<a href="//commons.wikimedia.org/wiki/Fire_test" title="Fire test">Fire test</a> preperation with re-entry of <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">firestop</a> mortar in a <a href="//commons.wikimedia.org/wiki/Cable_tray" class="mw-redirect" title="Cable tray">cable tray</a> penetration, re-sealing using intumescent firestop caulking for fire-test-proven compatibility between mortar and caulking in the same certification listing.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2007-06-22
<span class="int-own-work" lang="en">Own work</span>