ᐅ The roof window experiences heavy condensation, with a significant amount of moisture forming in the morning.
Created on: 24 Nov 2020 19:12
H
HabneFrage
In an older attic apartment, there is always the problem in winter that the skylight window sweats heavily overnight.
In the morning, the glass and frame are very wet.
This probably happens because the glass is cold while the room temperature is higher.
Room temperature is about 18°C (64°F).
The skylight window is additionally covered from the inside by a blackout roller blind. There is about 25 cm (10 inches) of air between the blind and the glass.
The room itself is small, about 6 m² (65 square feet).
Does the window sweat so much overnight because the blind separates the skylight glass from the room air?
Using blackout is necessary because otherwise, it would be too bright (street lighting).
Thank you very much.
In the morning, the glass and frame are very wet.
This probably happens because the glass is cold while the room temperature is higher.
Room temperature is about 18°C (64°F).
The skylight window is additionally covered from the inside by a blackout roller blind. There is about 25 cm (10 inches) of air between the blind and the glass.
The room itself is small, about 6 m² (65 square feet).
Does the window sweat so much overnight because the blind separates the skylight glass from the room air?
Using blackout is necessary because otherwise, it would be too bright (street lighting).
Thank you very much.
H
HabneFrage25 Nov 2020 11:56lastdrop schrieb:
Heat more. 18 degrees room temperature and frozen seals say it all...
And then ventilate as much as possible. Hello.
More than 18 degrees is not possible in this small bedroom.
One person alone heats the room to 20 degrees during the night.
And the air gets increasingly dry when heating above 18 degrees.
Already tried everything.
You also need to be able to sleep comfortably.
Ventilation is done regularly during the day with quick ventilation.
At night, the windows are closed in winter to avoid drafts!
H
HabneFrage25 Nov 2020 12:33So, I will try the following.
I will gently heat the glass edge from the inside overnight using a heating tape.
I plan to mount the heating tape on a polystyrene board all around and crosswise from the inside, then clamp it onto the glass (between the frame).
This way, the window should warm up slightly and will no longer freeze on the inside.
A temporary solution for this winter.
Let’s see if it works.
I will gently heat the glass edge from the inside overnight using a heating tape.
I plan to mount the heating tape on a polystyrene board all around and crosswise from the inside, then clamp it onto the glass (between the frame).
This way, the window should warm up slightly and will no longer freeze on the inside.
A temporary solution for this winter.
Let’s see if it works.
HausiKlausi29 Nov 2020 23:22HabneFrage schrieb:
This way, the window should warm up slightly and won’t freeze from the inside anymore.
A temporary solution for this winter.
Let’s see if it works. And after winter? In the end, all of these are just symptoms being treated, not the root cause (the window is poorly insulated). Why not invest some money and replace the window? Then you wouldn’t need to deal with heating tapes...
H
hampshire29 Nov 2020 23:31Sounds like winter in a camper van (box van). In the morning, the windshield behind the blinds is covered with condensation. Wiping it off solves the problem – the same applies to a house. If the window is beyond repair, replace it with one that has better insulation – as long as the dew point does not drop below the wall surface.
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