Tooled up

Hello guys, Newbie here - am about to assemble a SIPs kit garden room and I need to wrap it before cladding.... Shall I use a 1.2metre wide roll x 2 or a 2.7m wide roll? I know the wider one will be quite unwieldy but is there a benefit to have less joins? Thanks a lot

thanks for the replies so far.... My roof panels are SIP so no joists (other than the timbers within/joining the SIP) So I guess I should speak to the supplier about load capability... .

Hello guys, Building a SIP garden room from a kit. Having a slightly angled flat roof and we would like a sedum roof on the SIP panel roof. Thoughts? Weight? And can I use a typical EPDM for that? Be great to hear what you think? Cheers