This doesn't affect the room tile itself, but the construction that is on it will burn if it is directly beside a lava tile. I saw this happen when it was built on the same level, 1 & 2 tiles above the lava, so I think the distance above it is likely irrelevant. Only that is is beside some lava.
![[Image: 29fSx.jpg]](http://funkyimg.com/i/29fSx.jpg)