Capacryl Haftprimer

Acrylic primer. Adhesion promoting, water-dilutable.
For exterior and interior use.

Field of Application

For adhesion promoting priming coats on existing paint coatings, enamel coats, wood, zinc/galvanised surfaces, unplasticized (rigid) PVC, aluminium, copper and many other problematical substrates before applying acrylic or alkyd resin enamels. Do not use alkyd resin enamels on zinc/galvanised surfaces.

Material Properties

  • Water-dilutable.
  • Ecologically compatible.
  • Excellent adhesive strength (grip).
  • Fast-drying.
  • Diffusion-capable.
  • Easy to sand.
  • Suitable for use on children toys as per DIN EN 71-3

Material Base / Vehicle

Acrylic dispersion/emulsion.

Packaging/Package Size

  • 375 ml:
    White (Weiß)
  • 750 ml, 2,5 l:
    White (Weiß), Red-Brown (Rotbraun), Silver Grey (Silbergrau) approx. RAL 7001,
    Black (Schwarz) approx. RAL 9005
  • 10 l:
    White (Weiß), Red-Brown (Rotbraun), Black (Schwarz) approx. RAL 9005


White (Weiß), Red-Brown (Rotbraun), Silver Grey (Silbergrau) approx. RAL 7001, Black (Schwarz) approx. RAL 9005.

Tintable in various colour shades via ColorExpress.

When applying colours with low opacity, such as Red, Orange or Yellow, it is advisable to apply one priming coat using the matching colour shade of our Priming System. Priming System colours are available for Capacryl Haftprimer via the ColorExpress tinting technique.

Gloss Level

Matt (flat)


Keep in a cool, but frost-free place.
Shelf life of original, tightly closed can/container: 24 months.


Approx. 1.5 g/cm³

Suitability according to Technical Information No. 606 Definition of Application Areas

Interior 1Interior 2Interior 3Exterior 1Exterior 2
(–) inapplicable / (○) of limited suitability / (+) suitable

Suitable Substrates

Wood, derived timber products, zinc/galvanised substrates, aluminium, copper, unplasticized (rigid) PVC, stable existing coatings. Do not apply on anodised aluminium.
The substrate must be clean, sound/stable, dry, and free from all substances that may prevent good adhesion.
Maximum permissible moisture content (WMC) in dimensionally stable wood: 13 %, in limited dimensionally stable wood and wooden parts of unstable shape: 15 %

Substrate Preparation

Wooden Parts:
Sand the surface in fibre direction, clean thoroughly, remove all seeping wood contents, e.g. wood resin/rosin and resin galls (resin/pitch pockets). Cut sharp edges (see BFS Data Sheet No. 18).

Zinc, Unplasticized (Rigid) PVC:
Wash with light ammonia solution using a sanding pad as per BFS Data Sheet No. 5 and No. 22.

Aluminium, Copper:
Clean with destined detergents, e.g. Gescha Multi-Star, then sand with a plastic abrasive fleece (see BFS Data Sheet No. 6).

Existing Paint Coatings:
Sand the surface of existing coats of paint and/or treat slightly with alkali. Remove unstable existing coatings.

Method of Application

Capacryl Haftprimer is ready for use and can be applied by brush, roller or spraying equipment. 
Stir well before use and dilute to a max. of 5 % with tap (potable) water, if necessary.

