We want something that blends in, but because it's a zinc and colourbond shed home, I want to choose a colour that makes it look more like a house and less like a shed. I was looking at basalt but my husband would prefer a lighter colour for keeping the place cool in summer. My original choice was windspray but I'm a bit concerned it won't contrast enough with the zinc roof...but perhaps better than dune that might look too 'sheddy'...so hard to decide!

Thanks for your thoughts, they have helped us with our decision. We're now planning on using the barramundi roof tile (it's a grey, a bit softer than the soho nights black. And not so shiny) with matching gutter and fascia. And the cladding in paperbark. I was thinking cream windows instead of the timber, so there's some lighter colours on the brick downstairs to tie it to the top. We can't match it exactly to the paperbark cladding because we aren't using aluminium windows, but I'm hoping the cream (which is supposed to be more of an off-white with this manufacturer) will look okay in the clad dormers upstairs. Fingers crossed!

I just googled & found this site, which quotes cost of R2.5 75mm. there are other suppliers as well. What was quoted to you for cost of roof installation, and was it itemised so you can see exactly what thickness the foil-backed insulation builder will use? I'm guessing the thinner (lower R factor). So, the new quote should reflect a credit for the cost of previous insulation, since it won't be used, then cost of thicker insulation added. Does that make sense? If you are unsure, best to speak with the builder. https://www.pricewiseinsulation.com.au/product/heavy-duty-fletcher-permastop/

I wonder how much time you might have to spend cleaning the roof behind the parapet, perhaps the rain will take care of that, leaves?. If you were going to use these spaces as terrace you would need to adjust the height of the parapet or add a railing, if not the height of the parapet could be reduced