Here’s the good news about Roof leak repair.
Whether you hire a general roofing contractor or a leak repair business, always find out their plan of action. In other words, if they only offer you a quick patch job and refuse to mention the true cause of the leaks, you need to call a few more roofing companies until someone gives you the whole truth and nothing but the truth.
How will you know if your are being told the whole truth?
Your gut reaction is always the best indicator. For a more practical approach, ask for specific examples of leaks that the company has recently solved. Get references. Phone all the references and listen to exactly what they say to you. You can also compare what each leak repair company outlines for your house as their ultimate solution.
Normally the roofing companies that have been in business for more than 10 years are the best bet. Though keep in mind that some of the huge companies are very busy and can often be less reliable than the smaller companies.