Can I wash and dry my rug after applying Fiber Lok rug backing? Monica P. March 03, 2020 14:41 Washing is fine but line drying is recommended to avoid heating rubber too much in the dryer. Related articles Fiber Lok is thick and dried out looking, Can it still be used? How long does it take for Fiber Lok rug backing to dry? Comments 0 comments Article is closed for comments.