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Primers and sealers — technical data

AURO Plaster Primer No. 301

Plaster primer

Manufacturer AURO Pflanzenchemie AG
Country of origin Germany
System family Primers and sealers
Supplied and applied by Earth Layers by Conmarble

The product

A solvent-free, low-emission water-based primer for strongly or irregularly absorbent mineral surfaces under clay finishes. It evens out suction so the clay coat pulls uniformly, and it stays open-pored so the wall keeps breathing.

Where it is used

Priming and levelling strongly or irregularly absorbent mineral surfaces Gypsum plasterboard and interior plastered surfaces Pretreatment before AURO and clay wall coatings

Substrates

Gypsum plasterboard Interior plastered mineral surfaces

Application data

Coverage, thickness, mix and cure, as declared by the manufacturer. Site conditions in the Gulf sit at the top of most of these ranges — allow for it in the programme.

Type Water-based emulsion, solvent free, low emission, based on Replebin binder
Composition Water, Replebin, potassium silicate, potash, sugar surfactant
Consumption Approx. 0.05 L/m² per coat
Dilution 1:1 with water for priming
Application Ceiling brush; spraying is also possible
Drying at 20 °C / 60% RH Re-coatable after 4 – 6 hours; completely dry after 48 hours
Density 1.0 g/cm³
Colour Milky, dries transparent
Shelf life 24 months unopened at 18 °C

Performance data

Every figure below is reproduced from the manufacturer's own technical data sheet, with the test standard it was measured against. The sheet itself is in the download section.

PropertyResultStandard
Permeability Open-pored, DC value < 0.1 m AURO data sheet
VOC — product < 1 g/L AURO data sheet
VOC — EU limit 30 g/L for this category EU Directive 2004/42/EC II A (a)(Wb)
Product code M-DF 01 dispersion paints, solvent-free AURO data sheet

Where not to use it

The limits are as much a part of the specification as the performance. Everything here is stated on the manufacturer's data sheet.

Interior mineral substrates under clay finishes — not a general-purpose primer High humidity, low temperatures and heavy application all delay drying significantly Store cool and frost-free
Specification clause

Plaster primer: AURO Plaster Primer No. 301, diluted 1:1 with water, applied by brush at approximately 0.05 L/m² per coat to strongly or irregularly absorbent mineral substrates before clay plaster. Re-coat after 4–6 hours. Product VOC less than 1 g/L against an EU limit of 30 g/L.

Square brackets mark the choices that belong to the project. Send us the finishes schedule and we will return the clause completed, with the sample and mock-up programme against it.

Documents

Every document is the manufacturer's own, reproduced in full and unaltered under our cover. Free to download, no form.

TECHNICAL DATA SHEET · 3 pp · 0.9 MB
Download (PDF, 0.9 MB)

The rest of the

Primer 100 Water-based adhesion promoter Maxipur 100% Two-component polyurethane sealer — gloss, satin, matt

Technical support for the design team

We supply the material and we apply it, so the specification and the workmanship sit with one party. Send a finishes schedule, an elevation or a mood board and we will come back with the system, the build-up, the sample programme and a completed clause.

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