Hi jersey boy
There is a Knauf Aquapanel Exterior Joint Filler Gray compound and Knauf Aquapanel Exterior Tape 100mm that you usually order as part of the board order.....
If you don't have it and are moving onto the Parex Maite base coat and mesh layer soon, cut their mesh to 100mm strips and use the Maite into the joint gap and obto the board face to the 100mm tape width, to hold the 100mm mesh strips over the board joints.
Let this dry before you base coat and mesh the whole area.
Some just fill the board gaps with the Maite prior to the base coat and mesh layer (can be done wet on wet, but board joints will take a little longer to dry prior to finish coat)
Give me a shout to discuss if you want, or mail me
Richard Lord
Knauf
[email protected]
07918766577