Attaching sensors to metal window pane

[x10challanged]

I am attaching window sensors to metal window panes, I read somewhere in the forum a month ago about what to use and can't find it again.  Since I am in Texas the temp ranges from 30 to 110 degrees and am sure the adhesive strips supplied will not hold long.  I think it was a specific type of 3M glue?

[Knightrider]

while gorilla glue does claim to bond metal, i would not use it.  gorilla glue is a urethane based adhesive that tends to swell as it cures (moisture cures it).  it is also very messy, and clean up is best done after the adhesive has cured.  it's kinda like expanding foam insulation, without all that expansion.  clean up is best done with a razor blade.
in your situation, if you want something permanent, try some two part epoxy (the clear stuff, not JB weld).  if you want something not so permanent, try titanium enriched silicone (100% silicone caulk).  you'll probably have to tape it in place overnight, but this will hold through all the expansion/contraction.  DAP TI silicone is a good brand.  Cleanup can be done by misting the offending area with denatured alcohol (will remove LATEX paint) and smoothing off with your finger or a rag.
cheers

[zach1234]

Good one KR. I never thought of that.

[x10challanged]

Thanks for the input,  I did some research and ended up with GE Silicone II clear, mounted 22 sensors with it last week.  Time will tell how it holds.

[JimBing]

I see that you already have done the job but for others out there who are interested, my company out here in the Seychelles uses NO NAILS or similar adhesives, just one or two spots on the back of the detector - especially useful for wireless sensors (on aluminium frames) - is enough. Hold detector/device in place with tape for about 20 minutes and the job is done. If you have applied too much it can be trimmed off with a craft knife when set. Same technique can be used on other surfaces which are not flaking or greasy.