Interior and exterior conditions also may impact a jobs success. Solvent-based selants require a lot of ventilation when used inside, due to the release of solvents during curing. Water-based products are best for inside use for these reasons. Todays caulks, whether they be for interior applications, exterior applications, or both, are formulated to be flexible, durable, and easy to use. Choose a product that is designed to perform under specific conditions.
Some caulks are flexible and meet demanding performance specifications.
Others are more durable, and others easier to apply. Consider the needs of your job and the factors surrounding it. Do not cut corners on quality. Reputable caulk manufacturers extensively research their products performance to ensure consistency and reliability. Most manufacturers provide free technical advice.