That would be Butyl rubber tape and it will stick to glass permanent. Tape will work as long as the object is not to heavy or area very hot. It may sag over time so it best to have at least one anchor which can put into the grout. Butyl tape can be found at most auto parts stores or window repair shop.


Merritt

Business Telephones & Equipment + Commercial Audio/Video Products
Commercial Communications . . . Turner, Maine
If it was built after 1980 don't expect it to work right.