Here you go @Lakey - direct from their website:
OrbryTM Boards are ideal for fixing floor tiles to timber, screed and
concrete floors. Fully waterproof, they can be used to create an
insulated tanked wall and floor system ideal for wet rooms.
When used with electric under floor heating systems,
OrbryTM
Boards will increase the efficiency of the system by reducing heat
loss to the surrounding environment, significantly reducing your
electrical consumption.
OrbryTM Boards are suitable for overlaying
with ceramic tiles or stone.*
TIMBER FLOORS
1. Fix and level any loose floor boards. Floors must be stiff with
minimum deflection under load.
2. Spread a coat of rapid-setting cement polymer modified fast
setting cement based adhesive onto the floor and lay the OrbryTM
Boards into the adhesive. Then mechanically fix with OrbryTM
Stainless Steel Screws and OrbryTM Backer Board Washers. (see
fig.1) Boards should be laid in a broken bond pattern.
3. When fixing to dry areas, apply
OrbryTM Self Adhesive Scrim
Tape to all horizontal and vertical joints using a thin layer of
cement based tile adhesive and a float trowel (see Fig.2).
When fixing over timber the minimum board thickness is 6mm.