It’s important to choose the right caulk for the job at hand, and in this article we’re going to look at some of the basic pros and cons to using silicone caulking.

As far as the pros of silicone caulking, it’s best used on non-porous surfaces such as tile, glass, and metal surfaces. It’s very durable, extremely adhesive, remains flexible over time, and, most importantly, is very impervious to water, which is why it’s commonly used in tubs and showers and other areas regularly exposed to water. Silicone caulk is mildew resistant and won’t yellow over time.

On the con side, silicone caulk is silicone-based, so unlike acrylic/latex caulks it won’t clean up with just water, so you’ll need rubbing alcohol for cleanup (both you and your tools). It’s a good deal more expensive than other caulks and most types of silicone caulk cannot be painted (although some newer varieties are paintable). Silicone caulk also releases ammonia as it cures so you’ll need good ventilation when working with it as it smells very strongly. It’s typically available only in colors of clear and white, so your color choices are limited.