Adhesion promoter

Product description

Fescon Adhesion Promoter is a water-dilutable dispersion, it establishes good adhesion for the Fescon Waterproofing compound and Fescon levelling compounds. Additionally, it prevents bubble formation and prevents the water in the levelling compound from absorbing too fast in the base. For indoor use.

Certificate No. VTT-C-870-06.


  • Suitable adhesion promoter for the Fescon Waterproofing system.
  • Suitable for all levelling compounds
  • Improving the abrasion resistance of wall levelling compounds.


  • Hollow slabs, concrete floors cast on site, cement-based levelling compounds, floor gypsum boards, and uncoated wood-based construction boards.
  • Adhesion promoter for Fescon Waterproofing system.
The product is listed in the portal for building products that can be used in Nordic Swan Ecolabelled buildings.

Vinkki! Vieritä taulukkoa sivuttain
EAN code Product name Product number Package size
6416841259110 ADHESION PROMOTER 25911 1 l
6416841259103 ADHESION PROMOTER 25910 3 l
6416841259042 ADHESION PROMOTER 25904 10 l


Pretreatment of the base
  • Remove dirt, dust, cement paste and all loose material from the base.
  • Loose layers, cement paste, and other impurities have been mechanically removed to ensure adhesion.
  • The base must be sufficiently strong and immobile, and have a sufficient load-bearing capacity.
  • The temperature of the underlaying structure is > +10 °C and relative humidity < 95 % RH (under waterproofing < 90 % RH).
  • Concrete and cement-based levelling compounds: 1 part of primer and 3 parts of water
  • Bases that do not tolerate moisture, such as plaster of Paris, wood, chipboard and plasterboard: do not thin
  • Floors with old substances reducing adhesion: do not thin
Applying the primer
  • Fescon Adhesion promoter is applied as a thin, even layer by brushing. The Adhesion promoter must not stay as puddles.
  • Fescon Adhesion promoter must be dry before the floor levelling compound or waterproofing is applied (1 to 4 hours, depending on the conditions).
  • Highly absorbent surfaces (e.g. cast-in-place concrete floors) are primed twice.
  • If air bubbles form in the surface of the floor levelling compound, it usually indicates insufficient priming.
  • Wash tools and equipment with water immediately.
Waste handling

Storage and handling of waste. See the separate storage and disposal instructions

Technical information

Material usage

solid surfaces: approx. 10 m2/l
porous surfaces: approx. 6 m2/l
Gypsum boards and wooden surfaces (undiluted): approx. 7 m²/l.

Package size 1 l, 3 l, 10 l

Storage in a cool room, not below +6 °C, up to 2 years in a hermetically sealed original container.


1 l = 1 kg

Lowest usage temperature

+ 10°C

Drying time

1-4 h depending on the conditions

Thinner water
Method of application brushing
Transport Warm transport

The information is based on tests and practical experience. We cannot affect conditions at the work site so we cannot assume responsibility for the end result affected by local conditions.


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