Hello everyone,
I have a problem that is somewhat bothering us...
We recently moved into a rental apartment. Great location, great landlord, everything really excellent.
The bathroom was renovated 5 years ago, including a new window.
Now we noticed the following:
- There is always moisture on the silicone sealant on the bathroom window sill. Even if we wipe it away, it reappears a few hours later, although we always ventilate after showering or bathing.
- As a result, some black mold has developed there, which we cannot remove.
- Right in front of the window/window sill is the bathtub… when sitting in it, you can feel a “draft” at the back of the neck.
- Using Tesamoll to fix it didn’t help; the sealing lips are now tight, but the draft remains. Taping over the small openings also didn’t help.
According to the outdoor sensor of the weather station, the window sill is below 17°C (63°F) and the humidity is above 70% with the window closed and nobody having showered or bathed recently.
If the sensor is placed in the middle of the room, the temperature rises and the humidity drops. Don’t worry, I was just curious how far the sensor reaches 😉
The landlord wants to address the problem, which I feel uncomfortable about because it means the entire beautiful tile work might have to be removed if the insulation foam around the window frame isn’t sealed properly. I find the landlords (a couple) very likable and understanding, and he also feels awkward and quite frustrated about it :-/
Most importantly: what about warranty after 5 years? The seal seems tight, and the window as well… so is this just poor original workmanship that only becomes obvious now?
So... we need help to maybe check where the fault lies beforehand :-/
What should we do? What else I noticed: the bathroom (3 x 4 meters (10 x 13 feet)) is unusually cold in the morning (facing the weather side). There are no blinds or shutters to close… :-/
I would appreciate any tips.
Thank you in advance,
Regards,
Daenni
I have a problem that is somewhat bothering us...
We recently moved into a rental apartment. Great location, great landlord, everything really excellent.
The bathroom was renovated 5 years ago, including a new window.
Now we noticed the following:
- There is always moisture on the silicone sealant on the bathroom window sill. Even if we wipe it away, it reappears a few hours later, although we always ventilate after showering or bathing.
- As a result, some black mold has developed there, which we cannot remove.
- Right in front of the window/window sill is the bathtub… when sitting in it, you can feel a “draft” at the back of the neck.
- Using Tesamoll to fix it didn’t help; the sealing lips are now tight, but the draft remains. Taping over the small openings also didn’t help.
According to the outdoor sensor of the weather station, the window sill is below 17°C (63°F) and the humidity is above 70% with the window closed and nobody having showered or bathed recently.
If the sensor is placed in the middle of the room, the temperature rises and the humidity drops. Don’t worry, I was just curious how far the sensor reaches 😉
The landlord wants to address the problem, which I feel uncomfortable about because it means the entire beautiful tile work might have to be removed if the insulation foam around the window frame isn’t sealed properly. I find the landlords (a couple) very likable and understanding, and he also feels awkward and quite frustrated about it :-/
Most importantly: what about warranty after 5 years? The seal seems tight, and the window as well… so is this just poor original workmanship that only becomes obvious now?
So... we need help to maybe check where the fault lies beforehand :-/
What should we do? What else I noticed: the bathroom (3 x 4 meters (10 x 13 feet)) is unusually cold in the morning (facing the weather side). There are no blinds or shutters to close… :-/
I would appreciate any tips.
Thank you in advance,
Regards,
Daenni
Well, I would definitely monitor this more closely… or the landlord should (after all, it is in their interest since they paid for it and therefore have the right to proper workmanship) and also remove the interior surface… it wouldn’t make a difference for just a few tiles. Besides, they can be carefully separated so that no damage occurs to the rest of the wall.
If the wall was insulated on the outside, that is already positive… but then it is even more incomprehensible that this very important detail was apparently overlooked.
Unfortunately, in daily practice, I often encounter such cases… where a homeowner shows good will and has everything renovated… and in the end, the contractors or even the supervising professionals do a poor job. The latter usually because they are not present on site to inspect or they plan inadequately.
The planning and ultimately execution errors often start with retaining possibly old exterior window sills, which are known to be thermal bridges… When insulating a facade, these old elements are usually among the first to be removed…!
So, good luck with the implementation!
If the wall was insulated on the outside, that is already positive… but then it is even more incomprehensible that this very important detail was apparently overlooked.
Unfortunately, in daily practice, I often encounter such cases… where a homeowner shows good will and has everything renovated… and in the end, the contractors or even the supervising professionals do a poor job. The latter usually because they are not present on site to inspect or they plan inadequately.
The planning and ultimately execution errors often start with retaining possibly old exterior window sills, which are known to be thermal bridges… When insulating a facade, these old elements are usually among the first to be removed…!
So, good luck with the implementation!
Thank you for the explanation, we will probably have to address this issue now. Last night, I inspected the spots on the ceiling... it looks like we will have to wallpaper. Unfortunately, we skipped the bathroom during the move-in because it still looked quite good, even though we had marked one ceiling corner as "dark."
We were away from the apartment for about 1.5 days, and last night I wiped the windowsill dry (including the side panels)... there were about three clumps of crumpled toilet paper soaked through.
So the newly sealed silicone joints really paid off... 🙁
And black spots are already appearing in the grout lines of the wall tiles...
Well, we’ll see how it goes.
Many thanks to you all!
Daniel
We were away from the apartment for about 1.5 days, and last night I wiped the windowsill dry (including the side panels)... there were about three clumps of crumpled toilet paper soaked through.
So the newly sealed silicone joints really paid off... 🙁
And black spots are already appearing in the grout lines of the wall tiles...
Well, we’ll see how it goes.
Many thanks to you all!
Daniel
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