Suitable moisture barrier film for screed insulation

My wife and I are building a single-family house on our own. So far everything has gone quite well because we have skilled craftsmen and always inform ourselves carefully. Our basement (completely WU) is partly to be used as a hobby cellar and therefore will have underfloor heating. The energy consultant recommends a 10-centimeter thick insulation of the floor slab, on which the underfloor heating and screed are to be installed. We want to do the insulation below the screed ourselves. Planned are edge insulation strips and foil patches. Our screed specialist wants us to apply an additional moisture barrier foil under the insulation. We were thinking of "Katja," a product for cold bonding. What do you think about it? Is it suitable for this purpose?

According to Knauf, the "Katja Sprint" would probably be suitable. In case of doubt, call Knauf.ch and describe the planned intended use.

I can only confirm that and we have also purchased it from knauf.ch. This sealing membrane is coated with photovoltaics on both sides. It is self-adhesive and easy to work with.

I inquired at Knauf and they also recommended "Katja Sprint" to me. These sealing membranes are easy to work with and everything went relatively quickly.

The "Katja Sprint" is a very good foil and can be laid quickly. So it is recommended.

Hello,

Thank you for the hint and I will deal with this foil. Next month we will lay a new screed and we are looking for such a foil for this.