Barge board help

Need to install colour bond roof, soon.
But have a few questions about barge board installation on my sloping skillion end walls.

Q1 do i need a barge board?

Q2 how would i flash / seal the edge of roofing iron and still be able clad the wall?

Ty in advance

any advice or links most appreciated

wobbly

Usually you install a barge board offset the depth of the cladding then install the roof with a Colorbond capping over the top. From memory they are about 150mm wide by 75mm down. That way you can put the roof on so the rest of the place is water tight from above and you can do your walls at your own leisure.
http://shedblog.com.au/shed-barge-cappi ... zincalume/
The capping goes over the barge board which goes over the cladding. You can do away with the barge board and have just the capping but it doesn't look as good plus you need something to cover the ends of the eaves at the lower end of your sloping roof.

Stewie

Ty Stewie.
So what is the normal barge board size please and is it pine ?

any pics or links pls

180x25 or 230x31 treated pine, pre primed and from memory up to 7m long.
If there is no eave you will need to pack the barge off the wall so you can run the cladding in behind.
Theres 2 ways to seal between the roof and barge. 1 is a straight barge cap that goes over the roof and down the outside of the barge, the same as in the link Stewie provided.
The other is a gable roll, it secures to the top of the barge before the roof, the first sheet edge sits in the roll. its a fairly neat way to finish the edge.

Ty mgilla