Cement stains are something that you never want to get on your aluminium frames because it can, over time, actually damage the aluminium actually eating into the surface of the metal because of a chemical reaction with the cement. If there is construction going on around or in your building, be sure to shield your frames as well as you possibly can. Making sure that the stains do not make it onto the aluminium in the first place is your best defence against them. If, however, something does go wrong, here is how to deal with a cement stain.
To start off with, get started cleaning off the cement as quickly as you possibly can the longer the stain is there, the more damage will be done to the finish. Get a bucket of water and mix in around about 75ml of detergent clothes washing detergent is your best bet. Get a soft bristled scrubbing brush and apply to the stain apply in a circular motion and see how much you are able to remove from the surface.
For a really tough stain, you may want to apply the mixture and leave for about half an hour. Rinse off and see if the process needs to be repeated. Always do the final rinse with water only. By now, you should have gotten rid of the worst of the stain. All that should be left is the damage to the finish. Be sure to dry the area thoroughly before you carry on to the next step.
Polishing the frame should help to minimize that stain even more. Make sure that you get a purpose built aluminium polishing crème and work it carefully over the area of the stain. Use a soft microfibre cloth to apply the polish and a clean microfibre cloth to remove the polish again. Buff until the metal shines and the stain will become even less evident again.
Alternatively, you can get a buffing attachment on your drill that can be used to great effect all this is is basically a dense foam sponge. This is the way to go if you are short on time. It may be necessary to wash and buff up all the http://www.cityaluminium.com.au so that you have a uniform finish all over. Use your own discretion to determine whether or not this is the case for you as well.