Final knowledge test

1) What is the key difference between the supply network and the drain network in a building?

2) Which type of leak is usually hard to detect without specialized devices?

3) What physical principle explains a cold blue area in a thermal image when cold water leaks?

4) When is tracer gas preferred over thermal imaging or acoustic detection?

5) What is the "overnight shut-off test"?

6) What is the basic difference between waterproofing and thermal insulation?

7) Why should power be disconnected from wet areas before an inspection when possible?

8) What must any professional inspection report include?

9) What is the correct practice for pricing any additional repair during a visit?

10) Why is relying on a single detection device without further confirmation a common mistake?