Hello everyone!
I hope there are some experts here who can quickly tell me if this is okay or if something urgently needs to be changed. The plumber completed the rough installation last week. I have two questions regarding this.
1. The builder and I placed special emphasis on sealing the bottom layer (concrete slab) with bitumen. The plumber has now fastened all the pipes with hammer-set anchors, thus penetrating the waterproofing layer. The response was that this is standard practice and complies with regulations.
Is that correct? Does the anchor effectively re-establish the waterproofing layer (similar to a vapor barrier), or am I overthinking this? Or should it be handled differently?
2. The builder apparently set the kitchen drain connection too high, so the plumber had to drain both the dishwasher and sink together. I am concerned about the sink connection, which has a “trap” loop going around once. I worry this might cause clogging in the kitchen.
I asked why a T-joint wasn’t used instead, but the plumber said it’s not possible and that the trap is fine since only 45° bends or less were used.
If everything is really okay, that’s good. But I want to avoid any irreversible damage later on.
I would be very grateful if someone could briefly reassure me or let me know if I need to provide more details.
Thanks in advance and best regards
I hope there are some experts here who can quickly tell me if this is okay or if something urgently needs to be changed. The plumber completed the rough installation last week. I have two questions regarding this.
1. The builder and I placed special emphasis on sealing the bottom layer (concrete slab) with bitumen. The plumber has now fastened all the pipes with hammer-set anchors, thus penetrating the waterproofing layer. The response was that this is standard practice and complies with regulations.
Is that correct? Does the anchor effectively re-establish the waterproofing layer (similar to a vapor barrier), or am I overthinking this? Or should it be handled differently?
2. The builder apparently set the kitchen drain connection too high, so the plumber had to drain both the dishwasher and sink together. I am concerned about the sink connection, which has a “trap” loop going around once. I worry this might cause clogging in the kitchen.
I asked why a T-joint wasn’t used instead, but the plumber said it’s not possible and that the trap is fine since only 45° bends or less were used.
If everything is really okay, that’s good. But I want to avoid any irreversible damage later on.
I would be very grateful if someone could briefly reassure me or let me know if I need to provide more details.
Thanks in advance and best regards
No, you don’t have to.
The waterproofing membrane on the slab is just a vapor barrier for moisture in the concrete. On top of that is water-resistant insulation, and usually, the heated screed is placed over it.
Even if there are holes and some diffusion occurs, it is completely harmless.
The waterproofing membrane on the slab is just a vapor barrier for moisture in the concrete. On top of that is water-resistant insulation, and usually, the heated screed is placed over it.
Even if there are holes and some diffusion occurs, it is completely harmless.