I am about to reinstall an old General Electric "Air Wall" register. On
the back side, there is a strip of metal running around the inside of the
perimeter of the register. It is about 1/4" from the edge of the register
and is attached by what appears to be two heavy duty staples at the bottom
and caulk between the strip and the register. The caulk is crumbling and
missing in places.
Is that caulk that I am actually seeing, what is its purpose, and can I
dig out the old stuff and replace it with new acrylic or silicone caulk?
The register matches those in the rest of the house so I would rather not
replace it. I understand that the design dates back to the 1950s. My house
was built in the 1960s.
Thanks in Advance.