 Builder weatherstripping can be made from felt; vinyl, rubber, or poly foam; EPDM cellular rubber and vinyl tubing; and metals such as brass and aluminum.Every exterior door, or door to an uninsulated room such as an attic, must be weatherstripped as required by building codes in various jurisdictions.The materials used in door weatherstripping are thresholds, a piece of material (either a sweep or a J-hook) to match the door to the threshold, and the actual weatherstripping itself.