Rockwool stud cavity insulation inside a drywall assembly under construction, showing the completed firestop (made of stuffed rockwool packing topsealed with self-leveling silicone <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">firestop</a> caulking), together with teck (armoured) cable penetrants leading to an electrical outlet box.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2007-05-20
<span class="int-own-work" lang="en">Own work</span>