Why Old Town Anacortes Decks Need to Be Built Differently
Old Town Anacortes sits close to the water on Fidalgo Island, which means any outdoor structure here deals with a combination most inland Skagit County homes don't: salt-laden air off the Salish Sea, long stretches of driving rain through fall and winter, and a shady, damp season that lets moss and algae get a foothold on almost any horizontal wood surface. A deck built the same way you'd build one in a dry inland climate will show problems within a few years — corroding hardware, soft spots at the ledger board, and a slick green film that makes stairs and landings dangerous by December.
None of that means a deck in Old Town Anacortes can't last decades. It means the build has to account for the conditions from the framing up, not just at the finish coat. That's the difference between a deck that needs major repair in year six and one that's still solid in year twenty-five.

What a Correctly Built Deck Needs in This Climate
Framing and Hardware
The single biggest mistake we see on older or poorly-built decks near the water is standard electro-galvanized fasteners and joist hangers. In a normal inland climate they hold up fine. Close to salt air, that thin zinc coating breaks down faster, and you end up with rust streaks, weakened connections, and hardware that fails well before the wood around it does. Framing in this area should use hot-dip galvanized or stainless steel fasteners and connectors — stainless especially for anything within a few blocks of the water or exposed to direct sea breeze. It costs more up front. It's not optional if you want the structure to outlast the decking on top of it.
Drainage and Ventilation
Rain here doesn't just fall straight down — wind off the strait pushes it sideways, which means water finds its way under railings, into end grain, and behind ledger boards more than people expect. A correctly built deck has proper ledger flashing where it meets the house (this is the single most common rot point on older decks), gapped decking boards that let water drain through rather than pool, and open space underneath for airflow so the frame can actually dry out between storms instead of staying damp all winter.
Footings for Local Soil
Older lots in this part of Anacortes vary — some sit on well-drained soil, others on fill or heavier clay that holds water. Footing depth and design should match what's actually under the deck, not a generic assumption. This is one area where a quick soil check during the design visit saves you from a deck that heaves or settles unevenly a few years in.
Choosing the Right Decking Material
There's no single "best" decking material — there's a best match for your budget, how much upkeep you're willing to do, and how much moss and moisture exposure the deck will actually see. Here's how the common options compare for a shaded, damp, salt-air site like Old Town Anacortes:
| Material | Upfront Cost | Maintenance Here | Moss/Slip Resistance | Realistic Lifespan |
|---|---|---|---|---|
| Pressure-treated fir/pine | Lowest | Needs re-sealing every 1-2 years to shed water well | Moderate — smooth boards get slick faster | 10-15 years with upkeep |
| Western red cedar | Moderate | Naturally rot-resistant but still needs periodic oiling/sealing | Moderate — better than PT when maintained | 15-20 years with upkeep |
| Composite decking | Highest | Occasional washing, no sealing or staining | Good with grooved/textured profiles; still needs cleaning in shade | 25-30 years |
| Tropical hardwood (e.g. ipe) | High | Low rot risk but oiling recommended to hold color | Good — dense grain sheds moss better | 25+ years |
Our Take
For most Old Town homes we recommend composite or a well-detailed cedar deck, depending on budget and the look you want. Composite carries a higher upfront cost but removes the sealing/staining cycle entirely, which matters a lot on a shaded lot where boards stay damp longer. Cedar is the right call when you want a natural wood look and are willing to stay on top of maintenance. Pressure-treated is a reasonable budget option for a smaller deck, but it's the one that demands the most attention from the owner.
Old Town's Older Homes: Ledger Attachment and Site Considerations
A lot of the homes in Old Town Anacortes are older construction, and that changes how a deck actually gets built — not whether it can be built well. Older rim joists and sill plates sometimes need sistering or reinforcement before a ledger board can be safely bolted on, especially if the home has had past moisture issues at that wall. Narrower, older lots also mean the deck footprint often has to be worked around existing grade, mature landscaping, or a foundation that isn't perfectly square — none of which is a problem, but it does mean the framing plan has to be built to the actual house, not a standard template. This is where experience with the neighborhood's housing stock pays off: knowing what to check before you cut into an old ledger wall saves a change order mid-project.
Permitting in Anacortes and Skagit County
Most attached decks and any deck above a certain height off grade require a building permit through the City of Anacortes, with structural requirements — footing depth, guardrail height, baluster spacing — following Washington state building code. Guardrails are generally required once a deck surface is a certain height above grade, with baluster gaps kept narrow enough that a small child can't pass through. Skipping the permit step might save a little time up front, but it creates real problems later: at resale, with insurance, and if the structure ever needs inspection after storm damage. A contractor who pulls permits routinely in this jurisdiction knows what the inspector will actually check and builds to that standard the first time.
Our Process, Start to Finish
- Site visit and design conversation — we look at your existing structure or grade, talk through how you'll use the deck, and check soil and drainage conditions on site.
- Material and layout selection — we walk through the tradeoffs in the table above based on your budget and maintenance preference, and finalize a layout that fits the lot.
- Permit and engineering — we handle the permit application with the City of Anacortes and any structural details needed for ledger attachment or footing design.
- Framing — built with corrosion-resistant hardware throughout, proper ledger flashing, and footings sized to the soil we found on site.
- Decking, railing, and finish work — installed with drainage gaps and ventilation built in, not added as an afterthought.
- Final walkthrough — we go over care and maintenance specific to the material you chose before we call the job done.
Maintaining a Deck Through the Moss Season
Even a well-built deck needs some seasonal attention in this climate. The goal is to keep moisture from sitting on the surface long enough for moss and algae to take hold, and to catch small issues before they become structural ones.
- Sweep leaves and debris off the deck surface regularly in fall — trapped moisture under leaf litter is what starts most moss growth
- Wash the deck surface at least once a year, more often on shaded sections, to remove algae film before it gets slick
- Check and re-seal or re-oil wood decking on the schedule appropriate to that material — don't wait until it's visibly gray and dry
- Inspect ledger flashing and fastener heads yearly for early signs of rust or water staining
- Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water onto the structure
Why Hire a Crew That Already Works in Old Town Anacortes
A deck built by a crew that hasn't worked this specific stretch of coastline tends to make the same mistakes: standard hardware that wasn't rated for salt air, decking installed tight with no drainage gap, or a design that ignores how much shade and moisture a particular lot actually gets. Working in Anacortes and Skagit County regularly means knowing which fastener grade actually holds up near the water, what the local permitting office expects to see on a submission, and how older Old Town framing typically needs to be handled at the ledger. It also means we're local if something needs a look five years down the road — not a name from a job board that did one project in the area and moved on.
Before You Hire: Questions Worth Asking
Whoever you hire to build your deck, these are worth confirming before signing a contract:
- What grade of fasteners and hardware will be used, and are they rated for coastal/salt-air exposure?
- Will the contractor pull the required City of Anacortes building permit, or is that left to you?
- How will the ledger board be flashed and attached, especially if the home is older construction?
- What drainage and ventilation is built into the framing and decking layout?
- Is there a written warranty on labor, separate from the manufacturer's warranty on materials?
- Can they explain the maintenance schedule for the specific decking material you're choosing?
If you're planning a custom deck in Old Town Anacortes and want a straight answer on materials, cost, and what your specific lot needs, we're happy to take a look and put together a free, no-pressure estimate — the form below gets you started.
Anacortes Siding