This may be of interest.
https://www.preferencefloors.com.au/wp-content/uploads/documents/elkfalls-installation.pdf
The product has a purpose designed locking edge. The manufacturer advises the product does not require gluing and should not be attached to the subfloor.
The timber flooring requires a PE water resistant membrane between the sub-floor and engineered timber planks.
The manual/guide provides further details of important and critical requirements for a reliable installation. I’ll not comment further on the technical requirements.
