Screws in the ceiling?

Double sided sticky tape, that fat stuff that's impossible to remove once you stick it on.

But, if you use the exact same screws that hold it on now, you'll probably be OK. If you do have to get a new screw, don't get anything longer than what's currently there.

I'd do the double sided sticky fat tape myself.

Command strips worked for me. Put a few on there.

Heavy duty velcro.

There is ALWAYS 1/8 to 3/16 wood luan behind the Vinyl. Just use regular 1 inch wood screws. Doug

Sounds like I have at least three good options. Thanks to all who replied.

Our is mounted on a wall. Just checked because I wasn't positive, but best results are when mounted about 5 ft above the floor.

dougrainer wrote:
There is ALWAYS 1/8 to 3/16 wood luan behind the Vinyl. Just use regular 1 inch wood screws. Doug

Yep, and the screws wont let the weight of the detector separate the ceiling material from it's backing as you bounce down the road.

I am surprised that a CO detector would be on the ceiling. They are supposed to be down low, as CO sinks. Are you talking about a smoke detector ?

YES .. If you are really worried however I will design you a something

Take the OLD detector and lay it on a sheet of wood I'd go a bit thicker than quarter inch, perhaps 3/8.. Mark and cut out the circle.

Using the ORIGINAL screws and holes mount it,, then mount to it.

However you dont' need to do that

NOTE: Atwood detectors, the round ones, Really Kidie in disguise.

Yes, you can just use screws.