Picture this – You’re renovating the house and building a new pergola, have just finalized the number of purlins and rafters required for the whole setup and now wondering how many pieces of Vulcan Polycarbonate Sheets and BDN PlastXpand™ or BDN POLY-FAST™ screws are required?

We have devised a simple, easy to use calculator that will give you a clear idea of the number of sheets and fasteners to prepare.

Please contact us for more information should there be any additional questions.

Sheets Required: pc(s)

Fasteners Required: pc(s)

*From ridge to gutter – Round up to the nearest, +0/-10mm allowable tolerance