Full-surface nonwoven irrigation for roll turf

Hello everyone, we are currently dealing with the irrigation of our garden. We live in an area with sandy soil, so the soil is very permeable and we are planning 400sqm of sod. We have a 6cbm cistern and suspect that it will not be sufficient for irrigation during prolonged drought periods if we plan a "conventional" irrigation system with pop-up sprinklers. We have a quote for this and generally, the material is rather affordable. However, we were advised at a garden shop to use fleece irrigation. In this method, a honeycomb fleece is laid down and then a drip hose wrapped in fleece, similar to underfloor heating, is laid on top. However, this type of irrigation really costs 5 times as much. Unfortunately, our budget does not allow for this but the concept is of course great. Therefore, I have considered copying the whole thing. For this, I have found water-retaining fleece. Does anyone have experience with something like this?

You do realize that you will never be allowed to dig a hole in your lawn again? For a tree, a garden shed, a flower bed, a...

You do realize that you will never be allowed to dig a hole in your lawn again? For a tree, a garden shed, a flower bed, a...

I am aware of that. Only lawn is planned for this area. Flower beds, hedges, garden shed, etc. are planned elsewhere.

Through the fleece, you have a barrier layer in the soil. Accordingly, nothing can grow deeper than the fleece, and you will get a lawn that will never be viable with natural precipitation and must always (!) be watered. If you really want that and want to have it forever in the future, using the fleece is certainly something to consider, as watering occurs directly in the soil and you have no evaporation.

What does "lawn that never becomes viable with natural precipitation and always (!) needs to be watered" mean in this case? I have now assumed that you always have to water your lawn with overhead irrigation, especially in the summer months, if it is to look nice. Where the fleece is planned, there is really only pure lawn area, so no other deep-rooted plants would be placed there.

Or instead of wasting a lot of water, simply consider a dry lawn. One that also tolerates prolonged heat / direct sun well and only needs to be watered occasionally – then this gimmick with fleece is unnecessary and you can always do something with the garden design.

Better to create sensible foundations than later (as planned here) to cover up the mistakes of good planning expensively with a lot of fuss.