ᐅ Proper Ventilation for an Interior Bathroom

Hello,

a practical question for you all. I hope this is the right forum section for it? If not, please feel free to move it, thanks.

We have an interior bathroom, so without a window. There is a ventilation fan that always turns on when the skylight is switched on. After bathing or showering, I sometimes feel the ventilation time is too short if I don’t leave the skylight on longer. Are there any guidelines that might help balance room size, duration, and humidity?

Best regards, Gerda

Hello Gerda,

I want to reply to you here because you helped me so much with the café curtains.
My sister also has a bathroom without a window.
She keeps the ceiling light on a bit longer when the room gets very humid from bathing or showering.
She uses an energy-saving bulb to reduce electricity consumption.
Personally, I always think a window is better.

Marie

Yes, I find these interior bathrooms terrible, as there is no real way to remove moisture from the rooms, especially in a wet room. What the architects were thinking here is beyond me 🙁 because these fans that turn on when you switch on the light are not always very effective, plus the additional electricity consumption.

I can confirm that.
Electricity consumption should not be underestimated.
When you have children and the bath runs for one or two hours, the fan and the light are always on.
That adds up over the month.
Nowadays, I would always try to have a bathroom with a window, and in my opinion, the house should be planned accordingly.
Since you probably have it as it is now, maybe you can keep the door open more often and ventilate and heat the adjacent room?

Hmm, leaving the door open probably isn't a good idea. For one, it allows more humidity to enter the other rooms, and another reason is that if you ever have a bad smell, hmm, it's probably not great for that smell to spread throughout the entire apartment 🙂

Thanks for all the responses.
Yes, a bathroom without a window isn’t ideal, but what can I do 🙂
The issue with the adjacent room is also tricky, as it would be the hallway, which also has no window.
Otherwise, of course, we’ll open all the windows and room doors so fresh air can get everywhere sometimes.
But apparently, no one seems to know about values that depend on room size or something like that?

Best regards, Gerda