What is the name of this roof anchor? It was installed in 1972 on a low-sloped commercial roof. The anchors were installed to fasten 2 inch-thick fiberboard roof insulation to the supporting 1 1/2-inch metal roof deck. Thanks!!
(See the following post for the photo)
Last edited by House Engineer; 03-18-2012 at 02:34 PM.
Reason: Forgot to include the photo