Contact Us

  • Celtic Sustainables
  • 01239 777009
  • 9 Parc Teifi Cardigan Ceredigion SA43 1EW


About us

Put something nice about your company here...

Skip to main content
Free delivery icon
Free delivery icon
Free delivery icon

Auro 301 Plaster Primer



Prices Include VAT


Prices Include VAT

Low VOC Primer

Auro 301 Natural Plaster Primer is designed for priming absorbent or uneven bare plaster before painting. Ideal for use on gypsum plasterboard and gypsum fibreboard and mineral interior plaster.

Materials which are highly or unevenly absorbent, such as gypsum plasterboard, should be pre-coated to achieve a uniform painting result. This avoids uneven, dull patches on the walls.

The best primer to use before applying dark colours onto new plaster. Auro 301 is a highly breathable primer, so ideal in older buildings and before painting with lime based or other breathable paint products.

auro-301-allergy-friendly-and-free-from-preservatives.jpgThis non-toxic primer has a milky appearance that dries transparent. This is a concentrate that you dilute 1:1 with water before use.

People with allergies or who are MI sensitive will be happy to know that, thanks to Auro's ecological choice of raw materials and compliance with the strict AgBB criteria on emissions (a German evaluation scheme for VOC emission from construction products), this product is designed to be suitable for allergy sufferers.

Apply with a brush, roller or spray.


  • Low odour product
  • Solvent Free
  • Preservative Free
  • Very low VOC content, < 1g/Litre
  • Breathable, < 0.1m SD value
  • Water based
  • Good adhesion - High Stabilising effect
  • Very economical concentrate
  • Interior use
  • Transparent finish
  • Concentrate (dilute 1:1 with water before application)
  • Vegan
  • Compostable residue
  • Brush, Roller or Spray application
  • Coverage of up to 20 sqm per litre


  • Water
  • Replebin®
  • Potassium silicate
  • Potash
  • Sugar surfactant

Drying time: Overcoatable after approximately 4 to 6 hours.
Approx coverage: 2 Litre = 40m2, 5 Litre = 100m2

Further Information:

*Replebin is an innovative, biogenic binder. It has been developed by Auro throughout a long term and complex research process. Replebin consists of plant alcohol esters with organic acides. This modern binder is legally protected and only available at Auro.

Natural products are neither odourless nor emission-free. The use of natural and plant based ingredients means that allergy and asthma sufferers and people who are chemically sensitive are much more able to tolerate Auro products, however they may cause allergic reactions in some.

For more detailed information download the Auro 301 Technical Datasheet and 301 Safety Data Sheet (opens in new tab).


Auro 301 Plaster Primer is certified as "Allergy Friendly" from the German IUG (translated to: Institute for Environment and Health) because it has features that are particularly favourable to people with allergies.

View the Allergy Friendly Certificate - page 3 for Auro 301 (opens in new tab).

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