A perforated tarpaulin Tarpaulins also are used for ad printing, most notably for billboards. Perforated tarpaulins are typically useful for medium to large promotion, or for protection on scaffoldings; the purpose on the perforations (from 20% to 70%) is to lower wind vulnerability. Thanked 0 Times in 0 Posts Pergola https://raymondhwhrx.wikipublicist.com/5181371/pergola_options