A perforated tarpaulin Tarpaulins are also used for advertisement printing, most notably for billboards. Perforated tarpaulins are generally useful for medium to big advertising, or for cover on scaffoldings; the intention from the perforations (from 20% to 70%) is to reduce wind vulnerability. Thanked 29 Times in nine Posts Arc https://rafaelnqokz.buscawiki.com/1360471/pergola_no_further_a_mystery