Caulking your home windows will keep the moisture and air leaks at bay. It makes an energy efficient home, as the internal temperature will remain consistent this way. Air gaps in windows can lead to house problems and high costs, so it is essential to seal the windows properly. You don’t have to spend money on calling in for help, but instead, you can follow these steps to a successful DIY project on caulking your home windows.


Things you will need

  • Caulk tube
  • Caulk gun
  • Putty knife
  • Sandpaper
  • Damp cloth or popsicle stick



  1. Check all your windows to detect which ones have air gaps and need repair.


  1. Watch the weather, as you must caulk the windows when the temperature is at least 45 degrees Fahrenheit, and the humidity is low.


  1. Begin caulking the window by first removing any debris and dirt around the window with a sandpaper, and then using a putty knife, remove the old caulk.


  1. Load the caulk gin with the caulk tube, and cut off the tip at an angle with scissors.


  1. Begin applying it and sealing the exterior joints, sidings, and the framing.


  1. Use the damp cloth or Popsicle stick to smooth the sealant and remove the excess caulk.


  1. Allow the caulk to dry for 24 hours.