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Alltek Spray Etanch’R


Alltek Spray Etanch’R is a semi-lightweight ready mixed plaster, for ensuring the airtightness of large structures. Application by spraying helps fulfil the airtightness requirements complementing the performance of internal or external thermal insulation.


  • Semi-lightweight interior plaster for walls and ceilings for conventional application, airless or manual.
  • Alltek Spray Etanch’R can be used as an air sealing coating or as finishing coat.
  • Can be used in rooms of classes EA, EB and EB+ private rooms (see CSTB specification 3567-May 2006).
Typical spreadability 4.2 kg/m² with a coating thickness of 3mm
Recommended thicknesses
  • Min. thickness: 1 mm
  • Max. thickness: 5 mm
  • 15 litre plastic bag
  • 15 litre plastic bucket
  • 112 litre conical drums



Typical Spreadability

4.2 kg/m² with a coating thickness of 3mm


1,4 +/- 0,1 kg/l

Solid Content

  • Solid content by mass: 69%
  • Solid content by volume: 57%

Application conditions

  • +8°C to +35°C
  • Max. relative humidity 70%


8 +/- 1

Cleaning tools

With water


  • 5 days for bonded application.
  • 48h for application on metal substructure.
  • These specifications may vary depending on the application thickness, temperature, ventilation, humidity and substrate type.
  • For use as a finish, wait for complete drying before sanding and applying fresh coat.

Recommended thicknesses

  • Min. thickness: 1 mm
  • Max. thickness: 5 mm


  • Maximum handling comfort due to its semi-lightweight formulation.
  • Rapid application
  • Good adhesive properties
  • Fire rating: A2-s1, d0 as per European standard EN 13501-1.
  • Adhesion: greater than 1.1N/mm²
  • Thermal conductivity: 0.3 W/mK
  • Classification: Group III class 2 as per AFNOR NF T 36-005, compliant with the standards AFNOR NF T 30-608 and EN NF 15824.
  • DTA (technical test datasheet) 9/15-1006 of 28 October 2015, issued by the CSTB (French Building Standards Authority), Technical Approvals Committee. Period of validity: 31 March 2018.


  • 15 litre plastic bag
  • 15 litre plastic bucket
  • 112 litre conical drums


  • VOC content: < 1 g/l.
  • Indoor Air Emission Class



  • Terracotta blocks (according to standard NF EN 771-1)
  • Concrete blocks (according to standard NF EN 771-3)
  • Aerated concrete (according to standard NF EN 771-4)

Preparation of substrate:

  • The substrates, preparatory work and application conditions must be compliant with applicable building trade regulations (e.g. DTU) and standards.
  • Previous repair of spalling.

Application tips:

  • Stir before use if necessary.
  • Xtrem 60 pump system with 112 L drums.
  • Standard screw pump. Nozzles 4 to 6 mm.
  • High pressure screw pump. Nozzles .045 to .055.
  • Airless pump with spray gun. Nozzles .035 to .041 depending on material used (contact supplier).
  • Manually with spatula/knife of suitable width.
  • Apply in one regular and uniform layer about 3 mm thick when wet.
  • Seal wall/ceiling junctions with self-adhesive jointing tape and wall/woodwork junctions with the Alltek tape + Etanch’R.

For more information, see DTA 9/15-1006.


  • Ensure adequate ventilation to remove excess moisture and accelerate drying.


The safety information sheet is available from: www.icp-alltek.com/en-gb/documentation/