Ridge wind and river shade in Bridgewater
Bridgewater is hill country above the Housatonic, and its roofs face two different conditions. The high open fields take wind from the west and northwest, which lifts tabs, strips ridge caps and drives rain under the shingles on the windward side. The wooded hollows and the slopes down toward the river are shaded and damp, so moss, lichen and clogged valleys are the issue there. Snow is heavier than along the coast and holds longer on north faces, and ice forms at the eaves of old houses with uninsulated roof decks. Freeze and thaw swings pry at slate, wood and flashing alike.

