Flashing for new windows

[burraboy]

I'm asking this for my daughter who has had a brick veneer wall cut out to install a big sliding door/window onto a new deck. There doesn't seem to be any flashing involved in the new installation, above or below, or to the sides. Is this the usual case?

[r3nov8or]

Not normal. See example guides here

https://www.bradnams.com.au/professionals/product-installation/

But might be excused if set back several metres under a verandah or similar