Wood Window Frames
If painted, use a solution of mild detergent and water, or a mild commercial cleaner whose label says it is safe for painted surfaces. Always rinse off solution. Wipe off excess water with a dry cloth. Do not use strong cleaners or scouring powder as these will damage the paint. If you plan to clean window frames, do it before cleaning window glass so solution does not spot glass panes. If varnished or natural finished, vacuum or dust regularly. Clean infrequently, only when really needed. Use a commercial wood cleaning product or cleaning wax whose label recommends use on natural wood finishes.
Aluminum Window Frames
If painted, use a solution of mild detergent and water, or a mild commercial cleaner whose label says it is safe for painted surfaces. Always rinse off the cleaning solution. Wipe off excess water with a dry cloth. Do not use strong cleaners or scouring powder as these can damage the paint. If you plan to clean window frames, do it before cleaning window glass so solution does not spot glass panes.
Clear or colored anodized aluminum resists weathering, and can be washed with mild detergent and water like painted frames. Solvent cleaners can be used to remove grease spots from anodized frames. Never use abrasives on either anodized or painted surfaces as they will scratch it.
Bare, unfinished or mill finish aluminum gradually weathers and turns gray. It forms its own oxide coating which protects it. (A coat of clear lacquer will prevent this.) In early stages of weathering, washing with soap and water will restore brightness. If you want to restore brightness when it has weathered more, stronger cleaners or mild abrasives will be needed. Test any new cleaner on a hidden spot to be sure it will work satisfactorily.
Do not clean aluminum if it is hot to touch, or if temperature is below 50 F. Always remove all traces of cleaner thoroughly, with water-rinsing, or, if a solvent wax type by wiping. Avoid excessive use of abrasives which leaves permanent scratches. Badly weathered window frames may be washed with soap and water, rinsed thoroughly, and painted.
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