Has anyone used Bunnings Structural Isulated Panels to build a house/roof?

[Suesnews]

hi ive found this page of Bunnings Structural INsulated Panels - SIPs - am thinking of using this for a skillion roof over a small 4.5m wide extension.  

Has anyone used these? I need info on how thick they are = looking for R4 rating for the roof  http://wholeofhouse.bunnings.com.au/pdf-productpackage/MidRiseTimberBuildings-SIPS.pdf

[Brad]

Floor and Roof Panels

Thickness: 175mm (R4.4) - Contact us for thicker sizes
Width: 1200mm
Length: 2400mm, 2700mm, 3000mm, 3300mm, 3600mm, 4800mm, 5400mm, 6000mm - Refer to our Roof Panel Specifications for max. spans

https://www.sipsreadycut.com.au/index.php/products/sips-ready-cut/ready-cut-components 

[MitchellMc]

Hi @Suesnews,

I see you have already received a helpful reply from @Brad which is fantastic. I note he has found the information relating to the R-value of the roof panels which is R4.4 at 175mm thick.

Please let me know if you need further information or had any questions.

Mitchell

[Suesnews]

Thanks Brad - I'll do my measurements and get a quote from the trade desk.  Do you know if the 175 are structural and can be self-supporting over a 4.5m span (ie and can be walked on, carefully, for cleaning gutters etc).  I'll see if i can find that info on the specs.... and Id imagine i would batton along the panels, put reflective foil, then add the colourbond roof sheets??

I'll do some more research, thanks for finding the R-values