Anacortes Siding Burlington sits inland from Padilla Bay and the Skagit flats, but that doesn't spare it from the weather that makes decking such a demanding call in this part of Skagit County. Salt-laden air still drifts up the valley, driving rain still comes through in sustained fall and winter systems, and the moss season here runs long — often from October well into spring. A deck is one of the most exposed structures on any property, sitting flat to catch rain, shaded by trees or the house itself for much of the day, and under more foot traffic and weather stress than almost anything else outside. We build and replace decks for homeowners throughout Burlington and the rest of Skagit County, and composite decking is the material we've settled on as our standard for exactly this climate.
What Burlington's Climate Actually Does to a Deck
A deck doesn't fail all at once. It fails a board at a time, a fastener at a time, usually starting in the spots that stay damp the longest. In Burlington, that's typically the north- or east-facing sections shaded by trees or the house, the areas under overhangs that never quite dry between rain events, and any spot where two boards butt together and trap moisture in the seam.
Wood decking — pressure-treated lumber or cedar — depends on a sealed surface to keep water out of the fibers. Once that seal wears through, which happens faster in a climate that barely gives wood a dry season to recover, water gets into the grain and the clock starts on rot, cupping, and splintering. Add in a long moss season and shaded lot conditions common on tree-lined Burlington properties, and a wood deck's maintenance schedule gets demanding fast — not because the homeowner did anything wrong, but because the climate doesn't give the material much of a break.
Where We See the Most Deck Damage in This Area
- Board tops and edges that stay damp under tree cover or on the shaded side of the house
- Ledger boards and framing where flashing was never installed or has failed over time
- Fasteners and hardware that have corroded from sustained moisture and salt-laden air
- Moss and algae buildup on boards that don't get direct sun for much of the day
- Joist and beam rot underneath decking that looks fine on the surface but is failing structurally below
Why We Install Composite Decking as Our Standard
We're straightforward about this: we install composite decking, not pressure-treated lumber or cedar, as our default recommendation for Burlington properties. That's not a knock on wood as a material everywhere — it has a long track record and plenty of homes across the country carry it well. It's a professional judgment based on what we see happen to wood decking specifically in a climate with this much sustained moisture, shade, and salt exposure. Composite boards are engineered from a blend of wood fiber and plastic, which means they don't absorb water into an open wood grain the way solid lumber does, and they don't need the yearly sealing or staining cycle that keeps wood decking looking and performing well here.
The trade-off is upfront cost — composite decking runs higher per square foot than pressure-treated lumber. We think that's worth being direct about rather than glossing over, because it's a real factor in the decision and homeowners deserve to weigh it honestly rather than have it buried in a sales pitch.
Composite vs. Wood: The Honest Comparison
| Factor | Pressure-Treated Wood | Cedar | Composite Decking |
|---|---|---|---|
| Upfront material cost | Lowest | Mid-range | Highest |
| Sealing/staining needed | Annually or every 1-2 years | Annually to prevent graying and rot | None — factory-finished surface |
| Moisture absorption | High if seal fails | High if seal fails | Low — engineered core resists water uptake |
| Moss/algae resistance | Prone on shaded boards | Prone on shaded boards | More resistant; still needs occasional cleaning |
| Splintering/cupping risk | Increases with age and moisture cycling | Increases with age and moisture cycling | Minimal when installed correctly |
| Typical service life here | 10-15 years before major repair | 15-20 years with consistent upkeep | 25-30+ years, manufacturer-dependent |
| Fastening | Face-screwed, visible | Face-screwed, visible | Hidden clip systems available on grooved-edge boards |
What a Correct Composite Deck Installation Actually Involves
Composite decking is a forgiving surface material, but it's only as good as the structure underneath it and the details around it. A deck that looks right on day one can still trap water against the house or rot from the framing up if the substructure isn't handled correctly, and that's true no matter what decking material sits on top. When we build or replace a deck in Burlington, the parts that actually determine long-term performance are mostly the parts a homeowner won't see once the project is done.
Ledger and Framing
Where a deck attaches to the house is the single most common source of hidden water damage we find on older decks in this area. A ledger board needs proper flashing that directs water out and away from the house framing, not a bead of caulk standing in for real flashing. We also confirm the ledger connection is fastened to code for structural load, since this is the point that carries a significant share of the deck's weight.
Joists, Beams, and Footings
Framing lumber underneath a composite deck is still typically pressure-treated wood, so it needs the same attention to moisture management as any wood-framed structure in this climate — proper spacing for airflow, correctly set footings below frost depth, and joist tape or flashing on top of the framing to keep composite fastener penetrations from becoming a place water collects in the wood below.
