Local Directories and Search Engines: Start by searching for insulation suppliers and installers in Victoria on local business directories like Yellow Pages, TrueLocal, or Yelp. Also, use popular search engines like Google, Bing, or DuckDuckGo to find local businesses that offer insulation services. Industry Associations: Check out industry associations related to insulation and construction in Victoria. For example, the "Insulation Australasia" website may have a list of reputable insulation suppliers and installers in the area.