ᐅ Recess in the screed, 5 cm deep – How is it done?

Bernd2378 schrieb:
But what if the washing machine is running, etc.?

That’s true. But how much water is actually in the washing machine that you would need a pump (there is a water stop valve in the supply hose, right)? A large amount of water can only come from a broken pipe. The same can happen in the bathroom or kitchen – but you don’t have a sump there. And if there is a major leak, so much water will flow that the pump won’t help much anyway.

So just do what everyone else does. Forget about the sump.

That's exactly right. No risk, no fun.

Hmm. Honestly, I don’t see the point of having a recessed area if there is no slope. We initially installed two floor drains in our laundry room and, of course, incorporated the necessary slope. This way, we can rinse out heavy dirt with a garden hose; naturally, we also use a squeegee afterwards.
My mother-in-law’s basement has flooded a few times for different reasons. But even there, it’s handled quite pragmatically since the water spreads fairly evenly – they just bring out the wet/dry vacuum to suck up the puddles. I don’t see any advantage to having a depression in the floor, where the water would first have to be pushed into.
I would skip the extra effort.

Fummelbrett schrieb:
To be honest, I also don’t see the point of such a basin if there is no slope.

Above all: in a 12-liter (3.17-gallon) basin – even if it would basically fulfill the noble idea in principle, it certainly would not in terms of size.

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Hello Bernd

get a 40mm (1.6 inch) Styrodur board from the building supplier, a long straight piece of metal (similar to a ruler), and a utility knife. Then cut out your measurement and give it to the screed installer, along with a 5 euro note. He will cut out the recess from the screed for you.

Steven