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Certified crew
Manufacturer-trained installation to spec.
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Licensed & insured
Fully licensed and insured. Verify on L&I
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5-star rated
Trusted by homeowners across Greater Seattle.
When moss needs roof attention
Light moss and heavy moss call for different decisions. We inspect the roof before recommending treatment, repair, or replacement planning.
1
Moss packed between shingles
Growth in seams can hold water and lift shingle edges. We assess granule loss and brittleness before removal methods are chosen.
2
Moss near vents, valleys, and shade
Tree cover, valleys, and north-facing slopes can stay damp. We check whether moss is cosmetic, a maintenance need, or masking roof wear.
3
Treatment vs. replacement advice
If the roof is still serviceable, careful treatment may help. If moss hides failing shingles or soft decking, we document the concern.





What we look at before touching the moss
Inspection-led moss care for asphalt shingle roofs in the Pacific Northwest climate.
Roof moss inspection
identify severity, shingle condition, and drainage issues
Careful moss removal guidance
avoid destructive pressure washing on asphalt shingles
Roof treatment planning
recommend treatment when the roof condition supports it
Valley and vent review
check moss-prone details where water tends to linger
Granule loss check
document whether cleaning may expose aged shingles
Leak tracing
assess whether moss is contributing to active roof leaks
Repair planning
scope targeted repair when moss has exposed weak details
Replacement guidance
explain when heavy moss is a symptom of end-of-life roofing
For a planned visit, contact us and say whether the moss is a light film or a thick mat in the valleys.
Moss removal starts with roof condition
Pulling moss off a brittle shingle can show a roof that was already finished. We look first so the cleanup does not become the leak.
If the mat still has granules, moss removal roof treatment in Greater Seattle means lifting the growth with hand tools and leaving those granules in place. Bare fiberglass, soft decking, or an active drip moves the job to a repair or a replacement plan, written down before work starts.

How a moss visit runs
Read the mat
Granule cover, lifted tabs, and whether the growth is a film or a mat packed into the seams.
Pick a method
Soft growth on a sound shingle can come off with hand tools. Brittle shingles get photographed, not scraped.
Write the next step
You leave with photos and a choice: treat, repair the opened laps, or plan replacement if the field is done.
Warranties on qualifying roof repair work
Written warranty terms for qualifying labor and eligible materials are explained on your estimate before you approve the work.
5
Year labor warranty
30
Year material warranty
FAQ · Contact us for terms on your project.

Why homeowners choose Construction Elite LLC
- Free inspections & written estimates — clear scope before you approve work
- Master Craftsman certified crew — repairs to manufacturer standards
- Licensed and insured in Washington
- Based in Bothell since 2021 — King, Snohomish, and Pierce Counties
- Written estimates before permanent repair or replacement begins

5-Star Rated on Google
Homeowners call when a north slope turns green and they want photos before anyone scrapes.
Moss-prone roofs from recent visits
North slopes, box vents, and valleys where a moss mat holds water against the shingles.
Moss removal service area
Based in Bothell—we serve homeowners across King, Snohomish, and Pierce Counties.
Priority cities
Counties
Get started
- Free estimate
- (425) 758-9982
- Photos of the mat before any treatment
Questions before anyone scrapes the roof
Is moss bad for asphalt shingles?
Do you pressure wash roofs?
Can moss cause roof leaks?
Should I remove moss myself?
When is treatment not enough?
Do you inspect before treatment?
What warranty applies to moss service?
Where do you provide moss roof service?
Related roofing services
If the growth has opened a leak path, see roof leak repair and residential roof repair.
Skylights, chimneys, moss, ice, and pipe boots
Small roof details cause many Puget Sound leaks. These pages focus on the vulnerable parts of the roof system: glass openings, masonry flashing, moss-prone planes, ice-prone eaves, and plumbing stacks.
Need moss checked before winter rain?
Tell us what you see on the roof or ceiling. We inspect, document, and provide a written repair scope before work begins.
Construction Elite LLC · 4405 153rd Pl SE, Bothell, WA 98012
