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

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

Alpine Siding Pros proudly serves Whatcom County, WA with professional roofing, siding, window, and decking solutions. Leveraging two decades of Pacific Northwest expertise, we deliver weather-tough installations, precision waterproofing, and courtesy rot repair. Count on clear estimates, proactive communication, and expert craftsmanship engineered to withstand coastal, valley, and mountain climates.

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Why Choose us

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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

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Our Services

Whatcom-Ready Roofing Solutions

Alpine Siding Pros installs premium asphalt shingles and standing-seam metal roofs built for Whatcom County’s varied weather—from coastal salt spray to Cascade foothill snows. Our certified crews perform a comprehensive roof-deck inspection, apply marine-grade underlayment, and seal all flashings with corrosion-resistant sealants to prevent leaks and ice dams.

Prior to installation, we conduct a structural assessment to uncover hidden rot or framing damage—courtesy rot repair is offered at a nominal fee. Backed by manufacturer warranties and our on-time completion guarantee, your new roof will protect your home and boost curb appeal for decades.

Durable Siding for Every Climate

Shield your Whatcom County home with low-maintenance vinyl, fiber cement, or engineered wood siding. Our installers achieve millimeter-perfect trim alignment, install continuous waterproofing membranes, and expertly caulk seams to block moisture, drafts, and pests across the county’s diverse microclimates.

Each project begins with substrate and sheathing inspections. By pairing top-tier cladding materials with our perfected moisture-barrier techniques, we deliver an energy-efficient, mold-resistant exterior that endures UV exposure, temperature swings, and heavy rainfall—enhancing both longevity and curb appeal.

Energy-Efficient Window Upgrades

Alpine Siding Pros installs ENERGY STAR®-rated double- and triple-pane vinyl or fiberglass windows tailored for Whatcom County’s weather extremes. Our precise measurements and advanced sealing methods eliminate drafts, reduce condensation, and optimize thermal comfort year-round.

We evaluate existing frames and flashing before carefully removing old units, then perform a meticulous cleanup. Enjoy lower energy bills, superior soundproofing from highway or ferry traffic, and clear views of the Salish Sea, San Juan Islands, and North Cascades.

Custom Deck Construction Across Whatcom

Transform your outdoor living with a bespoke deck from Alpine Siding Pros. We design and build decks using pressure-treated lumber, composite materials, or marine-grade hardwoods rated for coastal and mountain moisture. Our crews follow local code for joist spacing, ledger attachment, and drainage.

From simple waterfront 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 Whatcom County property’s value and provides years of enjoyment.

Why Alpine Siding Pros Thrives in Whatcom County

Alpine Siding Pros combines 20 years of Pacific Northwest exterior-contracting mastery with deep knowledge of Whatcom County’s coastal shores, valley floors, and mountain foothills. Our Bellingham-based team partners with Washington suppliers to source premium roofing, siding, window, and decking materials—ensuring rapid delivery and local support. We deliver transparent bids, manufacturer warranties, and community-focused service on every project.

Mastering the Building Envelope

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

Transparent Pricing & Courtesy Rot Repair

Integrity is our cornerstone. At Alpine Siding Pros, rot repair is quoted separately as a courtesy—charged only if hidden decay is discovered. Every estimate line-items materials, labor, and any remediation so Whatcom County homeowners never face surprise fees. 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 Whatcom County, we partner with Washington-state manufacturers and suppliers—supporting the regional economy while ensuring prompt 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, adhere to timelines, and treat your property with care—building lasting relationships one home at a time.