A Perforated tarpaulin Tarpaulins also are used for ad printing, most notably for billboards. Perforated tarpaulins are usually employed for medium to huge promotion, or for protection on scaffoldings; the intention with the perforations (from 20% to 70%) is to lessen wind vulnerability. Thanked 29 Periods in nine Posts Arc https://pergola72692.wssblogs.com/34097240/fascination-about-pergola