Paul1977:

 

mark0x01:

 

 

I haven't looked in detail at how other panels actually get mounted, so don't know how common this is.

 

 

 

The manufacturer specifies mounting point to be 390-490mm from the end (K).

 

When the rails must follow the iron roof's nail lines, this is not achieved for the majority of the panels.

 

Some panels have the nearest support for one corner over 900mm away, which might cause damage to the panel in high winds as it can flex.

 

 

@mark0x01 Are you saying K is over 900mm in some spots? That'd be halfway down the panel, wouldn't it? What is the measurement of A?

 

A is the "panel height" of about 1.760m, so over half is unsupported on one edge in places, depending on where rail is.

Biggest group is 12 panels as 4 wide x 3 high.