Professional dealer installers have film-to-glass recommendations from their manufacturers to use in assisting the customer in selecting the correct film for the particular windows and product benefits desired by that customer.
Professionally installed films look better longer and are usually more likely to perform to specifications for their warranted lives, or even longer, than those improperly installed.
Professional dealer installers have experience and/or training which can help them to identify unique or unusual circumstances which might affect either the installation or performance of a particular product in a given situation and might not otherwise be noticed.
The warranties offered on quality films installed by professional dealer installers usually cover costs of removal, costs of replacement film, and costs of reinstallation. Film purchased elsewhere will likely only be covered for costs of replacement film in the event of a problem or product failure.
Remember that the best film installed improperly or used in a situation where a professional dealer installer might not otherwise install that particular film will likely not live up to the customer’s expectations.