Caulk is non-sagging, so it won't drip from vertical and overhead surfaces.

Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement a sealant can sustain. Caulk is best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.

These coatings are often used on castings, dies, and mirrors to prevent rust, abrasion, and moisture penetration. Water-based coatings are low odor, so they’re a good option for use in enclosed areas. Apply with a brush, roller, or sprayer.

Use these coatings on structural lumber, decking, and wood shingles. Apply with a brush, pad, roller, or sprayer. Reapply every five years on exterior wood; coatings protect interior wood indefinitely. Once fully cured, they can be painted over with water-based paint.