Never heard of it but it sounds like it's being sold at the dealer end and would be warrantied through the dealer or "roadblock " directly.
IMHO, there isn't a big difference in paint protection film as long as it's high quality. A tint shop or tint forum would probably know about "roadblock" film.
IMHO, there isn't a big difference in paint protection film as long as it's high quality. A tint shop or tint forum would probably know about "roadblock" film.