Unfortunately, I didn't give too much thought at the time but we didn't reroute a 2nd floor heating vent. It's right behind the toilet.....no biggie, the upstairs is mostly unused. I'll plan better next time.
But the house has oil heat with a serious furnace. Last night walked upstairs while it was on and the area around the vent was really hot....below, above, around the vent. Behind the tile is green 1/2 drywall.
Should I be concerned about any affects on the drywall because of the heat? (or surrounding areas)