A perforated tarpaulin Tarpaulins will also be used for ad printing, most notably for billboards. Perforated tarpaulins are generally useful for medium to significant promoting, or for protection on scaffoldings; the goal of the perforations (from 20% to 70%) is to lower wind vulnerability. Thanked 29 Instances in nine Posts https://tarpaulin70257.illawiki.com/1394913/not_known_facts_about_izmir_pergola