How to Seal & Lubricate Wood Sash Windows

Updated February 21, 2017

Wood windows can add a sense of warmth, elegance and tradition to a home. If you are fortunate enough to have wood sash windows in your home, you will want to maintain them properly so that they last a long time. Sealing the wood surfaces and lubricating the window mechanisms are an important part of maintaining these windows.

Use a fine-grit sandpaper to lightly sand the surface of the wood areas to be sealed, removing any imperfections or marks.

Clean the wood surfaces to be sealed with a mild solution of dish soap and water. Rinse with a damp, clean rag and then allow the wood to air-dry completely.

Put a strip of masking tape along the edge of the glass right next to the wood areas being sealed to protect it from the sealant.

Apply the wood sealant with a paint brush and according to the manufacturer's directions. Don't be afraid to lap the sealant up against the masking tape so that you will get proper application of the sealant along this important area where the wood and glass come together. Allow the sealant to dry completely. Do not cover any mechanisms or latches with the sealant.

Gently "puff' some powdered graphite into those mechanisms that need lubrication but are hard to reach. This will lubricate the mechanism, but prevent dirt or dust from sticking and building up in an area that is hard to clean, which can happen with an oil or grease lubricant.

Apply a little petroleum jelly on the sliding metal surfaces of the windows. Use a paraffin or paste wax for those parts of the window at which wood rubs on wood.

Things You'll Need

  • Fine-grit sandpaper
  • Dish soap and water
  • Clean rags
  • Masking tape
  • Wood sealant
  • Paint brush
  • Powdered graphite
  • Petroleum jelly
  • Paraffin or paste wax
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About the Author

Anthony Smith began writing for Demand Studios in May of 2009 and has since written over 1400 articles for them. He also writes for "The College Baseball Newsletter." He attended the University of New Mexico, and has more than 25 years of experience in the business world.