Drainage and Airflow
A deck that can't shed water and dry out underneath will hold moisture against the framing regardless of what's on top. We pay attention to slope away from the house, spacing between boards, and ventilation underneath low-clearance decks, since a deck built tight to the ground with no airflow is one of the more common setups we see struggling with moss and rot in Skagit County's shaded, damp lots.
Fasteners and Hardware
Salt-laden air corrodes standard fasteners faster than most homeowners expect, especially on hardware that's hidden from view and easy to overlook during routine upkeep. We use coated or stainless hardware rated for exterior and coastal-adjacent exposure, and on grooved-edge composite boards we typically use a hidden fastening system, which also gives a cleaner surface with no exposed screw heads for water to sit against.
Composite Board Options and What Actually Differs Between Them
Not all composite decking is built the same way, and the differences matter more in a wet climate than a dry one. The main distinction is whether a board is capped or uncapped.
- Uncapped composite: wood fiber and plastic blended throughout the board with no protective outer layer. Lower cost, but the exposed surface can absorb some moisture and is more prone to staining and fading over time.
- Capped composite: a solid polymer shell wrapped around the wood-plastic core. Higher cost, but the cap resists moisture absorption, staining, and fading far better, which matters on a shaded, damp Burlington lot that rarely gets a long dry stretch.
- Grooved-edge boards: allow hidden fastener clips for a clean surface without visible screws, and typically pair with capped composite products.
- Solid vs. hollow profiles: solid boards are heavier and generally more resistant to moisture intrusion at cut ends; hollow-core boards are lighter and less expensive but need their cut ends capped or sealed to keep water out of the exposed channels.
For a Burlington deck, we generally steer homeowners toward capped composite with a solid or properly end-capped profile, because it's the combination that holds up best against the specific moisture and shade conditions common in this area. Uncapped or budget-tier composite still outperforms untreated wood here, but it's a step down in long-term appearance retention, and we'll walk through that trade-off honestly rather than upsell past what a given budget calls for.
Our Process, Start to Finish
- On-site assessment: we look at the existing deck or build site, sun exposure, shade patterns, drainage, and how the deck connects to the house.
- Structural evaluation: for replacements, we check framing, footings, and the ledger connection before deciding what can be reused and what needs to be rebuilt.
- Material selection: we walk through composite board options, color and profile choices, and hidden vs. face-fastening based on the project's goals and budget.
- Permitting: most deck construction and replacement in Skagit County requires a building permit, and we handle that as part of the project rather than skip it.
- Framing and flashing: ledger flashing, joist protection, and correctly spaced structural framing go in before a single composite board is laid.
- Decking installation: boards are laid with correct spacing for drainage and expansion, using fasteners and hardware rated for this climate.
- Final walkthrough: we go over the finished deck together, including what upkeep — minimal as it is — actually looks like going forward.
Why a Crew That Already Works Burlington Makes a Difference
Deck construction looks straightforward from the outside, but the details that determine whether it lasts fifteen years or thirty are almost entirely below the surface — ledger flashing, framing moisture management, footing depth, and fastener selection for salt and moisture exposure. Those are also the details that vary by region. A crew that installs decks across a wide range of climates may default to generic specs that work fine in a drier part of the country but leave gaps in a place that sees this much sustained rain and shade.
We work throughout Burlington and the rest of Skagit County regularly, which means we're not guessing at how a shaded, damp lot behaves over a full wet season — we've seen it, repaired it, and built around it enough times to know what actually holds up here versus what just looks fine on installation day. That local pattern recognition is a real part of what a homeowner is paying for, even though it's not a line item on an estimate.
Maintenance: What Composite Decking Actually Needs
One of the real advantages of composite decking is how little ongoing upkeep it demands compared to wood, but "low-maintenance" isn't the same as "no-maintenance," especially in a climate with this much shade and moisture.
- Rinse or sweep debris off the deck surface periodically, especially leaves and needles that trap moisture against the boards
- Wash the surface once or twice a year with a mild cleaner to prevent moss and algae from establishing on shaded sections
- Check that gaps between boards stay clear of debris so water can drain through rather than pool on top
- Inspect railings, fasteners, and any visible hardware periodically for corrosion, particularly on decks closer to open water or exposed to wind
- Keep planters and other items that trap moisture off the decking surface for extended periods, especially on uncapped or lower-tier composite boards
Getting Started
Whether you're replacing a wood deck that's reached the end of its life or planning a new one, the details that matter most in Burlington's climate — flashing, framing, drainage, and material choice — are easiest to get right from the start rather than fix later. If you'd like an honest look at what your property needs, we offer free, no-pressure estimates and can walk the site with you to talk through options before anything is decided.