Webertherm Glue

Apply the Webertherm Glue mixture on the back side of the insulation board (Mineral wool such as webertherm SW or EPS). 
Apply the adhesive on the inside of the board using the “strip-point” method. 
It consists of preparation of continuous circumferential block (at least 3 cm wide) at the edge of the board and even distribution of 6 to 8 patches of 8 to 12 cm in diameter on the whole surface. 
Immediately after application of the mortar on the board, fix the board to the substrate by firm pressing and level it. 
In case of even and smooth substrates, the mortar can be evenly distributed using a notched float on the whole board surface to ensure 2 to 5 mm layer thickness. 

CAUTION: Immediately place the insulation board on the substrate, ensuring that no Webertherm glue mixture gets into board joints. 
Do not allow the Webertherm glue mixture to form a skin before positioning the insulation board on the substrate as it will affect the bond strength. 
Joints between adjacent insulation boards should be reduced to the minimum

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