Box profile gap

[LMPom]

We're putting up a shed shortly, it will be clad with box profile to floor level. Due to ground levels will probably end up putting a couple of courses of blocks to make the bottom up. My question is what would be best to seal the gaps between the sheets and blocks to stop draft/ wildlife. Shed will be for a workshop and dry storage so needs to be well sealed. Expanding foam is my only thought but am worried rats would eat through it.
Anybody done anything similar?

 

[solo]

You need a drip tucked inside the sheets then the ribs are capped off and the drip is tec screwed to the baton before fitting the sheets on.

 

[LMPom]

You need a drip tucked inside the sheets then the ribs are capped off and the drip is tec screwed to the baton before fitting the sheets on.

Perfect, thankyou