I posted earlier, i still can't figure out how water is getting into my floorboards. The floorboards get wet at the cracks, as if water were seeping along the tongue and groove channels, in an area about 3' by
2', and it seems to be associated with rain, though I'm not sure of that. The floor is above ground level but not by very much.However, there's a staircase going down to the basement between the part of the floor that's getting wet and the outside wall! So it's hard for water couldn't be coming from the outside wall.
There's an inside wall near that area, and the water heater vent runs up to the roof inside the wall. I thought maybe there's a roof leak near the water heater vent. But I just went up into the attic, right after a heavy thunderstorm, and felt around the vent, and everything is dry!
Also the roof vent seems to have a quite adequate cap on it.
So I just don't know. I can look up at the subflooring under that area and it isn't wet. The water heater vent is the only possible water source I can see near that area.
Can water come up from the water heater somehow??? It's an old water heater, is it possible there might be a lot of condensation in there or something?
I'm getting a digital camera, I guess I could post pictures. Of what I don't know.
Any ideas?
Laura