Featherplast Cement PT400W

FeatherPlast Cement PT400W is a lightweight, thermally insulating rendering and plastering mortar used as a base coat for interior or exterior application on brick, aerated cement block, cement board and gypsum board.


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How does FeatherPlast Cement PT400W work:

Applied as a base coat, the fine closed cellular structure of FeatherPlast Cement PT400W prevents interaction with water and subsequent loss of thermal properties.

Key Features & Benefits

  • Thermally Insulating
  • Lightweight – does not crack
  • Water repelling
  • Highly breathable
  • Excellent adhesion
  • Sound absorbent
  • Fire Retardant
  • Ready to use

Specification Tip for Design Professionals:

FeatherPlast Cement PT400W may be specified by name or by using the following description: a ready to use. Lightweight, thermally insulating rendering and plastering mortar base coat for interior and exterior applications.

Test Results:

  • Thermal conductivity (ISO EN 1745:2002): λ10, dry =0.048±0.004 W/(mK).
  • Mechanical strength (ISO EN 1015-11:2007): Compressive strength: 4,8 N/mm2 @ 28days – Category CS II, Flexural strength: 1,6 N/mm2 @ 28days
  • Adhesion (ISO EN 1015-12:2015): >1,2 Ν/mm2 – FPB
  • Water absorption (ISO EN 1015-18:2003): 0,1 kg/(m2min0.5) – Category W2
  • Water vapour permeability (ISO EN 1015-19:2005): μ11
  • Reaction to fire (ISO EN 13501-1:2007): Class: Α2-s1, d0


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