A perforated tarpaulin Tarpaulins may also be used for advertisement printing, most notably for billboards. Perforated tarpaulins are generally employed for medium to big advertising and marketing, or for protection on scaffoldings; the aim on the perforations (from 20% to 70%) is to reduce wind vulnerability. Thanked 29 Situations in https://eduardoegdar.blogolenta.com/31134686/detailed-notes-on-izmir-pergola