Silicate/Silicone Plaster – 1.5mm or 2.0mm

Silicone-Silicate Plaster is a decorative thin-layer plaster for indoor and outdoor applications. It has a stone like structure, with a grain 1.5 mm or 2.0 mm.

Silicone-Silicate Plaster Ceresit CT 174 combines strengths of silicate plaster and silicone plaster. It is vapour permeable, with low water uptake and dirt resistant (Double Dry Technology). CT 174 is used for making thin-layer plasters in insulation systems, on concrete substrates, traditional plasters, gypsum substrates and chipboards, gypsum cardboards, etc.  We recommend the application of CT 174 as facade plaster within Ceresit Ceretherm ETICS (External Thermal Insulation Composite Systems) with the application of EPS-boards
(Expanded Polystyrene boards) and mineral wool. In case of intensive dark colours, the material application should be limited to small areas, e.g. architectural details. CT 174 is protected from biological contamination e.g. fungi, mould and algae (Bio Protect formula).

Related Downloads

icon-pdf  TDS Silicone – Silicate Plaster – 1.5 or 2.0mm

icon-pdf  SMET Renders and Plasters Product Selector

NBSplus NBS Specification Clause

Benefits of Silicone/Silicate Plaster – 1.5mm or 2.0mm

  • hydrophobic, resistant to dirt
  • vapour permeable
  • low water absorption
  • resistant to damage
  • highly resistant to weather conditions
  • BioProtect formula – resistant to fungi, algae, and mould
  • can be machine application
  • available in full palette of Ceresit Colours of Nature®

Technical Details for Silicone/Silicate Plaster – 1.5mm or 2.0mm

Packaging 25 kg plastic containers
Base Water dispersion of synthetic resins with mineral and pigment fillers
Density 1.8 kg/dm3
Application Temperature from +5 °C to +25 °C
Pot Life Approx. 15 mins
Resistant to rain After approx. 24 hours

CT 174 Grain 1.5 mm

CT 174 Grain 2.0 mm


approx. 2.5 kg/m2

from 3.1 to 3.4 kg/ m2

Impact resistance: cat I or II acc. ETAG 004
(depends on system)
Water vapour permeability:


Thermal conductivity:

V 1 acc EN 15824:2010

0.6 MPa acc. EN 15824:2010

0.61 W/(m*K) acc. EN 15824:2010

Water absorption:


Water absorption after 24 h:

W 3 acc. EN 15824:2010
w=0.05 [kg/m2h0.5]< 0.5 kg/m2 acc. ETAG 004
Fire classification acc. EN 13501-1: A2-s1;d0 in:
Ceresit Ceretherm Universal MW
B-s1, d0 in:
Universal EPS, Ceresit Ceretherm Popular, Ceresit Ceretherm Classic,
Ceresit Ceretherm Premium, Ceresit Ceretherm Wool Classic,
Ceresit Ceretherm Wool Premium
B-s2, d0 in:
Universal XPS, Ceresit Ceretherm Impactum

Available in 25kg plastic containers.

Shelf life/ Storage: Up to 12 months since the production date when stored on pallets in dry cool conditions and in original undamaged packages. Protect against frost! Protect against direct sunlight!

For other primersrender and plaster choice available from SMETSMET also have a wide range of skim coats and machine applied external renders in stock.  View SMET Bauprotec specification for Lidl render.