Roof maintenance calendar: spring, fall, and after a storm

The National Roofing Contractors Association recommends that homeowners schedule roof system inspections at least twice a year, in spring and autumn. That cadence is not arbitrary and it is not a sales cycle. It maps onto the two things that actually damage roofs: what winter does, and what blocked drainage does during the wet season.

Almost every emergency roof call traces back to something that was visible months earlier and cost a fraction to fix then. This is the calendar that catches those.

Spring: find what winter did

The spring visit is a damage assessment. Freeze-thaw cycling works water into small openings and expands it, so hairline problems from October are real openings by April. Ice damming leaves its signature at the eaves as staining on the underside of the deck.

• Flashing at every penetration. Chimney, vent stacks, skylights, wall junctions. Most leaks start here rather than in open field shingle, and lifted or separated flashing is the single most common finding.
• Pipe boots. The rubber collar around plumbing vents is often the first component on a roof to fail outright, and it is a cheap part.
• The eaves line, from inside the attic, for staining that indicates ice damming rather than a covering failure. The fix for that is usually insulation and ventilation, not roofing.
• Anything that moved. Lifted shingles, exposed nail heads, displaced ridge caps.

Autumn: clear the water’s path before it matters

The autumn visit is preparation rather than assessment, and the whole job is drainage. A roof sheds water by moving it downhill continuously. Anything that stalls that movement gives water time to find its way under the courses.

• Gutters and downspouts cleared and running. A blocked gutter backs water up under the lowest shingle course, which is exactly where the deck edge is least protected.
• Valleys cleared of debris. Valleys carry the highest water volume on the whole roof, and a dam of leaves in one is a leak with a date attached.
• Overhanging branches cut back. They abrade the surface in wind, drop the debris that blocks the valleys, and keep slopes damp enough for moss.
• Attic ventilation checked and intake vents unblocked, because insulation pushed over soffit vents during any other work is a common and invisible cause of winter moisture problems.

Add a third inspection after any significant storm, independent of the calendar. That is partly about damage and partly about timing: it is the window in which damage can still be tied to a dated weather event, which matters if it turns out to be a claim.

The attic tells you more than the roof does

Most homeowners inspect a roof by looking at it. The more informative half of the job is done from underneath, in daylight, with the lights off.

Daylight visible through the deck is a hole. Dark staining on rafters or sheathing shows where water has travelled, which is usually uphill of wherever it eventually shows on a ceiling. Damp or compressed insulation marks the path. And rusted nail points, or frost on them in winter, indicate condensation rather than a leak, which is a ventilation problem that gets misdiagnosed as a roofing one and repaired at the wrong end of the house.

That distinction is worth holding onto. A roof replaced to solve what was actually an attic ventilation failure will produce the same stains again within a couple of winters, on a new covering.

What not to do

Do not pressure wash an asphalt roof. It removes the mineral granules that protect the asphalt from ultraviolet light. IBHS treats granule loss as a genuine damage mode alongside dents and tears, and stripping it deliberately in the name of cleaning takes years off a serviceable covering.

Do not seal your way out of a flashing problem. A bead of roofing cement over a lifted flashing buys a season and hides the condition from the next person who looks. It also complicates the eventual proper repair.

Do not walk a roof you do not need to walk. Ground level with binoculars and the attic answer most questions. Steep, wet, frosted, or aged brittle coverings are all reasons to stay off, and shingles crack underfoot in cold weather.

What maintenance is actually buying

Round illustrative numbers chosen to show the mechanism, not market averages. A failed pipe boot caught in April is a small part and an hour of labour. The same boot left until it has been leaking through a winter takes wet insulation, a section of decking, and a ceiling with it, and the roofing is the cheapest line on that invoice.

That ratio is the whole argument, and it holds regardless of the specific figures where you live. Water damage compounds because it moves: from covering to deck, deck to insulation, insulation to ceiling, and eventually to framing. Each boundary it crosses multiplies the trades involved.

There is a second, less obvious return. A documented, maintained roof is easier to claim on, because the argument that damage is the result of neglect is the most common reason a storm claim gets reduced rather than denied outright. Maintenance is partly a technical exercise and partly the construction of a record.

What it does not buy is immortality. A covering at the end of its service life is at the end of it whatever the gutters look like, and the threshold for that is set out separately in our guide to when repair stops paying.

Keep the paperwork, because it becomes evidence

Dated photographs from each inspection are the cheapest insurance-adjacent asset a homeowner owns. When a storm claim turns on whether damage is new or pre-existing, prior-condition evidence is the single hardest thing to produce after the fact, and impossible to produce retrospectively.

Keep the same folder for invoices, the original permit, and any written inspection reports. It supports a claim, it supports a warranty position, and it shortens every conversation with a contractor. How that evidence gets used is covered in our guide to what an adjuster is deciding.

Questions readers actually ask

How often should a roof actually be inspected?

The NRCA recommendation is at least twice a year, in spring and autumn, and it is the standard worth following. Add a check after any significant storm. The spring visit finds what winter did; the autumn visit clears drainage before it is tested.

Can I do it myself or does it need a contractor?

The ground-level and attic parts are homeowner work and cost nothing. Getting on the roof is where the risk sits, and it is reasonable to bring in a professional for that, particularly once a roof is past fifteen years or if the slope is steep. Anyone offering a free inspection is also generating a lead, which does not make them wrong but is worth knowing.

Is moss actually damaging?

It holds moisture against the surface and can lift shingle edges as it thickens, so it is worth removing gently and cutting back the shade that lets it grow. What causes more damage than the moss is the pressure washer people use to remove it, which strips the granule layer.

Does maintenance keep my warranty valid?

Often it is a condition of it. Manufacturer and workmanship warranties commonly exclude damage arising from neglect or from unrepaired minor defects, and some require documented inspections. Read the terms rather than assuming, and keep the written reports, which is the reason the folder above matters.

Written by

Keith Guirao

Founder & Editor, ConsumersWeek

18+ years in consumer marketing and lead generation across insurance, personal finance, and home services. ConsumersWeek explains how these products are priced and sold so you can evaluate them with the same information the industry has.

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