Auro 301 – Natural Plaster Primer – Breathable

Auro 301 – Natural Plaster Primer – Breathable

£5.00£50.00 Inc VAT

Auro Paint UK

Natural Plaster Primer from Auro UK.
Perfect surface preparation for Auro wall paints on irregular, or highly absorbent wall materials.

  • Apply with ceiling brush, or spraying.
  • Highly stabilising
  • Naturally solvent free!
  • Perfect for bare gypsum plaster and plasterboard, as well as fibreboard, or other mineral plasters.

Natural plaster primer, eco friendly and non toxic plaster primer by Auro.

Auro 301 Natural Plaster Primer is a superb eco friendly, breathable and non toxic plaster primer designed as an alternative to conventional primers.This natural plaster paint uses only natural ingredients, but does not skimp on performance, offering you fantastic coverage and forming the perfect base for Auro natural wall paints.

100% natural and organic, Auro 301 Natural Plaster Primer is a quality plaster primer natural paint which combines incredible coverage and performance with a fantastic eco-friendly formula. Auro 301 is an easy to apply eco friendly and environmentally aware water thinnable plaster primer, particularly suitable for plasterboard and interior plastered surfaces.

Using Auro 301 plaster primer is a great way to economically cover highly absorbent and high suction surfaces. This natural plaster paint is ideal when using the darker coloured emulsions, or even when painting on skimmed plaster board. Guide to painting new plaster. 

  • Best applied with an emulsion brush, or ceiling brush. Spraying is possible
  • Dilute 1:1 with water and stir well
  • Dry and recoatable after 16 hours
  • Please clean tools with water and Auro 411 Plant soap
  • Coverage = Approximately 100m2 per 5 liters
  • Perfect for pre-treating and priming absorbent of irregularly absorbant mineral surfaces, for later painting with Auro wall paints
  • Colour tone: Milky, but dries transparent
  • Fill in holes, cracks, ruptures, etc., e.g. with AURO Natural wall filler No. 329* or a material corresponding to the construction
  • material, allow to dry.
  • Available in a tester pot, 2 Litres or 5 Litres


Want to keep the look of your plaster and use it as a colourless (breathable) seal?

The one product Auro Germany currently recommends for (breathably) sealing most bare plasters is this Auro 301 Plaster Primer – but using a different dilution to when using it as a primer.  A colourless *seal is formed by diluting this product 2 parts 301 primer to 1 part water.  A second coat can be applied if required.
* It may change the colour of the plaster slightly, so a trial application is of course recommended to make sure it meets your expectations.


Ingredients: water, Replebin®, potassium silicate, potash, sugar surfactant

FAQ – Do any paints contain or are they free from methylisothiazolinone?

If you’re looking for a natural organic primer with all the performance of conventional products, make sure you order Auro 301 Natural Plaster Primer online today.

Additional information

Weight 2.0000 kg
Dimensions 0.0000 × 0.0000 × 0.0000 cm

2L, 30ml Tester, 5L


Auro Paint UK

Order time cutoff is 11am
Orders arriving after 11am will be processed next working day

BANK HOLIDAY: We are closed on the Friday 24th May and the Monday, as will the couriers. So orders pre 11am Thurs will arrive on Tuesday, orders post 11am Thurs will arrive Wednesday. 

Read further details about shipping and tracking here.
Delivery speed: 1-2 Day - Usually, but not guaranteed Next Working Day

Up to 1L : £4.99
1.1L to 24L : £14.50
25L+ £59.99: 1-2 Day
Colour Charts: FREE Delivery

UK Postcodes listed below may incur additional shipping charges (Please check with us first)
AB / BT / DD / FK / HS / IV / KA / KW / PA / PH / PO / ZE

Large orders of big tubs will need to be sent on a pallet, so may be +1 or +2 working days. ECO PACKAGING: Testers use bio degradable corn starch infill packing pieces (these are only suited to testers and very light weight items though); on larger products we either use recycled/recyclable brown paper or we’re just starting to use pulped cardboard inserts for 2.5l and 5l tins - these are recycled and can either be recycled with household cardboard, composted or several people use them as firefighters!

Add products to basket and click estimate shipping to see costs.

All weekend orders are processed on Monday morning. We always advise trying a tester pot first.

* Postal Surcharges: Channel Islands, Isle of Man, Isle of Wight, Highlands & Scottish Isles incur a surcharge. These surcharges are set by the couriers and not by ourselves! Our standard pricing (graphic, pricing) is for mainland England only, with above modifiers. All orders placed after 11am are processed morning of the next working day. Standard delivery is 3-4 working days.

Please Note: All products (paints / finishes / oils / waxes etc) are held in white and clear only, everything else is hand coloured specifically to your order (when you select from a colour range) by our wonderful mixing team, so unfortunately cannot be returned. Please please please try a tester pot first beforehand!

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