fixing door threshold/sill

Dear Door Gurus:I having a failing door threshold/sill. This is mountain country, high elevation, tons and tons of snow. This spot is flooded with direct sunlight so I guess it… Dear Door Gurus:I having a failing door threshold/sill. This is mountain country, high elevation, tons and tons of snow. This spot is flooded with direct sunlight so I guess it…Read MoreGreenBuildingAdvisor