1. It is always important to clean surfaces just prior to any installation.
2. “Which preparation for which surface?” While many will work, a good rule of thumb for the last cleaning is:CAUTIONARY NOTE:While it may seem logical that a strong solvent will be the best cleaner for surfaces that are hard to stick film to – in the case of many plastics and paints this is wrong and can lead to premature sign failing due to embrittlement, cracking or loss of gloss. Use the mildest solvents possible and only clean until the surface dirt is gone.
|Isopropyl Alcohol (IPA)|
|Glass||IPA or Vinegar/Water Mix|
|Acrylic And Polycarbonate||Non-siliconized Acrylic Cleaner or anti-static rag to remove static charge and last minute dust|
|Banners And Awnings||IPA or Vinegar/Water Mix|
|Vinegar followed by a quick wipe with Toluene|
|Vehicle*||IPA / H20 (50:50) Mixture|
|Painted Walls†||IPA / H20 (50:50) Mixture|