The Fall Roof & Gutter Checklist for Vancouver Homeowners

Why September Is the Deadline, Not October

Vancouver averages somewhere around 40 inches of rain a year, and the overwhelming majority of it falls between October and May. Once that pattern sets in, two things happen at once: the work gets harder and the consequences get more expensive. A gutter you could have cleared in an hour on a dry Saturday becomes a ladder job in the rain. A small flashing gap that would have been a quick repair becomes a stained ceiling and wet insulation. Every fall we get the same calls in the same order — clogged gutters in late October, ceiling stains in November, emergency tarping in December. Nearly all of them trace back to something that was visible and cheap to fix in September.

1. Clear the Gutters — Including the Downspouts

This is the single highest-value hour you can spend on your house this month. Most homeowners scoop the trough and stop there, but the trough is rarely the real problem. The clog is usually at the downspout elbow, where fir needles and shingle grit compact into something closer to felt than debris. Water backs up, sheets over the front edge, and soaks the fascia board it is hanging from.

• Scoop the trough first, then flush with a hose and watch the bottom of the downspout — if flow at the bottom does not match what you put in the top, you have a clog.
• Check that the gutter still slopes toward the downspout. Sagging hangers are common on older homes and cause standing water even in a clean gutter.
• Look at the fascia behind the gutter while you are up there. Dark staining or wood that gives under a screwdriver tip means water has been overflowing for a while.
• If you have gutter guards, do not assume they are working. Fir needles get through most designs and pack down on top of the screen.

2. Follow the Water Past the Downspout

Clean gutters that dump straight against the foundation just move the problem four feet down. Walk the perimeter of the house and look at where each downspout actually discharges. You want water carried well away from the foundation and away from any grade that slopes back toward the house. Extensions, splash blocks, or a tie-in to a drain line all work — what does not work is a downspout emptying into a bed right against the siding, which is one of the more common causes of a wet crawlspace in this area.

3. Deal With Moss Before the Rain Feeds It

Moss is the number one roof killer in Clark County, and fall is when it wakes up. The mechanism is simple and destructive: moss grows at the bottom edge of a shingle, expands as it takes on water, and physically lifts the shingle. Once that edge is lifted, wind-driven rain gets underneath and reaches the underlayment and decking. From the ground it just looks green. From the attic, two years later, it looks like rot.

• Look at the north-facing slope and anything under tree cover first — that is where it always starts.
• Do not pressure wash a composition roof. It strips the granules that protect the shingle and can void a manufacturer warranty.
• Treatment plus gentle removal works if the shingles still have granule coverage. If the moss has already lifted shingles and softened the deck, cleaning alone will not fix it.
• Zinc or copper strips near the ridge slow regrowth, but they are a maintenance aid, not a substitute for removal.

4. Take a Flashlight Into the Attic

Ten minutes in the attic on a dry day tells you more about your roof than an hour of looking at it from the driveway. You are looking for daylight where there should not be any, dark staining on the underside of the sheathing, rusty nail tips, wet or compressed insulation, and any smell of must. One thing worth knowing: water travels along rafters before it drips, so the stain on your ceiling is often several feet from where the water is actually getting in. That is exactly why leaks get traced from inside rather than patched from the spot that looks wet.

5. Check the Flashing, Not Just the Shingles

In our experience most roof leaks are not failed shingles at all — they are failed flashing. Flashing is the metal that seals every place the roof plane is interrupted, and those transitions are where water finds a way in. Shingles in the middle of a slope rarely leak. The intersections almost always do.

• Chimney flashing, especially the counter-flashing mortared into the brick, which loosens over time.
• Skylight perimeters — the single most common leak point on homes that have them.
• The valleys where two roof planes meet, which carry far more water volume than anywhere else on the roof.
• Where a roof meets a wall, such as under a second-story overhang or beside a dormer.
• Plumbing vent boots, where the rubber collar cracks with UV exposure and is a cheap fix if you catch it.

6. Cut Back Anything Touching the Roof

Branches resting on shingles abrade the surface every time the wind blows, and overhanging limbs drop the needles and leaves that clog everything downstream. Overhanging cover also keeps a roof section shaded and damp, which is precisely the environment moss wants. Aim for clearance of several feet between the tree and the roof plane. This is also the last comfortable month to do it — trimming in a Pacific Northwest December is nobody's idea of a good weekend.

7. Photograph Everything Now

Take a few minutes to photograph your roof, gutters, siding and the general condition of the exterior while it is dry and intact. It costs you nothing, and if a windstorm takes shingles off in January you will have dated before-photos showing the roof was sound. That distinction matters a great deal in an insurance conversation, and almost nobody has the photos when they need them.

What Not to Do Yourself

Plenty of this list is reasonable homeowner work. Some of it is not. Do not walk a wet roof, a steep roof, or a roof you have any doubt about the structural soundness of — soft decking gives way without warning, and that is the injury we hear about every year. Do not raise a metal ladder without scouting for overhead power lines. Do not pressure wash shingles. And if you find active water intrusion, a soft spot in the decking, or moss that has lifted shingles, that is the point to stop and have someone look at it who does this for a living.

A Realistic Timeline for the Rest of the Season

If you are working through this list now, you have time. Gutter clearing and tree trimming can happen any dry weekend this month. Moss treatment is best done before the heavy rain starts. Flashing repairs are small jobs in September and become emergency calls in December. Full roof replacements need a genuinely dry stretch, which in Clark County means the window is closing — if an inspection tells you the roof has a year or two left, you are budgeting for next summer, and that is a much better conversation to have now than during a leak.

Not Sure What You Are Looking At?

Roof inspections are free with every estimate at Santiago General Contractor, and there is no obligation attached. We get on the roof, check the attic where we can, photograph what we find, and give you a written assessment of what needs doing now versus what can wait. Sometimes that answer is nothing at all — and knowing that before the rain sets in is worth the call. Reach us at (360) 718-6290, Monday through Saturday.