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  • Graphenstone GCS Primer Interior (12.5l).
  • Graphenstone GCS Primer (Interior) is available in three sizes, 0.75L, 4L and 12.5L.
  • Graphenstone GCS Primer for internal walls has great covering power.
  • Graphenstone GCS Primer for internal walls. Apply to intense colours walls especially when change from dark to light colours.

Graphenstone - GCS Interior Primer

£11.95  Price includes VAT


Product Description

Primer Paint for Walls and Ceilings (Interior)

Primer GCS Premium is a mineral primer with graphene technology for use with the Graphenstone Colour System (GCS) Interior paint range.

This primer allows a uniform colour to be obtained. It is recommended to homogenise repaired surfaces.

We recommend this primer for painting over dark colours to help save time and money especially when changing to a light colour.

Recommended for use with the Graphenstone Colour System Interior Paint.


  • Regulates the substrates absorption and texture
  • Helps to save material and labour (less finishing coats required).
  • Excellent hiding power and adherence
  • Contains high quality lime and graphene fibres
  • Anti-bacterial
  • Anti-mould effect
  • Naturally insect repellent
  • Very Low VOC, < 1 g/l
  • Tough and long lasting
  • Formaldehyde free

Drying time: Quick drying 4-6 hours before applying top coat(s).
Approx coverage: 11-14m2 per Litre

Further Information:

Mineral substrates must be at least 28 days old before application. Substrates must also be resistant to high alkalinity. If in doubt apply to a test area first.

In the case of rain (for exterior applications) let the substrate dry for at least 24 hours before applying the primer and protect the treated surface from rain until the application of the finishing coat.

Do not apply to surfaces in constant contact with water.

For more detailed information, download the Graphenstone GCS Primer Technical Data Sheet and GCS Primer Interior Safety Data Sheet (MSDS), opens in new tab.

Cleaning tools

Rollers, brushes and spray guns should be cleaned with warm water after use.

Packaging and Waste Management

Graphenstone Primer pots are made of polypropylene (PP) - number 5 in the recycling triangle code - and are therefore 100% recyclable. The plastic polypropylene pots that Graphenstone use are made of 80% recycled content.

Please recycle or reuse empty pots according to your local waste and recycling scheme. If you have left over paint please consider these ideas for using up or donating left-over paint. Please dispose of left over paint responsibly (paint should never be put down the drain).

Complete the look

Once dry Graphenstone GCS primed interior walls can be finished with top coat of;

  • GCS Interior - Indoor paint made with lime, silicate and graphene.

Primer application for Interior Walls

See the GCS Primer Technical Data Sheet for full details, however in brief:

  • Ensure the substrate is dry, clean and sound.
  • If the substrate has algae, mould or fungi (or other impurities) clean throughly with an appropriate product.
  • Sand previously painted surfaces lightly to create a "key".
  • Dilute with water (10-15% by weight).
  • Mix well but avoid excessive shaking to minimise bubbles.
  • Apply 1 coat evenly.
  • Do not go back over drying areas.

You may also need Brushes or Rollers, Masking Tape and Paint Trays - see our Painting Accessories page.

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