Full-surface nonwoven irrigation for roll turf

Yes, that's why we're looking for a water-saving system, and supposedly the honeycomb fleece saves 50-70% water.

You save water by choosing a nature-oriented planting that suits the soil and the climate.

Honestly, regardless of water consumption, a lawn really doesn’t make a garden beautiful. At best, it doesn't disturb. A varied planting with flowering shrubs at different levels, one or more enchanted paths, an extra seating area make a garden beautiful. Add a small kitchen garden for those who enjoy it. There you have a natural paradise. You find relaxation by observing and listening to nature. The lawn doesn’t offer much in that regard. That’s my opinion.

Garden magazines are a good source to look at really great gardens. No matter what size.

I am surprised by that. Most neighbors here had their gardens dry out one after another during the summer because no one kept up with watering, even though drought-resistant lawn mixtures were used. Partly roll-out turf, partly seeded lawn.
I spoke with a few people in the neighborhood; they water at least 3 times a week during the hot summer months when it doesn't rain.
Precisely because of the water savings, capillary irrigation is being considered.

Let me guess...mainly pasture grasses, 2-3 cm low, mowed every week (or even more often by a robot), heavily fertilized and in full sun? Also, a thin layer of topsoil spread directly on compacted soils? That won’t work, and then you’re constantly busy trying to keep things alive that nature never intended.
A lawn doesn’t have to look like a golf course. Take an herb lawn, let it grow taller, and only mow it when it’s really high. The roots go much deeper then, and it can also handle 3 weeks without rain. Don’t forget a few trees for shade. It also looks much nicer than a lifeless and labor-intensive grass desert.

A lawn doesn’t have to look like a golf course.

Well, for me it’s about the appearance. The lawn should also look nice in summer.

Apparently, for the OP it already is. Beautiful is relative, of course, but here they’re probably talking about the nicely green optimum.

I talked to a few people in the neighborhood who water at least 3 times a week in the hot summer months if it doesn’t rain.

I’m surprised that some users here say you don’t need to water your lawn at all?

We’re among those: normal lawn, eventually in summer it burns. Why do we allow that? Because we’ve changed our mindset. Water resources must not be wasted on us stupid garden lovers, that’s something one learned over the years.
The lawn recovers again. And by now we’re even proud to just let the lawn be lawn and take care of more important things in summer than the hunt for the nice green lawn, which steals valuable lifetime.

I don’t think much of these snippets on natural areas. Maybe potted plants, raised beds, or similar can benefit from that, but to bury something in nature that doesn’t decompose – I’m against that. I have committed some sins myself, but the important thing is to eventually get the hang of it. We already swallow enough microplastics from the plastic that remains in nature.
But I don’t want to lecture anyone. Everyone has the right to learn from their mistakes.

Sometimes I wonder how far people can distance themselves from nature that in the year 2024 they want to fight so hard against nature for a certain garden look.

Basically, with his words Schorsch says exactly what it is.

I see it the same way. For us, it’s like the OP, sandy soil that loses water within minutes. In summer, the lawn gets some from the cistern, but that’s about it. Burying plastic in the ground would never occur to me. And regional bans on lawn watering will certainly not decrease.

In public spaces and forestry, they are looking at how to "restructure" green and forest areas and adapt them to the changed climate. Maybe that’s something one can also work towards in private.

Apparently for the OP it is. Beautiful is relative, of course, but here it is probably the beautiful green optimum being talked about.

It is spoken of as "beautiful" without defining it more precisely. Usually such statements also reflect a lack of knowledge about the alternatives. The neighbor only has a green desert, while currently daisies and crocuses are sprouting in my garden. And soon all the other little flowers will follow. People are influenced by images in corresponding magazines, garden exhibitions, and city parks. Everywhere it looks like a golf course. However, the ideal of beauty is just as conditioned as the aggressive, pseudo-offroad-paneled cars that are currently in fashion. One should always ask oneself whether that really corresponds to what one wants oneself.

With sandy soil, you have to irrigate endlessly. You won't get far with 6 cubic meters on 400 sqm. The 6 cubic meters are enough for one watering. If you actually save so much through the fleece that you can water three times, you can get one to two weeks into the summer. With the net you mentioned, you still have to water, so it is only an addition to the classic irrigation system. The permanent net will eventually release a lot of microplastics into your garden. Maybe a soil improvement with bentonite can help to achieve a lasting higher water retention capacity – without inheriting a plastic problem.

To get and maintain a nice lush green lawn requires more than water. There is a lot of work involved. The irrigation system and robot only take on part of the work. Fertilizing – what, when, how much? Blades must be in good condition. Weed removal, etc.