Remove Water Stains From Wood Window Frames

September 19th 2014
Remove Water Stains From Wood Window Frames


Q:  The interior wood window frames in our home were left unfinished.  Condensation from the windows has stained the wood.  We want to finish the frames.  Is there some way we can remove the stains in order to finish the wood and keep the light colour?



A:  Wood window frames and sashes that are being left for a clear light finish look should always have a clear sealer applied immediately after installation to eliminate potential water staining.

Homes constructed in the cold months of the year will invariably have high moisture content inside because of drywall or acrylic paint drying.

Windows, being the coldest spot, will attract the warm moist air causing condensation.  Therefore, it is important that exhaust fans in all areas – bathrooms, laundry and kitchens – be used regularly to reduce the relative humidity and minimize high moisture content in the home.

Water stains on natural wood can be removed by mixing a solution of equal parts white vinegar and warm water.  Scrub the stained area with a small stiff nylon bristle brush and blot dry with a towel.  Continue this process until all visible stains have been removed.  Rinse well with clean water.  Dry with a hair dryer until clear surface obtained.

Use clear, acrylic latex-based urethane for the finish such as Varathane or Minwax.  Apply tow coats with a light sanding in between.