Do the Kroftman products also have a type approval?

Usually they do not and a type approval is also not required for constructions. A drawback of a type approval is that adjustments/customization of the products is not allowed. Most Kroftman products therefore have a general structural calculation drafted by an independent German engineering firm. This in most cases allows one to acquire a building permit without any trouble. A location-specific structural calculation and inspection is sometimes required which we are happy to supply at an additional cost.