sandwich panel question

hi,

I have an existing deck that has a solid roof/floor on top. underneath I'd like to install some of the insulated sandwich panels, as I how ever they all seem to come with a colour bond (corrugated or trim deck) style roof sheet, as they're obviously meant to be the roof and the lining.

I really only want the lining part

Can't you actually buy these panels with the plastic lining on both sides? That way I can use the captive flashing on either end and some adhesive to stick it the joists


https://roofingwarehouse.com.au/wp-c...06/corro-1.png

well answered my own question

looking for something like the versiclad ceilink
https://versiclad.com.au/product/ceilink-insulated-ceiling-panels/?utm_term=drop%20ceiling%20tiles&utm_campaign=6063_VC_SEM_GA_TEXT_BRD_Brand+Categories&utm_source=adwords&utm_medium=ppc&hsa_acc=7099043737&hsa_cam=20018321473&hsa_grp=146982759774&hsa_ad=655809996849&hsa_src=g&hsa_tgt=kwd-20515611&hsa_kw=drop%20ceiling%20tiles&hsa_mt=b&hsa_net=adwords&hsa_ver=3&gad_source=1&gclid=EAIaIQobChMIob_WhrzvhwMVCA97Bx3S6BfIEAAYASAAEgKeyfD_BwE