River air, snowmelt and aging shingles
Homes near the river sit in cold, damp air that lingers in winter. Frost and condensation form in attics, and poor ventilation lets moisture settle on the deck and rafters. Over years that causes stained ceilings, softening wood and shingles that age quickly.
Snow load and melt are other factors. Heavy wet snow sits on roofs, and thaws send water to eaves that may still be frozen. Valleys and low spots collect meltwater and test every seam. In newer subdivisions, trees are still small, so roofs are exposed to wind. In older streets, mature trees add leaf litter and limb risk. We look at the surroundings as well as the roof itself.
