Hello everyone,
I have a question as well.
In our utility room, there is a small area about 5cm (2 inches) long in the corner between the exterior wall and the concrete ceiling where the white paint has suddenly turned dark and is slightly peeling. Behind it, there is a sticky black substance. If you scrape it a bit, it is malleable like bitumen/tar. Above this spot is the bathroom with the toilet cistern. My memory is a bit rusty after two years, but as far as I know, there were no bituminous membranes on the upper floor.
However, it’s possible that this was already present when the painting was done, and I may have painted over it without noticing. What surprises me is that it is now suddenly showing through as black and appears to have slightly spread.
Does anyone have an idea if bitumen/tar is commonly used for sealing in this situation, and if it is normal for it to become a bit soft again over time?
I have a question as well.
In our utility room, there is a small area about 5cm (2 inches) long in the corner between the exterior wall and the concrete ceiling where the white paint has suddenly turned dark and is slightly peeling. Behind it, there is a sticky black substance. If you scrape it a bit, it is malleable like bitumen/tar. Above this spot is the bathroom with the toilet cistern. My memory is a bit rusty after two years, but as far as I know, there were no bituminous membranes on the upper floor.
However, it’s possible that this was already present when the painting was done, and I may have painted over it without noticing. What surprises me is that it is now suddenly showing through as black and appears to have slightly spread.
Does anyone have an idea if bitumen/tar is commonly used for sealing in this situation, and if it is normal for it to become a bit soft again over time?
B
Bauexperte5 Jul 2016 13:43@Musketier
Do you recall if any soundproofing, such as roofing felt, was placed on the top row of bricks beneath the precast concrete slab?
Bauexperte
Do you recall if any soundproofing, such as roofing felt, was placed on the top row of bricks beneath the precast concrete slab?
Bauexperte
Martina, that was three years ago, so it's easy to forget some details. I'm not even sure if I actually noticed it while painting back then and just painted over it. Maybe it was slightly sticking out and I even cut it off at the time. After all, it was only the acoustic insulation.
I just checked the construction specification again but found nothing about sound decoupling.
While researching, I realized that we didn’t have a precast ribbed slab but rather a hollow-core precast concrete slab.
I'm realizing again that managing both a child and a house construction at the same time was somehow a bit too much.
I just checked the construction specification again but found nothing about sound decoupling.
While researching, I realized that we didn’t have a precast ribbed slab but rather a hollow-core precast concrete slab.
I'm realizing again that managing both a child and a house construction at the same time was somehow a bit too much.
B
Bauexperte5 Jul 2016 22:20Hollow core slab precast ceiling = prestressed hollow core slab?
Best regards, Bauexperte
Best regards, Bauexperte
B
Bieber08155 Jul 2016 23:33In our photos (you can never take too many ) I noticed that on the topmost stone and directly below the precast concrete slab there is a layer of roofing felt (bitumen membrane?). We built with calcium silicate bricks.
Bauexperte schrieb:
Hollow slab precast ceiling = prestressed hollow core slab?I think so.