We *inadvertently* found water behind the vapour barrier in our basement. I called a mould testing company, but they recommended first calling Accu-Star to determine the cause. Best $300 I've spent on this house to date. Nev came to the house, on time, and went through the basement with me, explaining everything as he went. He explained that what I had found was relatively normal, but then pointed out other areas where moisture/water might be infiltrating. We then went outside and he took the time to help me identify where the problems were potentially coming from, gave me recommendations on how to fix it, and wrote it all up with photos in a follow-up report. And even though we were focused on the basement, he took a quick look at some other areas around the house and found that one of our upstairs toilets had a slow leaking gasket, which we would never have realized until it became a much bigger problem. I'd definitely recommend this company to give you the peace of mind and understanding of what's going on 'behind the scenes' of your house with totally non-destructive testing.