Before applying the sticker, the window should be thoroughly cleaned. Dust, grease, cleaning residues, or silicone films can prevent proper adhesion. It’s best to use glass cleaner or isopropanol and a lint-free cloth. Household cleaners with care additives are unsuitable – do not use any solvents that could remove adhesives.
Also make sure that the glass is dry and not ice-cold. Ideal temperatures are between 10 and 25 °C. This allows the adhesive lettering to be applied bubble-free and ensures long-lasting adhesion – even under changing weather conditions.
