Caulk is a flexible material used to seal gaps and cracks around windows, doors, and other openings in a building. Over time, caulk can harden and become brittle, making it difficult to remove or repair. To soften up caulk, there are several methods that can be used.
One common method is to apply a commercial caulk softener. These products are typically made with a solvent that helps to break down the caulk and make it more pliable. Another method is to use heat. A heat gun or hair dryer can be used to warm up the caulk, making it softer and easier to remove. Finally, some people have success using vinegar to soften caulk. The vinegar is applied to the caulk and allowed to sit for a period of time before being scraped away.