Manufacturer KMB, wet layer thickness, soil moisture

  • Erstellt am 2012-07-08 15:48:40

wadi1982

2012-07-08 15:48:40
  • #1
Hello.

We want to waterproof our precast concrete basement of the new building.

According to the soil report, installing a drainage system is sufficient for waterproofing against ground moisture / non-accumulating seepage water.

Our plan is as follows:

- Grind the basement, break the edge of the floor slab and sweep off
- Brush the joint between the floor slab / walls with sealing slurry and immediately create a fillet of cement mortar "fresh in fresh."
- When the fillet is dry, prime with a bitumen primer and let dry.

We want to build the actual waterproofing in 2 layers of single-component liquid waterproofing membrane (1-K KMB) with reinforcement fleece in between.

And until yesterday, (I thought) everything was clear to me.

The manufacturer of the waterproofing membrane prescribes a wet layer thickness of 3.7 mm. So let's simply assume 4 mm.

So apply 2 mm and press the fleece into the still fresh layer.
Let it set and apply another 2 mm on top -> 4 mm wet layer thickness.

Now yesterday I came across an article on the topic of KMB where it says that in our case a wet layer thickness of 4 mm per layer is required.

How should this now be understood? Do we really have to apply 2 x 4 mm if we do 2 layers with fleece in between? Just from a feeling, that's (after all 8 mm) quite thick, isn't it?

How thick should the total structure of the KMB be now?

For the sake of completeness: After the KMB has dried, 100mm Styrofoam boards will be glued on with a two-component KMB. After that, the 4 light shafts will be installed and then a studded membrane as backfill protection.

Thanks in advance
 

Similar topics
21.10.2011Floor slab insulation "Yes!" or "No!"14
11.10.2017Sealing on Styrodur insulation?14
13.09.2016Insulation under the floor slab EPS or XPS?12
11.11.2017Sealing terrace exit / door in double-shell masonry10
22.07.2017Horizontal sealing of the base slab24
04.09.2017Sealing the garage with a concrete floor?21
21.10.2017Sealing the base slab before the roof is installed19
02.09.2019Properly installing the dimple membrane, base sealing, drainage?15
14.10.2019Dampness in the basement on the floor slab and walls25
15.04.2019Missing sealing in bathrooms detected after 16 years.13
01.07.2019KFW 55 - Insulation under the floor slab37
12.07.2023Sealing of floor-to-ceiling windows from the outside74
20.01.2020Bitumen welding membrane on ground slab19
15.05.2021Sealing garden wall to neighbor10
06.07.2021Sealing of my clinker facade16
10.07.2021Is basement waterproofing available in the old building from 1971?12
15.07.2021Balcony slope and waterproofing costs12
24.04.2022Comparison of construction work description regarding the base slab17
17.01.2023Sealing transition between ground slab and wall to the soil15
23.06.2025Is the foundation slab and house protected against moisture with bubble foil? Experiences?33

Oben