Conway, Skagit County Home Exterior Inspection Checklist

Updated August 2026 · Alpine Exteriors · WA contractor license ALPINI751OW

Why This Checklist Matters in This Region

Conway sits low on the Skagit flats, where the Skagit River delta meets tidal sloughs and wide-open farmland. That geography shapes what your home's exterior deals with every year. Winters here bring long stretches of steady, soaking rain rather than short bursts, so water has more time to find every gap in flashing, every clogged gutter, and every worn shingle. The open flats also funnel wind with little to break it up, and gusts off the Strait of Juan de Fuca and Puget Sound push moisture sideways into siding and window trim that a more sheltered lot would never see. Add in the shaded, damp conditions along tree lines and drainage ditches that ring many Conway properties, and you have near-ideal conditions for moss and algae to colonize a north-facing roof slope within a couple of seasons.

None of this means Conway homes are fragile — it means they need routine attention rather than an emergency response. A twice-yearly walk-around, done before the fall rains settle in and again after the wettest months pass, catches small issues while they are still cheap to fix. Wait until a stain appears on a ceiling or water pools against a foundation, and the same issue usually costs several times more to correct because it has already damaged framing, insulation, or interior finishes. This checklist is built around the specific stresses of the Skagit flats: wind-driven rain, moss growth, gutter capacity, and the insulation and moisture-control standards set by the Washington State Energy Code, which governs how new roofing, windows, and wall assemblies in this state are expected to perform. Alpine Exteriors put this list together from years of service calls in Mount Vernon, Burlington, La Conner, and out here in the Conway lowlands, so it reflects what actually fails on homes like yours — not generic advice written for a different climate.

The Checklist

Roof

• Moss or dark algae streaking, especially on north- or shade-facing slopes: moss holds moisture against shingles and lifts edges, shortening the life of the roofing underneath it.
• Missing, cracked, or curling shingles or shakes: even a few compromised shingles let wind-driven rain track sideways under the roofing during a Skagit flats storm.
• Flashing around chimneys, skylights, and roof-wall intersections: these transitions are the most common entry point for slow leaks that show up as ceiling stains months later.
• Granule buildup in downspouts or on the ground below the eaves: heavy granule loss signals a roof nearing the end of its service life, well before it starts visibly leaking.
• Sagging ridge lines or soft spots felt underfoot (from a ladder, not by walking the roof): sagging can indicate trapped moisture or structural wear in the decking below.

Gutters and Downspouts

• Leaves, needles, and moss debris packed in the gutter troughs: our long, wet fall and winter mean gutters fill faster here than in drier climates, and a clogged gutter sends water straight down the siding instead of away from the house.
• Downspouts that don't extend at least several feet from the foundation: with the water table already high on the flats, water dumped right at the foundation has nowhere good to go.
• Sagging gutter sections or pulled-away brackets: standing water in a sagging run adds weight and invites ice to form during the occasional hard freeze, stressing the fasteners further.
• Rust spots or seam separation on metal gutters: constant damp exposure accelerates corrosion at seams and end caps faster than most homeowners expect.

Siding and Trim

• Soft or spongy spots when pressed, particularly near ground level and around window sills: this usually means moisture has already gotten behind the siding and is affecting the sheathing.
• Peeling paint or bubbling on wood trim: trim failure is often the first visible sign of a moisture problem that started somewhere else, like a failed gutter or missing flashing.
• Gaps or cracked caulking at siding seams, corner boards, and utility penetrations: wind off the flats pushes rain into these gaps horizontally, not just downward.
• Salt haze or pitting on siding for properties nearer Camano Island, Anacortes, or other saltwater-adjacent areas: airborne salt accelerates wear on paint finishes and some metal fasteners even a few miles inland.
• Insect damage or soft wood near the base of siding boards: persistent ground moisture on low-lying Conway lots creates conditions carpenter ants and moisture-loving pests favor.

Windows and Doors

• Fogging or condensation between panes on double- or triple-glazed units: this means the seal has failed and the insulating gas has escaped, which also affects the energy performance the Washington State Energy Code assumes your windows are delivering.
• Drafts felt around frames on a windy day: failing weatherstripping or settled framing lets in both cold air and moisture during wind-driven storms.
• Cracked or missing exterior caulk beads at window and door perimeters: this is one of the single most common water-entry points found on service calls in this region.
• Difficulty opening, closing, or locking: swelling from moisture absorption or shifted framing often shows up first as mechanical stiffness before any visible damage appears.

Decks and Outdoor Structures

• Soft, discolored, or splintering deck boards, especially in shaded corners: shade plus year-round dampness is a near-perfect recipe for wood rot on uncovered decks.
• Rust streaking from fasteners or structural hardware: exposed metal connectors corrode faster in our damp climate, and corrosion can weaken structural connections without obvious visible sagging.
• Ledger board attachment to the house, checked for gaps or water staining: this connection point carries significant structural load and is a common spot for hidden moisture intrusion.
• Loose or wobbly railings and stair stringers: freeze-thaw cycles in colder snaps, even brief ones, can loosen fasteners that were snug in summer.

