Can I use these over popcorn ceiling?

I would say, no. I believe you would have tiles falling all the time and it wouldn't be worth your time or money. Either nail real tin tiles on, or have you thought of planking the ceiling? It is very popular now. Give these a look.

https://www.google.com/search?hl=en&tbm=isch&source=hp&biw=1295&bih=695&ei=OdVjW6v0M8So0gKEl6cw&q=planked+ceilings&oq=planked+ceilings&gs_l=img.3..0j0i5i30k1l2.1771.5920.0.6210.17.17.0.0.0.0.268.1953.1j6j5.12.0....0...1ac.1.64.img..5.12.1948.0..35i39k1j0i30k1j0i8i30k1j0i24k1.0.SdRIsm7Qtlo

No Doris, Never put anything peel and stick, directly on the work surface, especially a textured paint.

It will bubble and free itself.

Glue will not really assist this due to gravity.

If it was a textured floor, yes Gallons of glue assist creating a smooth surface.

With a celing however, you nit only get a dripping mess also Whilst Taking a nap, you end up with a tile on your head and a boo-boo.

Thus To detexture a popcorn ceiling you need to place a smooth and coarse surfaced masonite on the ceiling with the smooth side facing out at you.

You fasren using 2 inch or longer drywall screws to mount the masonite directly into the rafters through the popcorn ceiling.

Once you do that, you have effectively reduced texture on the ceiling and all you need to do is spackle and sand any of the joints that do not look level.

From there you can efficiently place the Peel and Stick directly onto the masonite, Smooth Side at you.

I know this works.

Styrofoam is not heat resistant Doris. Also, Styrofoam gets pitted and forms blisters.

For insights on how this seldom ages well in a humid greasy environment, next time you change the grease in your fryer, spend $1 at dollar tree for a pool noodle and also get a degreaser while you are there.

Pool Noodle, packaging peanuts, styrofoam ceiling, same difference...

Here's what you do with that pool noodle:

Place that pool noodle in a bucket, in a spiral shape, like you were making a Floatable Mini Cooler and Splotch some of that dirty grease from your fryer on it after you get it in the bucket.

After letting that grease on there for 3 days, paint over the grease.

After you let that paint dry, then use the degreaser to try to get out the grease that is seeping through your paint because it can't seep through the styrofoam.

After that, try to clean it with a healthy dose of Vinegar and Hot Water.

If you still after that Quality test like the appearance of Stale Grease, with Paint on Styrofoam, Get a styrofoam ceiling.

Whether you do like or not, at least know...

It is far better to waste $1 on a pool noodle [you can use somewhere else], to figure if you like something after it ages, and what detergents you can use to clean it, than waste $450 on 60 of those somethings, which turns out you do not like, but gotta keep looking at a mistake for 8 years until something better is in your budget.

When I checked on Amazon with those who have used them, they said that they had no problem, you should paint them before putting them up, and use finishing nails to secure them after gluing them up. I am presently thinking of only getting one box, painting them, gluing them, and tack them up with finishing nails above the stove. If after a month or so they still hold up, I'll purchase more. If they don't, I will take them off, and try something else. Over the stove will be my testing area. Although, I may put them up in my living room anyway, as they will not have the abuse they would have if they were over the stove. Thank you for sharing your ideas Dwp., and your cautioning. Another thing I was thinking of is paneling like this beadboard application, if it isn't very hard: