Originally Posted by Dave Martiny
Lineco makes a "Self-Adhesive Frame Sealing Tape" (item L387-0151) just for this purpose. I use it in the rabbet of all the wood frames I make.
It is a good product, no question. We use it ourselves, because people expect it, but in my opinion it is no better than simple aluminum duct tape.
This opinion is echoed by quite a few conservators.