I will add the following due to losing a 20.00 bet to my new boss over 40 years ago. And ironically it was using silicone as an adhesive. BTW that 20.00 was A lot of $$ back then frown

the most important part of of using any adhesive is surface preparation. Remove all foreign material, paint etc. Degrease with Acetone. Sand both surfaces with CLEAN 80 to 36 grit sandpaper or sandblast if possible.
Clean the surface again with acetone if needed and follow up with alcohol. Wipe with clean white paper towels until the stay clean. make sure there is no lint left from the towel
DO NOT touch either surface with your bare hands. use disposable glove if needed.
Follow the Manufacturers instructions to the letter beer

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