ARDEX R 1 is a brilliant white, cementitious, Rapid Drying Renovation Plaster for difficult walls and ceilings. It’s ideal for Smoothing and plastering of walls and ceilings in dry internal areas, prior to the application of wallpaper, paints, dispersion based renders and other wallcoverings. Suitable for use on existing finishes and new backgrounds such as concrete, plaster, brickwork, ceramic tiles, old wall paper and paints.
- Ideal for problem walls, covers ARTEX and sound wallpapers, paint and tiles
- Can receive finishes in as little as 24 hours, regardless of thickness
- Brilliant White
- Tension and crack free
- Slump free
Download the latest datasheets and certificates here;
ARDEX R1 Technical Datasheet (TDS)
ARDEX R1 Health & Safety Datasheet (SDS)
ARDEX R1 Declaration of Performance (DOP)
ARDEX R1 Environmental Product Declaration (EPD)
ARDEX R1 Sustainability Datasheet
Mixing ratio
approx. 12.5 litres of water – 25kg powder is equivalent to approx. 1 part water: 2 parts powder
Bulk density
approx. 1.0kg/litre
Fresh mortar weight
approx. 1. 4kg/litre
Material requirement
approx. 1.0kg of powder per m²/mm
Working time
approx. 30 minutes
Compressive strength
1 day: approx. 5 N/mm²
7 days: approx. 9 N/mm²
28 days: approx. 11 N/mm²
Tensile bending strength
after 1 day: approx. 2.0 N/mm²
after 7 days: approx. 3.0 N/mm²
after 28 days: approx. 4.0 N/mm²
pH value
Wet mortar: approx. 12
Dry mortar: approx. 10