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
Firestop
Videos
A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to ma
Fire test of mortar-based firestop
Pipe with metallic piping penetrations in a 2-hour fire-resistance rated concrete floor slab
Inadequate firestop with rockwool
Firestop mortar seal of a cable tray