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Weatherization


  • Up to 20 percent of the heat inside a typical building can be lost through windows and door, so be sure your windows and doors are properly caulked and weatherstripped.
  • Caulk cracks and gaps around windows and doors, in the building foundation, and between different building materials.
  • Install window treatments where feasible, such as shade screens, shades, awnings, or overhangs. If exterior treatments are not feasible, consider interior window film, insulated drapes, valances and/or blinds, or removable insulation material.
  • Drapes or blinds should be opened during the day to let sunlight in, which will also help heat the office. Drapes or blinds should be closed at night to act as additional insulation for windows.
  • Repair roof leaks. Insulation will lose effectiveness when wet.
  • Consider permanently closing and sealing doors and windows NOT needed for building access or ventilation and that are NOT used as safety or fire exits.
  • Keep doors between heated and unheated spaces and cooled and uncooled spaces closed, and install automatic door closers if needed.
  • Install door bottoms, thresholds, or door "shoes" to seal gaps beneath exterior doors and doors to unheated or uncooled spaces.