Application Technique: Sealing the Gap With your chosen caulk in hand, it’s time to apply it. Begin by cutting the caulk tube’s end and piercing it if necessary to allow the caulk to flow ...

Open caulk can be used for up to two months by sealing the end of the tube and storing it in a cool, dry location.Seal opened caulk tubes by inserting a nail, covering the end of the tube, or with ...