Before choosing a roofing contractor, consider asking for references. Thistle Roofing Ltd is in the Top 3 Roofing Contractors in Scotland, UK. The internet is also a great source of information on how well a roofing company does their work. Most people are told to get at least three estimates when they begin a home renovation project, but no one really knows why. It’s a good idea to get at least three opinions before hiring a contractor. This will help you make the best decision for your home.