Sealing transition between ground slab and wall to the soil

  • Erstellt am 2022-08-01 22:28:20

Kili1987

2022-08-01 22:28:20
  • #1
Hello team,

we are just starting with the external earthworks and currently have the following setup. Our entire house is covered on the outside with ETICS. The base slab is coated with a waterproof slurry and the transition from the base slab to the insulation underneath is additionally sealed with a fillet. We will be piling up about 50 cm of soil and thus also go into the window sill at least with a terrace.

My question: Is it sufficient here to install a normal dimpled membrane from the top edge of the terrace down to the insulation (like an L) and then add soil?
I have read that with ETICS or bitumen, the dimples are rather placed outward and additionally a fleece is used on the dimpled membrane?

Opinions or recommendations specifically regarding the dimpled membrane?

Regards
Kili
 

Knautnaundorf

2022-08-01 22:44:25
  • #2
I would first fill the wall up to the edge of the floor insulation with Styrodur depending on the terrace covering and only then proceed with the l-shaped dimpled membrane.

The Styrodur about 3 cm below the window sill, so that the area from the floor slab insulation to the terrace wall is additionally insulated. Attach the Styrodur with spot adhesive so that some air can still get behind it. It is also walkable.

Then fill the rest in front of the dimpled membrane with gravel and lay the terrace slabs on top.
 

Kili1987

2022-08-02 09:47:34
  • #3
Thank you very much for your quick response. Maybe it doesn't come across well in the picture. But the entire facade including the base plate is already covered with ETICS down to the insulation of the base plate. That is why we also have the cove molding to seal and connect the transition from the ETICS wall at the bottom with the base plate insulation. Accordingly, everything is already completely insulated with Styrofoam. I actually just want to install a dimpled membrane on top of that now.

At least it sounds here as if a simple dimpled membrane with ETICS + bitumen is not sufficient:

"Under certain conditions, the dimples also face the soil, for example with perimeter insulation."

So would you take the dimpled membrane with a fleece layer and then lay the dimples facing the soil?
 

Aloha_Lars

2022-08-02 10:56:40
  • #4
If I understand the drawing correctly, the sealing slurry is afterwards below ground level. Can that really be the case or do I just not understand the picture correctly?
 

Kili1987

2022-08-02 14:50:32
  • #5
The first layer of sealing slurry was applied directly onto the masonry (under the ETICS) and is 3 rows of bricks high.
Then a reinforcement was applied onto the ETICS, followed by the base plaster - that should be the grey on the picture above.
Attached is a picture before the installation of the ETICS.
 

Kili1987

2022-08-02 20:43:28
  • #6
So specifically my question: Do I need such a dimpled membrane because of ETICS + bitumen layer, which I lay with the dimples facing outward towards the ground: is a very simple dimpled membrane with the dimples facing inward towards the wall sufficient?
 

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