Siniat do not have any specific recommendations for waterproofing products/membrane manufacturers for use with the board.

Siniat advise that an appropriate cold-applied sealing methods such as butyl tapes or EPDM (by others) should be used to seal deflection or movement joints created in the board layer, or to infill panel edges to other materials (i.e. concrete). 

Most of the major waterproofing suppliers (for example: Arbo, Tremco Illbruck, ISOChemie, SIKA) will have compatible products for use with Weather Defence^TM and should be contacted for advice on compatibility, design and installation.