Seattle Deck Contractor — Alpine Exteriors

A Deck Contractor That Understands Seattle Lots

Seattle is a city of hills, and that is the first thing a deck builder here has to respect. A backyard in Ballard is a different engineering problem than a slope dropping toward Lake Washington in Madrona or a West Seattle lot with a peek of Puget Sound between the neighbors. Add in the craftsman and bungalow housing stock from the 1910s through the 1930s, postwar homes in Wedgwood and View Ridge, and the newer townhome rows filling in Greenwood and Columbia City, and there is no single deck design that fits this city. We build each one to the house and the ground it sits on.

Alpine Exteriors is an exterior remodeling contractor with 25 years in the trade, and decks are where structure and daily living meet. On sloped Seattle lots we spend as much time on the substructure as on the surface: engineered footings, properly flashed ledger connections, and railings built to code for elevated platforms. The ledger detail alone separates a deck that lasts from one that quietly rots the rim joist of a hundred-year-old house.

Materials That Survive 150 Gray Days a Year

Seattle does not get dramatic rainfall totals, but it gets relentless drizzle and cloud cover, and that slow, persistent damp is harder on wood than a Florida downpour. Moss and algae colonize shaded north-facing decks within a couple of seasons. Our material recommendations follow from that reality.

• Capped composite decking that shrugs off moss pressure and never needs stain, ideal under big-leaf maples and cedars.
• Cedar and hardwood options for homeowners who want real wood and accept a maintenance rhythm, installed with hidden fasteners.
• Full joist protection tape and stainless hardware, because Puget Sound air corrodes cheap fasteners from the inside out.
• Integrated drainage details that move water off ledgers, stair stringers, and post bases instead of trapping it.

We have completed more than 2,000 projects across Washington, and the pattern is consistent: decks fail at connections and moisture traps, almost never in the middle of a board. So that is where we put the craftsmanship, whether the project is a rooftop deck on a Phinney Ridge remodel or a two-level backyard build stepping down a Beacon Hill slope.

Straightforward Process, Long Warranty

It starts with a free on-site estimate. We measure, look at grade and drainage, discuss how you want to live on the deck, and give you a clear written scope. City permitting for elevated structures is something we handle routinely, so the paperwork does not land on you.

When the last picture-frame border goes down, you get our 25-year workmanship warranty in writing. A Seattle deck should carry you through summer evenings when the mountain is out and the long gray stretch in between. Build it once, build it right, and it will.