How long does a typical roof replacement take from tear-off to finished cleanup?

Most residential roofs in King County take one to three days depending on size, pitch, and material, though steep or complex roofs with multiple valleys can run longer. Weather is the biggest variable here, since crews need a dry window to keep the decking protected once the old roofing is removed. A reputable contractor will build weather delays into their schedule rather than rushing work during a rain break.

What questions should I ask before hiring a roofing contractor?

Ask for proof of current WA state contractor licensing and liability insurance, and confirm whether they pull their own permits or expect you to. Ask how they handle hidden decking damage discovered mid-job and whether that's a change order or already priced in, since this is where surprise costs usually come from. Also ask whether the crew doing the physical work is employed by the company or subcontracted, since that affects who's accountable if something goes wrong.

Is architectural shingle roofing actually worth the extra cost over standard 3-tab shingles here?

In a climate with this much sustained rain and wind, yes — architectural shingles are heavier, rated for higher wind speeds, and generally last 10 or more years longer than 3-tab shingles. The price difference upfront is real, but spread over the added service life it's usually the better value, especially on a roof exposed to open wind off the Sound. It also tends to shed moss and debris more effectively due to its thicker profile.

Does homeowners insurance typically cover roof replacement, or only repair?

It depends entirely on the cause of damage and your policy's specific language — sudden damage from a windstorm or falling tree is often covered, while gradual deterioration from age or lack of maintenance typically isn't. Many policies also shift from replacement-cost to actual-cash-value coverage once a roof passes a certain age, which can significantly reduce a payout. It's worth reading your policy's roof-specific clauses before you assume a claim will cover a full replacement.

Why does moss seem to come back every year no matter how often we clean the roof?

King County's combination of shade from mature trees, mild year-round temperatures, and long stretches of damp weather creates conditions moss thrives in, so a one-time cleaning only resets the clock rather than solving the underlying cause. Zinc or copper strips installed near the ridge release trace metals with each rain that inhibit regrowth much longer than a manual cleaning alone. Trimming back overhanging branches to increase sun exposure and airflow also makes a real difference in how fast it returns.

Roof Repair vs. Replacement: How to Decide

Why This Decision Trips Up So Many Homeowners

Every roof problem looks like an emergency the first time you see it — a stain on the ceiling, a shingle in the yard after a windstorm, a contractor knocking on your door after a hailstorm two towns over. The hard part isn't noticing something is wrong. It's figuring out whether that something is a $400 fix or a $15,000 one. Roofers have a financial incentive to lean toward whichever answer benefits them, which is exactly why homeowners need a framework they can apply themselves before they ever get a quote.

In King County, that decision gets more complicated because of what our climate does to a roof over time. Salt-laden air moving in off Puget Sound, months of driving rain, and a moss season that can run from October through May all work on a roof simultaneously. A roof that would coast for another five years in a dry inland climate can be genuinely at the end of its life here, and a roof that looks rough on the surface can still have plenty of structural life left. The goal of this page is to help you tell the difference.

Start With the Roof's Age

Age isn't the whole story, but it's the fastest filter. Materials degrade on a predictable curve, and once a roof passes a certain point, repairs stop being a good investment because you're patching a system that's failing everywhere at once, not just where you can see it.

Roofing Material	Typical Lifespan (Western WA)	Repair-Worthy Window
3-tab asphalt shingle	15-20 years	Years 0-12
Architectural/laminate shingle	25-30 years	Years 0-20
Wood shake	20-25 years (with upkeep)	Years 0-15
Metal (standing seam)	40-50+ years	Years 0-35
Torch-down/membrane (low slope)	15-20 years	Years 0-12

These numbers assume reasonably good ventilation and installation. A roof that was installed over an existing layer, poorly vented, or shaded and mossy for most of its life will age faster than the chart suggests. If you don't know the installation date, check your county permit history or ask the previous owner's paperwork — it's worth the ten minutes.

The Real Test: What's Actually Failing?

Signs That Usually Point to Repair

A handful of cracked, curled, or missing shingles in one area, with the rest of the field intact
A single active leak traced to flashing around a chimney, vent pipe, or skylight rather than the field material itself
Moss and moisture staining that's cosmetic and hasn't lifted shingle edges or reached the decking
Damage confined to a section that was recently redone or repaired (recent additions, dormers, etc.)
A roof under 15 years old with otherwise sound granule coverage and no widespread curling

Signs That Point to Replacement

Leaks in multiple, unrelated locations — a sign the underlayment has failed broadly, not just at one seam
Granule loss heavy enough that you can see bare asphalt mat across large sections
Widespread curling, cupping, or cracking rather than isolated spots
Soft or spongy decking felt underfoot in the attic, or daylight visible through the roof boards
A roof already past or near the upper end of its material's expected lifespan
Two or more prior repair visits in the last three years for problems in different spots

That last point matters more than most homeowners realize. If you're calling a roofer back every year or two for a new leak in a new location, you're not maintaining the roof — you're watching it fail in slow motion, one section at a time. At some point the cost of chasing individual failures exceeds the cost of just replacing the roof once.

