CERESIT CT 85 FLEX

  • Resistant to mechanical impacts, hairlines and cracks
  • Flexible
  • High adhesion to mineral substrates and EPS-boards

Features and benefits

For fixing Expanded Polystyrene (EPS) boards as well as for applying a thin armoured layer for thermal insulation of buildings by means of light wet method.

Properties

Description

CERESIT® CT 85 mortar is designed to warm up external walls of the buildings with the application of a light-wet method and EPS-boards. It is an element of ETICS within CERESIT Ceretherm. CT 85 mortar is used for fixing EPS-boards as well as applying the armoured protection layer to insulate the newly erected objects and also the buildings to be thermo-renovated. CT 85 increases the resistance of insulation system on damage and resistance to the formation of cracks and hairlines. Available pack size: 25 kg

Documents and downloads

How to use

CERESIT Tiling CE60 LP Instructions Illustration Step 1

CERESIT CT 85 SUBSTRATE PREPARATION

Fixing EPS-boards: CERESIT CT 85 shows good adhesion to carrying, compact and dry substrates. The adhesion to the existing plasters and paint coatings should be checked before starting the application. Armoured layer application: when CT 85 is set (after approx. 3 days), the boards should be ground with abrasive paper and additionally fixed with mechanical anchors.

CERESIT Tiling CE60 LP Instructions Illustration Step 2

APPLICATION OF CERESIT CT 85

CERESIT CT 85 should be poured into cool clean water and stirred until the homogeneous mass is obtained. Fixing EPS-boards: the mortar should be applied along the board edges and the board should be pressed to the wall. Reinforced layer application: the mortar should be spread along the surface of the EPS boards. The glass fibre mesh should be applied on the fresh mortar, and than smoothed the surface so that it is not be visible. 

CERESIT Tiling CE60 LP Instructions Illustration Step 3

IMPORTANT TO NOTE WHEN USING CERESIT CT 85

The armoured layer should not be applied on highly sunny surfaces and the applied layer should be protected against rain. Application should be performed in dry conditions with the substrate and ambient temperature ranging from +5 °C to +25 °C. Resistance to impact meets the requirements included in ETA for CERESIT Ceretherm system and depends on quality of application of armoured layer. 

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Frequently asked questions

CERESIT CT 85 mortar is an element of ETICS (External Thermal Insulation Composite Systems) within CERESIT Ceretherm. CT 85 mortar is used for fixing EPS and XPS-boards as well as applying the armoured protection layer to insulate the newly erected objects and also the buildings to be thermo-renovated.

CERESIT CT 85 can be applied on the surfaces of walls, plasters, mosaics and concretes free from grease, bitumen, dust and other substances decreasing adhesion.

CERESIT CT 85 is present in CERESIT SELF CLEAN System, SOLAR PROTECT System