1. Do not use strong chemicals or detergents when cleaning office signs, especially the ones with small granules. This may increase the wear and tear and leave unwanted marks on your signs. Clean water and liquid soap is the best way to maintain many types of signs.
2. Remember to use a soft cloth for window graphics such as sandblast and vinyl signs and avoid pressing down the cleaning cloth around the edges and corners as most signs lift from the corners and edges.
3. Do not detach signs and access signage back panels. Do not attempt to stick cut out letters with glue as this may be hazardous. Rather call in a sign company to replace the missing letter. The costs may prove to be far less.