Windows are intended to seal tight and keep out moisture. However, older windows do not always do the job. So, how do you keep mold from growing on your window sills? Check out these expert tips:

Check your window seals

  • Do you see light coming from the frame of your window? 
  • Do you feel air or heat coming from the frame of your window?
  • Do water droplets form around the seals?

If you answered yes to any of these questions, then your window seals are not sealing properly. Run a nail file around your frame. If it slips into the seal or adhesive, then the seal is broken. A broken seal not only allows for mold growth but reduces the energy efficiency of your home.

Reduce Condensation

  • Keep all air vents open so your A/C can work efficiently
  • Set your thermostat above 70 degrees to reduce condensation
  • Regularly open windows to allow fresh air to circulate within your home

By reducing moisture buildup in your home, you can reduce the chances of mold growing on your window sills. Fresh air can help dry out moisture, as well as push clean, healthy air through your home.

Clean Windows and Sills

  • Regularly vacuum and dust bedrooms
  • Use the bathroom’s vent fan when showering or bathing
  • Make note of any excessive moisture buildup
  • Wipe down window sills with a dry cloth

Bathrooms and bedrooms are common places for mold growth. Dust and moisture easily penetrate these rooms so regularly wiping down windows and sills will help mold spores from building.

Mold thrives in moist environments, so if you see mold on window sills you might have it within your walls, as well. Always do a thorough check of your walls and ceilings if you see any mold growth in your home. If your window sills have any mold growth, it might be worth your while to price new, energy efficient replacement windows.