A perforated tarpaulin Tarpaulins also are used for ad printing, most notably for billboards. Perforated tarpaulins are usually useful for medium to huge advertising, or for cover on scaffoldings; the purpose in the perforations (from 20% to 70%) is to lessen wind vulnerability. Thanked 0 Occasions in 0 Posts Pergola https://andresvysug.thekatyblog.com/32847198/everything-about-izmir-pergola