be a simple repair. Widespread problems across the whole roof point to a roof nearing the end of its life. (If you notice several of these signs accumulating, read our guide on the 7 signs your roof needs replacing before winter to determine your next steps).
The roofline and overall shape
Step back and look at the lines of the roof. They should be straight and even. Any sagging, dipping, or waviness where the roof should be flat is a warning sign of possible structural trouble underneath, often from water damage to the decking. This is one of the more serious things you can spot from the ground, and it warrants a professional look promptly.
Moss and debris
On the coast, check for moss, especially on shaded, north-facing slopes. A little is normal and manageable. Thick, established moss is a problem, because it traps moisture and lifts shingles. Also note any piles of leaves, needles, or branches sitting on the roof, since debris holds moisture and feeds moss growth.
What to check around the roof’s edges and features
Many roof problems start not in the open field of shingles but at the edges, joints, and features where different parts meet. These are the vulnerable points where water most often finds its way in.
Flashing
Flashing is the metal that seals the joints around chimneys, skylights, vents, and where the roof meets walls. It is one of the most common places for leaks to begin. From the ground or a safe vantage point, look for flashing that appears rusted, lifted, bent, or separated. On the coast, salt air corrodes metal flashing faster, so this deserves attention. Damaged flashing is a frequent and fixable cause of leaks, but only if it is caught.
Gutters and downspouts
Your gutters tell you a lot. Check that they are clear and draining properly, not clogged with debris or sagging away from the house. Then look at what is in them. Finding a buildup of shingle granules—that coarse, sandy black grit—is a sign your shingles are wearing down. Clogged gutters also cause water to back up under the roof edge, so keeping them clear is both a maintenance task and an inspection clue.
Vents and seals
Look at the vents, pipes, and other things that penetrate the roof. The seals and boots around them break down over time and are common leak points. Any cracked, dried-out, or lifted seal around a roof penetration is worth flagging for repair before it lets water in.
What to check in the attic
Some of the most valuable inspection happens inside, from your attic, where you can see the underside of the roof and catch evidence of water intrusion that is invisible from outside. Pick a clear day and, if possible, a daytime hour so you can use natural light as a tool.
Look for daylight
With the attic lights off, look up at the roof boards. Any spots of daylight coming through mean there are gaps or holes in the roof, and where light gets in, water will follow. This is a direct, unambiguous sign of a problem that needs addressing.
Look and smell for moisture
Check the underside of the roof and the insulation for water stains, dark patches, dampness, or any sign of mould. A musty, damp smell in the attic is itself a warning, even if you cannot immediately see the source. Moisture in the attic means water is getting in somewhere, and the wet coastal climate makes this a particularly important thing to check.
Check the insulation
Wet, compressed, or stained insulation points to a moisture problem above it. Healthy attic insulation should be dry and evenly distributed. Damp insulation is both a symptom of a leak and a problem in its own right, since it loses its effectiveness when wet.
What to do with what you find
Once you have run through the checklist, sort what you found into rough categories. Minor items like a bit of debris, a small amount of moss, or slightly clogged gutters are maintenance tasks you can stay on top of. Clear warning signs like missing shingles, damaged flashing, sagging, daylight in the attic, or any sign of water intrusion are reasons to bring in a professional for a proper assessment.
The whole point of regular inspection is to catch problems while they are small and cheap. A homeowner who runs this checklist twice a year and acts on what they find will almost always avoid the nasty surprise of a major leak. When in doubt about anything you spot, it is always worth getting a professional opinion rather than guessing, especially with anything that would require getting onto the roof.
Frequently asked questions
How often should I inspect my roof?
Twice a year is a good rhythm on the coast: once in spring after the winter storms, and once in fall before the wet season returns. An extra check after any major storm is also wise. Regular inspection is the most reliable way to catch small problems before they become leaks.
Should I climb onto my roof to inspect it?
No. Most of a useful inspection can be done from the ground with binoculars and from inside the attic. Walking on a roof is dangerous, particularly when it is wet and mossy as coastal roofs often are, and you can damage it underfoot. Leave anything requiring roof access to a professional. You can see how our teams safely handle hands-on assessments by visiting our dedicated roof inspection or maintenance service page.
What is the most common place for a roof leak to start?
Often the flashing around chimneys, skylights, vents, and wall joints, along with the seals around roof penetrations. These are the vulnerable points where water finds its way in, and on the coast salt air speeds up the corrosion of metal flashing, so they deserve close attention.
What does it mean if I find granules in my gutters?
It usually means your shingles are wearing down and shedding their protective granules, a normal part of aging that becomes significant as a roof nears the end of its life. A little is normal. A lot, collecting noticeably in the gutters, is a sign to have the roof assessed.
The bottom line
A twice-yearly roof inspection is one of the simplest, highest-value habits a coastal BC homeowner can build. From the ground, check your shingles, roofline, moss, flashing, and gutters. In the attic, look for daylight, moisture, and damp insulation. Catch the small things early, act on the warning signs, and stay safely off the roof itself, leaving that to the professionals.
If your inspection turns up anything that concerns you, or you would simply like an expert set of eyes on your roof, the team at Shoreline Roofing is happy to take a look and give you an honest assessment. Head over to our contact page to reach out anytime, and we will help you keep your roof ready for whatever the coast throws at it.