If you plan to baby-proof your home for your toddler, why not fireproof his or her nursery as well? Fireproofing is a safety measure that protects your child during accidental fires. To reinforce your child's room properly, you'll need fire stop caulking. Fire stop is a soft, pliable material that forms a tight seal around doorways, windowsills and other openings after it hardens. Fire stop caulking offers several more benefits, including these below.