Moss Treatment & Roof Cleaning in Mercer Island, WA

Moss Treatment & Roof Cleaning in Mercer Island, WA

Looking for moss treatment & roof cleaning in Mercer Island? Xion Build is a licensed, bonded, and insured roofing & gutters contractor delivering standout results for Mercer Island homeowners — start to finish, under one roof. Remove moss and treat to prevent regrowth on PNW roofs.

Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.

A roof is a complete system — flashing, ventilation, ice-and-water shield, and underlayment determine how long it lasts in Pacific Northwest weather, not just the shingles on top.

What's included in your moss treatment & roof cleaning

A typical moss treatment & roof cleaning in Mercer Island can involve ventilation, flashing, tear-off, ridge details — and we put the full scope in writing so you know exactly what's covered before work starts.

From asphalt re-roofs and standing-seam metal to flat systems, gutters, and leak repairs, we document the existing condition, protect the property, and leave the site spotless.

How much does a moss treatment & roof cleaning cost in Mercer Island?

Most moss treatment & roof cleaning projects in Mercer Island fall between $700 – $5,900, depending on the size of the space, the finishes you choose, and the condition of what's already there.

Because every home is different, we don't quote final numbers sight unseen. After a free in-home consultation you get a detailed, itemized estimate tied to your actual roofing & gutters project — so there are no surprises later.

Why Mercer Island homeowners choose Xion Build

Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.

Licensed, bonded, and insured in Washington — every project is built to meet or exceed code and backed by a written warranty.

Meticulous job sites and clear daily communication, with respect for your home, your time, and your neighbors.

Our Mercer Island roofing & gutters process

We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.

Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.

It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.

Frequently asked questions

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