Not for one side, we I have a wood burning stove to the right of my TV that has tile on the floor and walls for heat. The only thing I could think of is putting it under the carpet along the tack strip.
If you absolutely have to mount the surrounds in or to the ceiling, I'd look into ceiling (bracket) mounts:
Wall/ceiling speaker brackets
www.crutchfield.com
I have no experience with these particular mounts, it's just an example for purposes of discussion.
If the speakers have to be in-ceiling, I'd look into directional speakers:
This carbon fiber in-wall speaker is the perfect combination of performance and style. The use of carbon fiber for the woofer means that the speaker can hit harder, go lower, and handle more power wit
www.monoprice.com
I'm not recommending these particular speakers, but I have been fairly happy with the Monoprice speakers I've bought given the modest cost. I'm sure there are many other speakers with similar design. In the Q&A for the above, here's an answer posted in response to a question about using them as rear surrounds:
>>>I'm using them as my rear surrounds and they work great, though even at the minimum angle you have to make sure you have the right distance for them to focus properly on where you're sitting. I think mine aren't quite far back enough, so are focused slightly in front of my prime sitting location, but it hasn't been enough to be a distraction, and I think the angle is still much better than if I'd just had flat speakers in the wall behind me.<<<
Getting the speakers positioned far enough to the side (or rear for rear surrounds) seems to be the main challenge with this type of speaker.
Personally, I'd favor ceiling mounts with conventional bookshelf speakers. First, there are many decent budget bookshelf speakers to choose from and I strongly suspect you'd get better sound at any given price point with bookshelf speakers. Second, ceiling mounts will position the speakers lower so they do not have to be as far off to the sides at a given angle. And, of course, you can adjust the angle of the ceiling mounts to get the angle right even if you do have to mount them closer to the listening position.
These are just my initial thoughts. I have not tried directional ceiling speakers or ceiling mounts.