Features and Benefits

For fixing Mineral Wool boards for thermal insulation of buildings by means of ETICS and for insulating ceilings of garages


  • high adhesion to mineral substrates and wool
  • vapour permeable
  • resistant to weather conditions
  • flexible
  • very good working parameters
  • possibility of machine application

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Ceresit CT 180 mortar is designed to warm up external walls of the buildings by application of external thermal insulation composite system using mineral wool façade boards as well as lamella. It is an element of Ceresit Ceretherm WM Classic and Ceresit Ceretherm WM Premium insulation systems. CT 180 mortar is used for fi xing of mineral wool façade boards to insulate the newly erected objects as well as the buildings to be thermo-renovated. In case of EPS-boards application used for insulating buildings, Ceresit CT 83 should be used.

Step By Step

Preparation of the adhesive mortar


CT 180 should be poured into the measured amount of cool clean water and stirred with the drill by means of a mixer until the homogenous mass is obtained without lumps.

Application of the mortar on the mineral wool boards


The ready mortar should be applied with a trowel along the board edges forming a strip of 3÷4 cm wide and a few spots with the diameter of approx. 8 cm. Then immediately, the board should be pressed to the wall with a few slight blows of a long float.

Fixing of the insulation boards


The mineral wool boards should be tightly fixed, moving from the bottom to the top.


When CT 180 is set (after approx. 3 days), the boards should be ground with abrasive paper and additionally fixed with mechanical anchors with steel cores Ceresit CT 335.