Is the foundation slab and house protected against moisture with bubble foil? Experiences?

The right membrane for this purpose is the mentioned Delta Terraxx with fleece, with the fleece facing outward. Due to the flat and even application of the smooth side on the facade

A brief correction. This is a studded membrane, whose application is in basement construction, flat roofs, greened surfaces, car-trafficable areas, etc. Furthermore, and this is the strength of the product, it is to be used as a drainage system in connection with a drainage pipe (DIN Schlagmichtot) or as a water-conducting layer in various horizontal applications. That is why it also includes fleece.
For pure mechanical protection, it is the wrong product (although it works, it is like a platinum gold faucet – nice, but useless).

If the black membrane is mistakenly used for building protection on sealed facades, the studs can press into the (soft) sealing or the ETICS. Due to settlement movements of the soil, the sealing or the ETICS is pulled downward and torn off. Moisture penetrates into the resulting cracks.

Fortunately, this only concerns a few centimeters at the base slab here, and no ETICS is present.

But in general, your statements are correct, just not related to the specific case of the original poster.

Hello,

Delta Terraxx is of course just an example; there are also alternative products. I have good experience with the product, the seams can even be glued onto the prefabricated adhesive tabs, and the fleece is hardly damaged. Additional drainage at the facade is also provided.

In the above case, there is no full-surface ETICS, but a soft sealing on a soft substrate in the base area (slurry on bitumen on EPS). This can theoretically also be damaged, see example photos. Therefore, my clear recommendation here as well is for a two- or three-layer membrane with appropriate compression release (many studs, thick plastic). The costs are higher, but it should not come down to a few hundred euros when it comes to functional safety. I would not use the black membrane from the first photos in the topic.


Sources: Google search (Erdell and DEGA Garten-Landschaftsbau)

Best regards

In the above case, there is no full-surface ETICS, but a soft sealing on a soft substrate in the base area (slurry on bitumen on EPS)

I agree on the soft substrate. But down there, pressure-resistant XPS must be used. EPS has no place there (green also certainly indicates XPS). And yes, films with a slip layer and fleece are better. But – again, the OP provides nothing here – of course, the occurrence of load water at the house must be considered. Drainage yes or no, any pressing or standing water, etc. And also the "concern" about the KMB as a totally wrong product (KMB and slurry are not wrong) has firmly taken hold with the OP. Without reason. And whether the window was sealed is also up in the air. In the end, I don’t want to argue about whether I take a simple foil with studs towards the wall or a drainage foil with studs away from the wall (or even the simple foil with studs away from the wall and fleece in front). With just a few centimeters, the price hardly matters. But that is only a small part of the "problem" being considered.

So honestly, the expert was just scaremongering against the developer,

Thank you for the by far best joke I have read here in currently one hundred months of forum membership! If your husband contributed such own work as applying slurries, I don't believe it is a developer, then it will be a general contractor building the house for you. Your problem is not a technical one; apparently, the work was done correctly, but a mental and emotional one: the mental is your mistaken idea that the foundation slab must be sealed completely against moisture; and the emotional is your panic, which makes you deaf to being confirmed about correct work, and that you consequently even "lectured" the experienced respondents. You don't need to worry about your foundation slab; everything is fine there. However, as has already been told to you, the protection of the floor structure against penetrating moisture must not be neglected, and the critical points for this are the front door, terrace doors, and floor-to-ceiling windows, where the edge insulation must be sealed against the soil so that driving rain or heavy rain does not cause trouble here.

Hello everyone,

first of all, I need to get the information because I can’t remember. The expert will reply to me this evening. It’s not that I overlooked your questions and didn’t respond, but I don’t have the information. A bitumen coating and slurry were applied. Over the weekend, I had three craftsmen here who all told me different things, which made me a bit confused. As high as my fear was, it is not really like that in reality. I just sometimes couldn’t follow everything because I’m not an expert.

I don’t have a basement, bitumen coating and slurry were applied. That is definitely not enough. I believe that the builder should have at least put the dimpled membrane or sheet or whatever on there to protect the ground slab. So that nothing else has to be done on the outside of the house, so to speak. That it is part of building the house.

It would have been better if he had used bitumen sheet instead of coating, then it would be waterproof and dimpled membrane alone would be sufficient, but according to the forum here, slurry and bitumen coating are also enough. That is now the question, because I have heard different things here.

Since the dimpled membrane only serves as mechanical protection, it only makes sense if it is first properly sealed underneath, that would be with a bitumen sheet, slurry and bitumen coating are not enough.

I don’t want to find faults and definitely have problems with the house, please excuse me if I have difficulty understanding. Maybe someone can explain again what your opinion is on this. Is what I have now enough? And it just needs the dimpled membrane attached or do I have to waterproof it with bitumen sheet, then it’s sealed against moisture? I had companies here and then several who wrote to me privately, that’s why I was confused. Please also excuse the repeated questions, if anyone is annoyed by it, feel free not to reply, but I can do without personal attacks.

Regarding the window, nothing was done there either except bitumen layer and slurry. I didn’t know that something had to be done there as well.

Maybe someone can explain to me once again what your opinion on this is.

This request has so far only been fulfilled twice and three times.

then several who wrote to me privately,

This would not be possible at all here – hence the inquiry where else you are writing.

I can do without personal attacks.

There were none against you, and will content himself with responding to your lectures by refraining from helping you in the future. Hopefully, you won't also drive away .