Siniat Plasterboards must be installed with the printed side against the substrate The back of all plasterboards will have printed text detailing product manufacture data and board type. his must not be visible after installation. 

For tapered edge boards, the taper is front face only and so can only be jointed on that side in order to minimise the crown of a joint. 

Siniat Vapourcheck grade boards have a foil face on the back of the board - this is the back side and must be installed against the framing substrate. 

SIniat Thermal boards have the insulant on the back side which is installed against the substrate.

Siniat Creason range (perforated boards) have a fleece liner on the back side of the board which is installed to the supporting frame.