Does the builder want a bitumen coating on the finished plastered base?

  • Erstellt am 2018-02-02 21:47:56

305er

2018-02-02 21:47:56
  • #1
Hi, we are just about to hand over the house, and recently the site manager mentioned casually that we still have to apply a bitumen layer on our base, which is already plastered. And it should be as high as the earth will be backfilled.

The other site manager said only over/up to (?) the perimeter insulation.

But since you never see the guys and when you do, they are very short with you, it hasn't been properly explained to us so far how far we really have to do something.

Under the base plaster there is pink styrofoam, which in turn was glued on with bitumen (without any nasty sticky black stuff).

Do we really have to apply another bitumen coating now? Or is an insulating coating based on bitumen enough? Or maybe a flexible sealing slurry?

Everyone says something different -.-

There are way too many different types of bitumen. No idea what the right one is.

Attached is a screenshot from the contract regarding the sealing.

I also do not see anywhere else that anything else still has to be done by the builder.



Here you can see part of the base
 

Nordlys

2018-02-02 22:02:06
  • #2
I find that strange. So, with us, during the shell construction phase, they applied [Dichtschlämme] twice on the base and up to the height of the first Ytong row. Then this base plaster on top. Nothing more was done. That is supposed to be enough.
 

hemali2003

2018-02-03 11:22:53
  • #3
Our plasterers complied with it, although it would actually have been the builder's responsibility. They made it a bit tight, so we extended it by a few centimeters up to the future ground level (splash guard or paving). Then a dimpled membrane in front. This does not serve to protect the base (which has already received bitumen), but to protect the base plaster against moisture.
 

hemali2003

2018-02-03 11:25:03
  • #4
That would also not be necessary if no ground were to be built up. That’s probably why nothing is mentioned. However, with us it explicitly states that this has to be done by us.
 

Nordlys

2018-02-03 14:30:58
  • #5
Do you want topsoil right up to the house? You shouldn't do that. A drainage system belongs around the foundation, connected to the rainwater sewer. On top of that, fill sand and gravel or granite chippings or Rhine pebbles or whatever you prefer. That way the foundation stays dry. Karsten
 

hemali2003

2018-02-03 19:56:57
  • #6
Drainage in the splash protection strip is, in my opinion, not necessary - beneath it is the foundation cushion, which has sufficient drainage. But it certainly also depends on the height of the building above ground level and the water level...

But I don't see any foundation cushion in the picture at all? Or is that an illusion? It looks like soil.
 

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