Homes around Lake Samish live under the trees. The lake sits in a forested bowl just south of Bellingham off I-5's exit 246, ringed by steep, timbered slopes that keep many lots in shade for much of the day — and shade, in the Pacific Northwest, is the hardest thing you can do to siding. Alpine Exteriors replaces and repairs siding on Samish Lake homes with the moisture math of this valley in mind.
What Shade and Lake Air Do to Walls
Between the lake's humidity and the forest canopy, north- and east-facing walls here can stay damp for weeks at a stretch in winter. That is the recipe for green algae film on vinyl, black mildew tracks on painted wood, moss gaining a foothold on horizontal trim, and — wherever flashing was skipped or caulk gave out — rot working quietly behind the cladding. Many Samish Lake houses began life as seasonal cabins and grew by additions, which means walls often carry two or three generations of siding, with every transition a potential leak point.
Carpenter ants follow the moisture. More than once we have opened a soft corner board on a lake house and found the real damage extending several feet in every direction behind perfectly ordinary-looking paint.
