I am planning to install a 3500*1000 mm 10 mm kanalplast on a greenhouse and was wondering if it's possible to mount the entire piece without having to divide it into sections over each roof truss?
The real question is whether the brackets can support such a "large" piece.
It may depend on several factors. Do you have as many brackets as the manufacturer suggests? What type of brackets are they? Are they intended to be mounted on the type of surface you have?