Haining Yichuan Textile Industry Co.,Ltd: Lumber tarps are specifically designed to cover lumber, trusses, trim molding, wallboard, and other wood products during transportation. Custom lumber tarps can be made to fit specific applications. PVC coated tarpaulin materials used to make the tarp, such as water-resistant tear-stop parachute nylon material with a high strength to weight ratio. 4ft, 6ft, 8ft drop is the most popuar size in the marketing.