OK to be an owner builder you need an owner builder’s permit and of course to get an owner builders permit you will need to do an owner builder’s course. However, in doing this owner builder’s course you will not be taught about the ramifications of condensation in the roofspace and the need for an effective roof ventilation system to keep your roofspace dry.
At this point I would guide you to BLOG on this site “Warning! Read Before You Design Your Next Housing Project” and also BLOG “A Message To Builders In Victoria” these blogs will enlighten you on the ramifications of condensation in the roofspace. As well as these blogs there are many other blogs on this site that will be very helpful to the owner builder, that you will have no knowledge of from doing the owner builders course. Hope this blog has been useful to you, when you are looking for the best roof ventilation system for tiled or colorbond corrugated roofs look no further.
Universal Tile Ventilators are the best systems for roof ventilation.