What Moss Season Does to This Decision

King County's long wet season, mild temperatures, and heavy tree cover give moss an unusually good run at asphalt and wood roofs. Moss itself doesn't just sit on top of shingles — its rhizoids work into the granule surface, and as it grows it lifts shingle edges just enough to let water track underneath during driving rain instead of shedding off the surface the way the roof was designed to. That's a slow, cumulative kind of damage that's easy to underestimate because the roof still "looks okay" from the ground.

A light moss coating on a roof that's otherwise sound is a maintenance issue — soft-wash and zinc or copper strips will usually keep it in check going forward. Heavy, established moss growth combined with lifted shingle tabs, especially on a roof already 15+ years old, is a different situation. At that point the moss isn't the problem, it's a symptom of a roof that's held moisture long enough to start failing underneath. That roof needs a real inspection, not just a cleaning.

The Attic Tells the Truth

Before you commit to either repair or replacement, get into the attic. From the outside, roofs are good at hiding how bad things really are — shingles can look intact while the decking underneath is already rotting from years of slow moisture intrusion or poor ventilation. From inside the attic, the evidence is much harder to fake.

Look for daylight coming through the roof boards — any visible pinholes mean water has a path in
Check for dark staining, streaking, or mold on the underside of the decking or rafters
Press on the decking near any stains; soft or spongy wood means active rot, not just an old stain from a fixed problem
Note whether insulation is damp, matted, or discolored, which usually means moisture has been getting in for a while
Check that soffit and ridge vents aren't blocked by insulation, paint, or debris — poor airflow accelerates decking failure from the inside out

If the attic is dry, clean, and the decking is solid, that's a strong signal a repair can genuinely solve the problem. If you're finding rot, persistent moisture, or multiple stained areas, that's usually a sign the roof needs to come off — patching shingles over damaged decking just buys a little time before the same leak reappears somewhere else.

Running the Numbers

Cost comparisons get thrown around casually, but the honest way to think about it is cost-per-year-of-service, not just the check you write today.

Factor	Repair	Full Replacement
Upfront cost	Lower	Higher
Remaining service life added	Often just a few years	Full material lifespan, reset to zero
Risk of hidden damage found mid-job	Moderate — decking issues often surface once shingles are pulled	Low — decking is fully exposed and addressed upfront
Warranty coverage	Usually workmanship-only on the repaired section	Full manufacturer material warranty plus workmanship
Impact on home value/inspection	Patchwork history can raise questions in a future sale	Clean, documented replacement is a selling point

A roof that's 8 years into a 30-year architectural shingle with one isolated flashing leak is an easy repair call — you're protecting a lot of remaining service life for a small cost. A 22-year-old roof on the same shingle type with granule loss and two leak calls this year is a different math problem entirely: you might spend real money on a repair and still be replacing the roof in three years anyway.

A Quick Self-Check Before You Call Anyone

Do you know roughly how old the roof is?
Are the problem areas isolated to one section, or scattered across the roof?
Has the attic decking been checked recently, and was it dry and solid?
Have you had more than one repair call in the last two to three years?
Is the moss coverage light and manageable, or heavy with lifted shingle edges?
Are you planning to sell the home in the next few years, where a documented new roof carries real value?

If most of your answers point toward "isolated, recent, dry" — repair is likely the right call. If they point toward "old, scattered, recurring, wet" — you're probably looking at replacement whether or not you're ready to hear it.

Where Siding Fits Into This Conversation

Roof problems and siding problems often show up on the same house at the same time, and for the same underlying reason: age and years of King County's rain finding every weak seam in the building envelope. When we're up on a ladder assessing a roof, we're also looking at the condition of the siding below the roofline, since failed flashing or gutter overflow at the roofline is one of the most common causes of siding damage we see. If your siding assessment turns up rot, delamination, or repeated repainting needs, that's a separate decision from the roof — but it's worth having both looked at together rather than fixing one and finding out the other failed for the same reason a year later.

For homeowners who do end up needing new siding as part of a larger exterior project, our position is straightforward: we install James Hardie fiber cement siding exclusively. It's non-combustible, holds up to the wind-driven rain and salt air common in this region, comes with a factory ColorPlus finish that resists fading without repainting on the schedule other materials require, and carries a strong transferable warranty. We don't install vinyl, LP SmartSide, or other fiber cement alternatives — not because those products have no merit, but because after years of doing exterior work in this specific climate, Hardie is what we're comfortable standing behind on a King County home.

Getting a Second Opinion the Right Way

If a contractor tells you "it's toast, needs a full replacement" after a five-minute look from the ground, that's worth a second opinion — and the same is true in reverse if someone tells you a clearly failing roof "just needs a patch." Ask specifically what they found in the attic, whether they walked the roof or just looked from a ladder at the edge, and whether they can show you where the decking was soft or the underlayment had failed. A contractor who's done a real inspection will have specific answers, not just a general recommendation.

We're happy to come out, get on the roof, check the attic, and give you a straight answer about which category your roof falls into — repair, replacement, or somewhere in between where we lay out both options honestly. If you'd like that assessment, the form below gets you a free, no-pressure estimate with no obligation attached.