Capacryl PU-Vorlack

Water-dilutable, polyurethane-acrylic based priming varnish 
for wood and primed substrates. Excellent sanding properties. 
For exterior and interior use.

Field of Application

Undercoating varnish for filling intermediate coats with a good flow on dimensionally stable wooden parts, primed metals, filler-treated and sanded surfaces. Also suitable for adherent, stable existing coatings of paint and enamel before applying Capacryl PU-Gloss/Satin.

Material Properties

  • Water-dilutable.
  • Low odour.
  • Easy and elegant application.
  • High opacity (hiding/covering power).
  • Easy to sand, like an alkyd resin priming varnish.
  • Diffusion-capable.
  • Good filling properties.
  • Promotes the adhesion of subsequent finishing.
  • Fast-drying.
  • Suitable for children toys according to DIN EN 71-3.
  • Recoatable with water-dilutable (waterborne) acrylic and alkyd resin enamels and with solvent-based alkyd resin enamels.

Material Base / Vehicle

Polyurethane-acrylic dispersion (emulsion)

Packaging/Package Size

  • White:
    750 ml, 2,5 litres and 10 litres
  • ColorExpress:
    700 ml, 2,4 litres and 9,6 litres



Capacryl PU-Vorlack ist tintable via the ColorExpress (Capamix) tinting & mixing machine system.
When applying colours with low opacity, like Red, Orange or Yellow, it is advisable to apply one priming coat using the matching colour shade of our Priming System. Suitable Priming System colours are available via the ColorExpress tinting technique.

Gloss Level



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


Approx. 1.45 g/cm³

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

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

Suitable Substrates

Primed, dimensionally stable wood component parts, metals, and rigid/unplasticized PVC. Substrates must be clean, sound/stable, dry, and free from all substances that may prevent good adhesion. Maximum permissible wood moisture content (WMC) of dimensionally stable wood: 13 %.

Substrate Preparation

Roughening and cleaning the primered surface.

Method of Application

Capacryl PU-Vorlack can be applied with brush, roller or spraying equipment. Stir well before use and dilute with max. 5 % to 15 % of tap (potable) water, if necessary.
Use Orelmix brushes for brush application. For manual application on large areas use a short pile (textured) polyamide (nylon) roller and directly treat the surface with a fine-porous foam roller or Orelmix brush.

Tool size should match the size of surfaces to be treated, thus allowing efficient surface painting and uniform finishing (also see supplementary application information for PU enamel system).

Guidelines for Spray Application:
Ø NozzleSpray Pressure Air Pressure Dilution
Airless0,008 – 0,011 inch180 - 200 bar
Airmix/Aircoat0,011 – 0,015 inch120 bar2,5 bar
Low pressure1,8 – 2,2 mmapprox. 0,5 bar5 % – 15 %
High pressure2,0 – 2,5 mm2 – 3 bar5 % – 15 %

Surface Coating System

ImpregnationPriming CoatIntermediate
Finishing Coat
Wood, derived materialsinteriorsanding / cleaningCapacryl Holz-IsoGrund 1)2 x
Capacryl PU-Vorlack 2)
Wood, stable in dimensionsexteriorBFS Data Sheet No. 18CapacrylHolzschutz-GrundCapacryl Holz-IsoGrund 1)
Iron, steelinteriorderusting / cleaningCapalac AllGrund
exteriorderusting / cleaning2 x Capalac AllGrund
Zinc (galvanised substrates)interior/ exteriorBFS Data Sheet No. 5Capacryl Haftprimer
Aluminium / copperinterior/ exteriorBFS Data Sheet No. 6Capacryl Haftprimer
Rigid PVCinterior/ exteriorBFS Data Sheet No. 22Capacryl Haftprimer
Stable existing paint coatingsinterior/ exteriorsanding / treat with alkali(lixiviating)Prepare and prime defects according to the respective substrate
1) Always apply Capacryl Holz-IsoGrund on wood with water-soluble, discolouring wood ingredients (2 x on knots).
2) Intermediate coat, tinted to match the finishing coat in shade. For reddish, yellowish or orange shades with low opacity a suitable colour is mixed via ColorExpress. This colour slightly deviates from the selected colour providing for a better hiding power of the finishing coat.
3) Colour shades with low opacity (e.g. yellow/red/orange) may require an additional coat.

Note: Adhesion must be tested in advance for powder coatings, coil coatings and other critical/problematic substrates by trial application.


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

Application Conditions

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

Drying/Drying Time

At 20 °C, 65 % relative humidityDust DryRecoatable
Thoroughly Dry
Hours1 – 210 – 1248
Lower temperatures and higher humidity extend the drying time.

Tool Cleaning

Immediately after use with water.

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

May cause an allergic skin reaction. If medical advice is needed, have product container or label at hand. Keep out of reach of children. Do not get in eyes, on skin, or on clothing. Wear protective gloves/ eye protection. IF ON SKIN: Wash with plenty of soap and water. 
Contains: 1,2-benzisothiazol-3(2H)-one, 2-methyl-2H-isothiazol-3-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). mixture of: 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-2H-isothiazol-3-one (3:1) < 15 ppm.


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 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/d): 130 g/l (2010). This product contains max. 130 g/l VOC.



Substances of Content - Declaration

Polyurethane-/polyacrylate resin, titanium dioxide, silicates, calcium carbonate, water, glycols, ester alcohol, additives, preservative.

Customer Service Centre

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

International Distribution: Please see

Product recommendation:

Capacryl Holz SchutzGrund

Capacryl Holz-IsoGrund

Capalac AllGrund

Capacryl Haftprimer

Capacryl PU-Satin