The local calendar is the whole point
Most roof maintenance advice assumes rain spread through the year. That is not what happens here. Summers are effectively dry for months, and then the wet season concentrates the year's rainfall into roughly November to March.
Two consequences follow, and they set the schedule.
The first is that problems are invisible for half the year. A roof can fail in June and give no sign of it until the first real storm, because nothing has tested it. The long dry spell is not evidence the roof is sound, it is simply an absence of evidence either way.
The second is that the first storm finds everything at once, and so does everyone else. When the first significant rain arrives, every roofer in the county spends the following fortnight on emergency calls. A problem you could have had fixed unhurriedly in October becomes a queue in November, at emergency rates, in the rain.
The single most useful habit
Book anything you already know about in September. Not because roofs fail seasonally, but because contractor availability does. The same job costs less and happens sooner in dry weather with a clear schedule than it does during the first week of storms.
What is actually worth doing before the wet season
- Clear the gutters and downspouts properly. Not just the visible leaves. A downspout that is blocked at the bottom backs water up into the gutter, over the edge and behind the fascia, which is how a gutter problem becomes a roof problem.
- Clear the valleys and the areas behind chimneys. Debris collects where two planes meet and where anything interrupts the flow. Water that cannot leave finds a way in instead.
- Cut back overhanging branches. Abrasion from a branch moving on the roof removes granules over a season, and any limb over a roof is a storm-damage risk that you can remove cheaply now.
- Look at the flashings and the pipe boots. These fail before the roof covering does. A rubber pipe boot collar that has cracked in the summer sun is a five-minute fix in October and an active leak in December. See flashing repair.
- Check the attic, not just the roof. Daylight where there should not be any, staining on the sheathing, damp insulation. The attic tells you about last winter, which is information you cannot get from the driveway.
- Deal with anything that leaked last year. Especially if it seemed to stop. Leaks that stop are leaks that stopped raining.
What is not worth paying for
A few things get sold as roof maintenance that do more harm than good, or simply little of anything.
- Pressure washing. Removes granules from shingles and forces water under laps. It makes a roof look better and measurably shortens its life.
- Blanket sealant application. Running sealant along every flashing edge as a precaution hides the places that need real attention, and sealant applied over a detail that is failing simply delays the diagnosis.
- Annual contracts on a simple pitched house roof. Reasonable on low-slope and commercial roofs with drains and seams. On a straightforward residential roof it usually costs more than reacting sensibly would.
- Coating a shingle roof. Coatings belong on low-slope membranes. On asphalt shingle they are not a recognised way to extend life, and they can interfere with how the roof sheds water.
Maintenance will not save a finished roof
There is a point where maintenance stops being an investment and becomes a way of postponing a decision. A roof that has lost granules across whole slopes, or that is leaking in several unrelated places, is not under-maintained. It is used up, and money spent maintaining it is money not going toward the replacement that is coming anyway.
If you are not sure which side of that line your roof is on, that is a reasonable thing to ask someone to tell you. Our repair or replace guide covers how the decision usually goes.
Maintenance questions
How often does a roof here actually need attention?
Once a year is enough for most houses, timed before the wet season rather than scattered through it. Add a look after any significant wind event. A roof under a large tree earns a second visit, because the debris load is the variable that changes fastest.
Is a maintenance plan worth paying for on a house?
Usually not, and this is where roofing sits differently from HVAC. An annual contract on a straightforward pitched residential roof tends to cost more over time than calling someone when there is a reason to. Scheduled maintenance genuinely pays on low-slope and commercial roofs, where drains and seams need regular attention.
Should I pressure wash my roof?
No. It strips granules from asphalt shingles, which takes life off the roof directly, and it drives water up under the laps. On tile it breaks things and forces water past the underlayment. If growth needs removing, that is a job for someone who will do it without a pressure washer.
What about moss and the black streaking?
The dark streaking common on north-facing slopes is algae, and it is mostly cosmetic. Moss is different: it holds water against the roof and lifts shingle edges as it grows, so it is worth removing. Neither is an emergency, and both are more common on shaded slopes than sunny ones.
Can I do any of this myself?
The useful parts, mostly from the ground. Clearing gutters, cutting back branches that overhang the roof, looking at the roof through binoculars after wind, and checking the attic for daylight or staining. What is not worth doing yourself is walking the roof, which on tile causes damage and on any roof is the part with actual risk attached.
