About Roof truss Installation

About the late 1950's early 60's prefabricated roof trusses came onto the scene. The name that still sticks with me is Gang-Nail. I may be wrong but I think they were the first company to build roof trusses that rely on a multi nail plate connector to mass produce cheap and easy roof trusses.

There were quite a few methods of joining trusses around at the time, but most of them needed some drilling and bolting. The Gang-Nail plate is just a flat galvanised plate that has stamped in a press to produce dozens of pointed spikes on one of it's faces. One is placed on each side of a plain timber butt joint, and then a hydraulic press forces the plates together forming an extremely strong joint.

They are no longer the cutting edge of roof design, rather they are used for the thousands of simple cost effective house designs that are mainstay of the house construction industry. They can not be used for flat pitch roofs.

This type of roof construction is governed by strict Australian Standards. ( AS4440 at time of writing, but without a doubt it will change sooner rather than later.

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