R/H and condensation

[luv2fly]

Naphalm for sure. 

[Fugu]

yeebus - how has this one gone astray.....

[CaptainQuintero]

On 10/10/2016 at 6:03 PM, PigFish said:

Do you sleep with the door closed in your bedroom? (at night)

Do you have a 'formal' master bedroom? Meaning is there a 'mater bathroom' attached?

My guess is that you might answer yes to both. Well, this is the problem!

Is there a vent fan in the bath? If yes, use it! People often close up their bath to keep the heat in when bathing, then keep all the moist air in by closing the door when they leave. My wife is famous for closing the bathroom doors. We have hoses and live on a 'dirt lot' and get a lot of dust. So she does this believing that this will halt the dust. Frankly, you should consider keeping that door open after showering/bathing, and then the bedroom door, while you are not in the room in order to diffuse the water.

Bathrooms are a main cause of interior water vapor. As you begin to close up a home for winter, the home may go over wet until the outside world gets cold and freezes at which point the outside air exchanges begin to offset this problem... If this time of year it is damp and cold, verses cold and dry, the combination of air exchanges and internally supplied water vapor is simply greater than the room can bear. Again, I am guessing, but I would say that you have an attached bath and close up rooms.

Best of luck on the problem. -Piggy

I think (hesitantly) I may have a grasp on the situation. No on suite bathroom but the main one is nearby, but whenever we shower or bath we keep the door shut and the extractor fan going until all the steam has cleared, usually the window in there is opened a crack also to help this.

I did keep the bedroom door shut all night so that may have been the issue. It's been open this past few nights and the issue seems to be not appearing anymore, even first thing in the morning.

There has been heavy frost on the ground the past few mornings which may point to your comment about the air temperature dropping significantly.

Temp-Rh looks to be around 19c and 60%

Which still sounds high to me but there is no damp in the house, and the air all feels fresh and dry. The hygrometer is my 9 year old calibre though, the swing is usually around 8% out on a good day with that geriatric