Reviews by Mungadog
Ivan installed three colour bond wirley-birds roof exhaust vents on our roof plus four eve air vents. He did an excellent job, takes pride in his work, was well priced and also picked a few existing roofing issues and fixed them at no extra charge.
Also the whirlybirds fitted had steel ball bearings not nylon. In other words he used quality fittings.
Approximate cost: $650