Flexible waterproofing yog ib txheej waterproof tsim los ntawm kev tso thiab sib txuas cov ntaub ntawv hloov tau yooj yim xws li asphalt thiab linoleum, los yog cov ntaub ntawv txheej nrog cov khoom siv hluavtaws polymer ua lub cev tseem ceeb ntawm cov dej tsis zoo, uas yog hu ua hloov tau yooj yim waterproofing.
