Lynden keeps its town tidy — the Dutch storefronts and windmill on Front Street, the trim yards, the well-kept ranches and farmhouses spread between the raspberry fields — and the roofs here are expected to match. But north county weather does not cooperate politely. Lynden sits in the path of the Fraser Valley outflow, and when a winter northeaster funnels down out of British Columbia, this is one of the windiest, coldest corners of western Washington. Roofs in Lynden are chosen by that wind, whether homeowners realize it or not.
Roofing for Northeaster Country
The cold outflow events are Lynden's signature roofing hazard. Sustained northeast winds pry at ridge caps, rakes, and the field shingles of any roof that was nailed casually, and the accompanying hard freezes turn marginal ventilation into attic frost and ice-dam trouble at the eaves. When we roof in Lynden, we build for that specific enemy: shingles rated for high wind, six-nail fastening as standard rather than an upgrade, hand-sealed rakes and ridges on exposed elevations, and ice-and-water membrane run at eaves and valleys because north county gets real cold snaps that the coast never sees.
Ventilation gets equal billing. A dairy-country farmhouse with a century of remodels, or a 1970s ranch with bathroom fans venting into the attic, will grow condensation all winter — we find frost on the underside of sheathing in Lynden attics most cold Januaries. Correcting intake and exhaust while the roof is open costs little and adds years to the new shingles.