Guidelines for Spray Application:

Ø NozzleSpray PressureAir PressureDilution
Airless0,008 - 0,011 inch180 - 200 bar--
Airmix/Aircoat0,011 - 0,013 inch150 bar2 - 3 bar-
Low pressure1,8 - 2,2 mm-approx. 0,5 bar-
High pressure2,0 - 2,5 mm-2 - 3 bar-

Surface Coating System

SubstrateUseSubstrate PreparationImpregnationPrimingIntermediate CoatFinishing Coat
Dimensionally unstable
and limited stable
wooden parts
exteriorBFS No. 18Capacryl
Capacryl Haftprimer
Capacryl Holz-IsoGrund1)
Capadur Wetterschutzfarbe NQGCapadur Wetterschutzfarbe NQG3)
Wood(en) component partsinteriorsanding/
Capacryl Haftprimer
Capacryl Holz-IsoGrund1)
Capacryl PU-Vorlack
or Capacryl
Dimensionally stable wood(en) component partsexteriorBFS No. 18Capacryl
Capacryl Haftprimer
Capacryl Holz-IsoGrund1)
Capacryl PU-Vorlack
Capacryl PU-Gloss/PU-Satin
Zinc/galvanised surfacesinterior/exteriorBFS No. 5Capacryl Haftprimerif required
Capacryl PU-Vorlack
Capacryl PU-Gloss/PU-Satin
Aluminium/copperinterior/exteriorBFS No. 6Capacryl Haftprimer
Rigid PVCinterior/exteriorBFS No. 22Capacryl Haftprimer
Sound existing paint coating1)interior/exteriorsanding/
leaching (lixiviate slightly
2)Capacryl Haftprimer2)
Two intermediate coats are required on dimensionally stable wooden parts, according to BFS Data Sheet No. 18.
1)Always apply Capacryl Holz-IsoGrund on wood with water-soluble, discolouring substances of content, 2x for knots.
2)Pretreat defects in existing paint coatings according to substrate requirements.
3)Apply two finishing coats, if necessary (e.g. when yellowish or reddish colour shades with low opacity/covering power are used).
Note: Adhesion must be tested in advance for powder coatings, coil coatings and other problematical substrates by a trial coating.


Approx. 100 - 130 ml/m2 per coat.
Consumption is only a guide value and may vary, depending on substrate requirements. 
Determine the exact amount of material required by coating a test area on site.

Application Conditions

Lower Temperature Limit for Application and Drying:
+8 °C for product, substrate and ambient air.
Relative humidity must not exceed 70 %.

Drying/Drying Time

At 20 °C and 65 %
relative humidity
dust drydry to touchrecoatable with
acrylic enamels
recoatable with
alkyd resin enamels
after hours1 - 210 - 1212 - 1648

Lower temperatures, higher humidity and a higher film thickness extend the drying time.

Tool Cleaning

Clean immediately after use with water.

Special Risks (Hazard Note) / Safety Advice (Status as at Date of Publication)

If medical advice is needed, have product container or label at hand. Keep out of reach of children. Contains 1,2-benzisothiazol-3(2H)-one, mixture of: 5-chloro-2-methyl-4-isothiazolin-3-one [EC no. 247-500-7] and 2-methyl-2H-isothiazol-3-one [EC no. 220-239-6] (3:1). May produce an allergic reaction.


Materials and all related packaging must be disposed of in a safe way in accordance with the full requirements of the local authorities. Particular attention should be made to removing wastage from site in compliance with standard construction site procedures.
In Germany: Only completely empty containers should be handed in for recycling. Dispose cans/containers with residues of liquid product via waste collection point accepting old paints and enamels. Dispose dried/hardened product residues as construction site/demolition/municipal or domestic waste.

EU limit value for the VOC content

of this product (category A/i): 140 g/l (2010). This product contains max. 90 g/l VOC.

Product Code Paints and Enamels

M-LW01 (Germany)

Substances of Content - Declaration

Polyacrylate resin, titanium dioxide, coloured pigments, silicates, calcium carbonate, water, glycols, glycol ether, white spirit, additives, preservatives (methylisothiazolinone, benzisothiazolinone).

Customer Service Centre

Tel.: +49 6154 71-71710
Fax: +49 6154 71-71711

International Distribution: Please see

Product recommendation:

Capacryl Holzschutz-Grund

Capacryl PU-Satin

Capacryl Holz-IsoGrund

Capadur Wetterschutzfarbe NQG

Capacryl PU-Vorlack