On Aug 4, 8:54*am, Yong Huang wrote:
I have 4 rooms all upstairs. Below 3 are all indoors like living room,
etc. They're cool. One is above outdoor driveway. It's noticeably
warmer. I can't think of any explanation. One day I used a thermometer
to measure floor temperature. It was between 1 and 2 degrees higher
than the floors of the other 3 rooms.

My God, are people really this dumb?

Sun heats the driveway. Driveway radiates heat into floor of upstairs
room. Floor in upstairs room is poorly insulated, if insulated at all.
Floor of upstairs room is warmer.

You need more insulation in the floor of this room, or just live with
it. One or two degrees is hardly what I would consider "warmer." Cheap
thermometers have wider variances than that.