Roof glazing – aluminium frames pitting

Causes

Build-up of air-borne salt, dust or dirt 

Lack of rain washing

Listed under: glass, aluminium, Roof, windows

Cause

Build-up of air-borne salt, dust or dirt 

Repair

  • aluminium joinery should be cleaned on a regular basis. Manufacturers often recommend cleaning once every 3–6 months but more frequently closer to the coastline. Use warm water and a mild household detergent and rinse well. Dry the glass to avoid marks. Avoid acid or alkali or solvent-based cleaners. Do not use steel scrapers or steel wool
  • if the visual appearance is unacceptable, recoating the frames may be an option. Ask for recommendations from the joinery manufacturer/supplier. In some cases, washing down with a proprietary cleaner, lightly sanding with a very fine sandpaper and then using a good quality paint system – a primer and 2 topcoats designed for the purpose – may be an option
  • there are also specialist companies that restore the surface of aluminium joinery. Pitted or discoloured aluminium frames may be able to be treated and refinished with a coating that restores the appearance
  • always tell someone when you plan to work at height. Follow this guidance around using ladders and scaffolding safely

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Cause

Lack of rain washing

Repair

  • as for the first repair above

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