Water-dilutable priming coat with adhesion promoting and
stain inhibiting properties. For interior use.
LV Texte

Field of Application

To be used for interior coatings offering good sealing/inhibiting properties on substrates showing nicotine soot and water stains, discolouring ingredients and substances containing aniline.
Also suitable as a stain inhibiting coat before decorating (hanging wallpapers). In addition, the primer has a sealing effect on wood or derivative wood products with wood contents and is therefore used before applying dispersion/emulsion paint coatings.

Material Properties

  • Water-dilutable, ecologically compatible.
  • High insulating effect.
  • Primer-sealer according to German VOB.
  • Diffusion-capable.
  • sd-value < 0.1 m
  • High adherence.
  • Low odour.
  • Low tension.
  • Alkali-proof.

Material Base / Vehicle

Cationic polymer resin in solution.

Packaging/Package Size

5 litres, 12.5 litres



Due to its incompatibility with other materials the product cannot be tinted.

Gloss Level

Matt (according to DIN EN 13 300)


Keep in a cool, but frost-free place.


approx. 1.4 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

The substrate must be sound/stable, dry, clean, and free from all substances that may prevent good adhesion. In Germany: Follow VOB, part C, DIN 18 363, section 3.
Follow Technical Information No. 650 (Substrates and their Preparation).

Substrate Preparation

All usual mineral substrates (renders/plasters, concrete, brickwork/masonry), fibre-cement, wooden fibreboards and chip boards, gypsum, plasterboards, existing paint coatings, ceramic coverings, as well as glass, synthetic materials (check for compatibility by preliminary trial coating) and non-ferrous metals.
Wash off nicotine, soot or fat/grease stains with clean water, adding a fat-dissolving household detergent, and allow the surface to dry well. Remove dried-up water stains with a dry scrubbing brush.

Method of Application

Apply with paint brush or roller. Clean tools immediately after use with water.

Surface Coating System

Priming coat
to be carried out with undiluted product. Apply a second coat, if substrates are subjected to extremely high loads.

Further treatment
with all types of Caparol emulsion paints for interior use, in compliance with current Technical Information.


Approx. 90 - 110 ml/m2 per coat on smooth substrates. On roughly textured surfaces correspondingly more. Determine the exact amount of material required by coating a test area on site.

Application Conditions

Minimum Temperature for Application and Drying:
+5 °C for ambient air and substrate. To ensure an optimum insulation effect a minimum temperature of +16 °C is required.

Drying/Drying Time

At +20 °C and 65 % relative humidity allow to dry for at least 12 hours between coats.
Lower temperatures and higher humidity extend the drying time.


Do not mix or dilute Caparol Aqua-Sperrgrund with other materials.
For coating highly soiled or polluted surfaces or for short-term renovation of rooms which must be reused within one day, it is advisable to use the highly covering quick-renovation paint Dupa-inn Nº1 (Follow Technical Information No. 385).
Rooms where foodstuffs are produced, stored or sold, must be well-ventilated for min. 3 days (after having finished with paint work) before reuse.

Please Note (Status as at Date of Publication)

Keep out of reach from children. Ensure good ventilation during use and drying. Do not eat, drink or smoke while using the product. In case of contact with eyes or skin, immediately
and thoroughly rinse with water. Do not allow product to enter drains, waterways or soil. Clean utensils immediately after use with soap and water. Do not breathe spray dust.
Further information: See Material Safety Data Sheet (MSDS).

Contains: 1,2-benzisothiazol-3(2H)-one, 2-methyl-2Hisothiazol-3-one. May produce an allergic reaction.
In Germany: Advice for allergy sufferers with isothiazolinone allergy: Hotline 0180/5308928
(0.14 €/minute from German landline, MTS max. 0.42 €/minute).


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/g): max. 30 g/l (2010). This product contains max. 20 g/l VOC.

Product Code Paints and Enamels

M-GP01 (Germany)

Substances of Content - Declaration

Polyacrylate resin, titanium dioxide, silicates, water, glycol ether, additives, preservatives (methyl-/benzisothiazolinone).

Customer Service Centre

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

International Distribution: Please see