Stains on window and door glass
Cause
Alkaline run-off from concrete, cement plaster or cement mortar
Repair
- avoid alkaline run-off over the glass by painting concrete and cement plaster, diverting run-off from cement mortar
- clean windows more frequently in areas of high atmospheric pollution such as industrial areas
- if staining is not too severe, rub a paste of jeweller's rouge or whiting over stained area, rinsing thoroughly after application Alternatively use a proprietary glass cleaning system
- replace severely deteriorated glass
Repair
- use only non-alkaline cleaners
- clean windows more frequently in areas of high atmospheric pollution such as industrial areas
- if staining is not too severe, rub a paste of jeweller's rouge or whiting over stained area, rinsing thoroughly after application Alternatively use a proprietary glass cleaning system
- replace severely deteriorated glass