What are these patches in the sealing membrane (floor slab)?

2020-02-20 17:08:38

Hello dear forum community,

I recently discovered these patches on the sealing membrane of my shell construction.
Can someone tell me what they are about?

Thank you.

2020-02-20 18:12:45

I would have spontaneously said that the KG pipe connections of your sewage pipe are located down there and lead from there under the floor slab and then out. This means the patches will be removed later. For that, the connections would of course be quite randomly distributed on the floor...

2020-02-20 23:13:39

no, that's not the case. Obviously, the waterproofing membrane had holes at that spot (caused by construction materials, ladders, or whatever) and the contractor repaired exactly those spots with "patches." A common procedure and shows that the contractor is diligent. Pipes continue to protrude and remain visible.

2020-02-21 10:00:45

no, that's not the case. Obviously, the waterproofing membrane had holes at that spot (caused by construction materials, ladders, or whatever) and the contractor repaired exactly those spots with "patches." A common procedure and it shows that the contractor is conscientious. Pipes continue to protrude and remain visible.

I find your posts informative ....what do you do for a living, if I may ask.

2020-02-21 20:58:15

: I was thinking something along those lines too. That could also fit, since there were many supports in the basement. Thank you all.

2020-02-21 20:59:30

Well, then we have the cause as well!

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What are these patches in the sealing membrane (floor slab)?

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