Foundation and Grading

• Standing water near the foundation after rain, common on low-lying Conway parcels: poor drainage here contributes more to moisture problems than almost any single roofing or siding defect.
• Visible cracks in the foundation or noticeable settling: the flats' soil composition can shift with seasonal saturation, and new cracks deserve a closer look.
• Efflorescence (white, chalky mineral deposits) on foundation walls: this residue indicates water has been moving through the concrete or masonry.

Attic and Ventilation

• Musty odor or visible mold or mildew when checking the attic: trapped humidity in a poorly ventilated attic is common in our climate and accelerates roof deck deterioration from underneath.
• Insulation that looks compressed, wet, or unevenly distributed: wet insulation loses most of its effectiveness and can indicate a slow roof or flashing leak feeding it from above.
• Blocked soffit or ridge vents: proper attic airflow, as anticipated under the Washington State Energy Code's ventilation expectations, keeps moisture from condensing inside the roof assembly.

What to Do If an Item Fails

Not every failed item is an emergency, and it helps to separate what needs immediate action from what can go on a seasonal maintenance list. A clogged gutter or a little surface moss is a maintenance task — clean it out, and if moss is heavy, treat it or have it removed before it works its way under shingle edges. A soft deck board or a cracked caulk bead at a window is a repair task worth scheduling within the next few weeks, particularly before the fall rains intensify; these are exactly the kinds of small, localized fixes that prevent a much larger repair bill later.

Some findings warrant faster attention. Fogged window seals, sagging gutter runs pulling away from the fascia, soft spots in roof decking, or any sign of active water intrusion into living space should move to the top of the list. These indicate that moisture has already breached a layer of protection the house depends on, and the longer that moisture sits, the more it spreads into framing, insulation, and drywall — materials that are far more expensive to replace than the flashing or caulk that let the water in. If you find efflorescence or new foundation cracking, document it with photos and dates so you, or a contractor, can track whether it's stable or actively worsening over the following weeks.

For most homeowners, a clear photo log — taken at the same spots each season — turns this checklist from a one-time exercise into a useful record. It's far easier to convince yourself an item needs attention, or to show a contractor exactly what changed, when you can compare this spring's photo to last fall's.

When to Call a Professional

Some items on this list are reasonably safe for an attentive homeowner to check from the ground or a stable ladder: gutters, visible siding, window caulking, and deck boards fall into that category for most people. Roof inspections are different. Walking a roof without the right footwear and experience is genuinely risky, and it's easy to cause more damage — cracked shingles, dislodged granules — just by walking across a roof incorrectly. If you're not fully comfortable on a ladder or roof, or if your roof pitch is steep, it's worth having a professional handle that portion even if you do the rest yourself.

Beyond safety, some findings need a trained eye to properly diagnose. Moisture that shows up in an attic or on an interior ceiling doesn't always originate directly above the stain — water travels along rafters and sheathing before it drips down, so tracing it back to the actual entry point often takes someone who does this regularly. Similarly, distinguishing cosmetic moss staining from moss that has already lifted shingles and created a leak path isn't always obvious from the ground. Alpine Exteriors serves Conway as part of our broader Skagit, Island, and Whatcom County service area, and we're glad to do a straightforward exterior inspection even if the goal is simply to get a second opinion before you decide whether a repair is worth doing yourself or hiring out. As a WA-licensed contractor, license ALPINI751OW, Alpine Exteriors can also handle the repair directly once an inspection identifies what actually needs fixing, rather than guessing at scope from a list alone.

FAQ

How often should I inspect my home's exterior in Conway?

Twice a year covers most homes well: once in early fall before the heaviest rains arrive, and once in spring after winter storms have passed, so you can address anything that developed over the wet season. Homes with heavy shade, mature trees, or a history of moss growth may benefit from an additional gutter check in late fall, since debris tends to accumulate quickly once leaves drop.

Why does moss seem to come back on my roof every year no matter what I do?

Moss regrows because the underlying conditions — shade, moisture, and organic debris — don't go away just because you cleaned the roof once. Treating moss without addressing what's feeding it, like overhanging branches holding moisture against the roof or gutters that stay damp with trapped leaves, means it will likely return. Zinc or copper strips near the ridge can help slow regrowth over time, but they work gradually and aren't a substitute for periodic cleaning.

Do I need to worry about ice damage on my roof this far into the lowlands?

Conway sees far less snow and ice than the nearby foothills, but it's not immune to the occasional hard freeze or light snow event, and gutters already full of standing water can freeze and expand during those cold snaps, stressing seams and brackets. Keeping gutters clear going into winter reduces that risk more than anything else you can do.

What does the Washington State Energy Code have to do with my windows and roof?

The Washington State Energy Code sets performance expectations for insulation, air sealing, and glazing in the walls, windows, and roof assemblies used in new construction and many renovation projects in this state. It's a useful reference point if you're replacing failed windows or re-roofing, since choosing products that meet current code requirements typically means better energy performance and moisture control than simply matching what was there before.

Ready for a Second Opinion?

If this checklist turned up a few question marks, or you'd simply rather have someone experienced walk the roof, Alpine Exteriors is based in the region and works throughout Skagit, Island, and Whatcom counties — including Conway, Mount Vernon, Anacortes, Burlington, Sedro-Woolley, La Conner, Stanwood, Camano Island, and Bellingham. Reach out for an exterior inspection, and we'll give you a straightforward read on what's holding up fine and what's worth addressing before the next wet season sets in.