I've used 12mm plywood faced with a smooth grp surface for a shower room.
Comes in 8' x 60' sheets! yes eight foot by sixty feet. Basically its to
make artic lorry trailers. I think the company had a name like 'Boon' and
supplied lorry building components.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.