Cold Pour Crack Fillers | GemSeal- Pourable Asphalt crack filler and Joint Sealant ,Pourable Crack Filler A polymer modified asphalt emulsion cold pour crack sealer. Adheres tightly to sides of properly prepared cracks and joints to create a waterproof seal.Difference Between Cold Pour & Hot Pour Crack Filler - YouTube · The difference between cold pour and hot pour crack filler explained by veteran in the asphalt business for over 22 years. Cold and hot pour crack filler available on our website. Cold pour ...