Cool! Three different recs for the company I work for - my group builds some of our
camera models. Nice to see we have brand recognition. Thanks!
To the OP: You might try contacting the New Zealand FLIR rep
here. The rep might be able to point you to a local firm who does thermal building analysis or where a rental camera might be available for 'do-it-yourself' applications. FLIR also offers thermography classes world-wide (including New Zealand in July) though the cost may be a bit more than you want to spend if you are not looking for professional certification.