Standard panels used as roof - questions about mounting

Hi,

I have some solar panels here that are not in use. They are 1m x 1.7m. I'm building a new home for my biogas system - basically a wooden shed. I thought of using the solar panels as roof but I can't find any solution how to mount them close to each other on a wooden structure.

How do I fasten them to the wood? And how to make sure that between the panels no water leakage happens?

Thanks!