Best way to raise existing screed height/depth

[Newbuild]

Ouch. No other solution i guess.
Thanks

 

[Ajax123]

This could be another option

Knauf Brio Dry Floor Screed System | Backer Boards, External Boards & Flooring Boards | Dry Lining & Partitioning | Insulation Products | Sheffield Insulations

 

[Diamond Pool Finishers]

or try here Screeds - new screed, polymer screeds, rapid drying screeds they have some great products that would suit your needs as well

 

[Newbuild]

Thank you