chemical names for ingredients, pay attention to the indications on the label. Look for words like "elas- tomeric" and "flexible" which means the bead will bend and stretch in lieu of breaking when the surrounding substrates move. The company Sashco makes a water-based caulk/sealant called Big Stretch that will twist, bend,
compress and stretch more than 500 percent of original size. "Adhesive" is another good characteristic for caulks, especial- ly for application to substrates that are difficult to stick to. If a bead pulls away from the sub- strate, then the seal has failed, so adhesion is very important. A high-quality caulk/sealant such as Lexel, which is essentially a liquid rubber, will even stick to wet surfaces.
Lexel is a high-performance sealant that will even stick to wet surfaces.
The makers of Gorilla Glue have a new 100-per- cent silicone Gorilla Clear Sealant that is waterproof, mold and mildew resistant, won't yellow, shrink or crack, and is ready for water exposure in just 30 minutes.