A Perforated tarpaulin Tarpaulins may also be used for advertisement printing, most notably for billboards. Perforated tarpaulins are generally used for medium to huge marketing, or for cover on scaffoldings; the intention on the perforations (from twenty% to 70%) is to lower wind vulnerability. A large-duty poly tarp is heavier https://pergola11985.wikinstructions.com/1379891/izmir_pergola_an_overview