Packing (firestopping)
Videos
Packing is the process and/or the materials used in filling both service penetrations and building joints with backer materials as approved components within a firestop.
Ceramic fibre used as packing to support firestop silicone caulking
Caulk
Videos
Caulk is a material used to seal joints or seams against leakage in various structures and piping. The same word is also the verb for the action of applying such sealing material.
Silicone-based caulk on this upturned bathroom sink will spread smoothly, sealing the gap, when the sink is turned over and installed.
Dried-out caulking on the Severn trow Spry, now displayed on shore
Man applying caulk to baseboard
Silicone caulking extruded from a caulking gun