All of our products have their own pages with detailed installation instructions however you can expect to see some common themes. Remove any dirt or filth from the glass and allow it to dry before applying the decals. After removing the backing spray the back of the decal with water with one or two drops of a mild detergent for a wet install (clear window decal opaque window decal frosted window decal). Perforated decals and vinyl letters should not be cleaned with water of any kind. Put the wet decal on the dry glass and use the squeegee to get rid of the remaining moisture. The adhesive will start working once the water evaporates. It will take more than one person to apply large decals correctly. Be sure that the decal s sticky side doesn t come into contact with any other adhesive backing whether it s wet or dry. For this reason huge decals are best applied by a crew.