Your Trusted Siding, Roofing, Decking, Windows, Exterior Contractor in King County, WA

Trusted for Over 450 verified 5 star reviews and 1750 + jobs

Alpine Siding Pros proudly serves all of King County, WA with expert roofing, siding, window, and decking solutions. With two decades of Pacific Northwest experience, we deliver durable installations, precision waterproofing, and courtesy rot repair. Expect clear estimates, responsive communication, and superior workmanship built to withstand King County’s varied urban and suburban climates.

Get Started with a Free Consultation!

Why Choose us

Looking for a trusted contractor near me?

Our top-rated siding company specializes in James Hardie siding, siding replacement, and exterior upgrades for lasting durability and curb appeal.

James Hardie’s Highest Performing Contractor for Over 2 Decades – With Hundreds of Jobs to Prove it!
Lead Certified & Tyvek Certified
Backed by a 25-Year Workmanship Warranty – Best in Town GUARANTEED!
The ONLY Exterior Company in Whatcom County with a Full Showroom
Proud Partner of Hover – Bringing Your Home’s Vision to Life with 3D Design Tools
A Perfect 5-Star Rating on BBB, Google, Yelp, GuildQuality, Angi & More
We Support Local – Volunteering, Charity Work & Investing in Our Community

A REPUTATION OF EXPERIENCE, QUALITY, AND TRUST

Washingtons Elite Preferred James Hardie Siding Contractor
Serving Whatcom and surrounding counties for over 22 years!

Top-Rated Siding Company Bellingham, WA
Siding Contractors Bellingham

0 %

Project satisfaction

Defective Work Claims

0 +

Jobs completed

Accidents

0 +

Years of experience

Our Services

Reliable Roofing Across King County

Alpine Siding Pros installs high-performance asphalt shingles and standing-seam metal roofs engineered for King County’s heavy rains and occasional snow. Our certified crews conduct thorough deck inspections, apply premium underlayment, and carefully seal all flashings to prevent leaks and ice dams.

Before any installation, we perform a full structural assessment to uncover hidden rot or framing damage—offering courtesy rot repair at a nominal fee. Backed by manufacturer warranties and our commitment to on-time completion, your new roof will protect your home and enhance curb appeal for decades.

Weather-Tough Siding in King County

Protect your King County home with low-maintenance vinyl, fiber cement, or engineered wood siding from Alpine Siding Pros. Our installers align trim with laser precision, install continuous waterproofing membranes, and caulk every joint to block moisture, drafts, and pests in the region’s varied microclimates.

Each siding project begins with substrate and sheathing inspection. By combining premium materials with our perfected moisture-barrier techniques, we deliver an energy-efficient, mold-resistant exterior that endures UV exposure and temperature swings—boosting both durability and curb appeal.

Energy-Efficient Windows for Every Neighborhood

Upgrade to ENERGY STAR®-rated double- and triple-pane vinyl or fiberglass windows installed by Alpine Siding Pros. Our precise measurements and advanced sealing methods eliminate drafts, reduce condensation, and improve thermal comfort in King County’s urban, suburban, and rural areas.

We assess existing frames and flashing before carefully removing old units, then complete a meticulous cleanup. Enjoy lower utility bills, superior soundproofing from city bustle or highway noise, and clear views of the Cascades or Puget Sound.

Custom Deck Design Throughout King County

Extend your outdoor living with a bespoke deck from Alpine Siding Pros. We design and build decks using pressure-treated lumber, high-performance composites, or marine-grade hardwoods rated for local moisture conditions. Our crews adhere to King County code for joist spacing, ledger attachment, and drainage.

From simple platforms to multi-level entertainment areas, we select corrosion-resistant fasteners and low-maintenance finishes. The result is a safe, durable deck that enhances your property’s value and provides years of outdoor enjoyment.

Why Alpine Siding Pros Excels in King County

Alpine Siding Pros combines 20 years of Pacific Northwest expertise with an in-depth understanding of King County’s diverse environments—from urban Bellevue to rural Snoqualmie. Our Bellingham-based team partners with Washington suppliers to source premium roofing, siding, window, and decking materials—ensuring rapid delivery and local support. We provide transparent bids, manufacturer warranties, and customer-focused service, delivering durable exteriors on time and on budget.

Mastering the Building Envelope

We treat your home’s exterior as a unified system—coordinating roofing, siding, windows, and decking to block moisture and air infiltration. Our teams install high-performance vapor barriers, precision flashings, and premium sealants at every junction. By inspecting and reinforcing sheathing and framing, we prevent rot and mold before they start, maximizing energy efficiency and indoor comfort.

Transparent Pricing & Courtesy Rot Repair

Integrity drives our process. We quote rot repair separately as a courtesy—charged only when hidden decay is discovered. Every estimate clearly line-items materials, labor, and any remediation so King County homeowners never face surprise costs. This transparency lets you budget confidently and ensures your project stays on schedule and on budget.

Local Partnerships & Community Commitment

As a locally owned Bellingham contractor serving King County, we partner with Washington-based manufacturers and suppliers—supporting the regional economy while ensuring rapid access to premium materials. Our crew lives in the communities we serve, understands local codes and permit processes, and respects neighborhood character. From minor repairs to full recladding, we communicate openly and treat your property with the utmost care—building lasting relationships one home at a time.