Darling Downs Tarpaulins makes top quality Builders Tarps from heavy duty, PVC fabrics. DDT Builders Tarps are commonly used to protect projects from wet weather but they are also used as Floor Sheets. Floor Sheets are invaluable when working on upper story extensions. They act as a waterproof layer between the construction area and property below thus reducing the threat of water damage to assets below the building area. Do you require a sheet that is not square? No problem! We can do any size & any shape, simply send us an email or fax with a diagram & measurements & we will do a quotation for you.