gräfix 61 coarse hair
Coarse hair-lime base plaster
CS I · Air-lime plaster without added cement
Base plaster for vapour-permeable interior plaster systems containing air lime and animal hair. The animal hair serves to reinforce the plaster. Thanks to its sorption properties, gräfix 61 Haar grob can absorb and release moisture, thereby helping to regulate moisture levels on the wall surface.
When used as an exterior plaster, gräfix 61 coarse must always be provided with a weather-resistant finish.
Thanks to its coarse grain size of up to 4.0 mm, the plaster is particularly suitable as a base coat, e.g. on clay or reed, and creates a textured substrate for subsequent layers of plaster such as gräfix 61 or gräfix 61 fine.
Delivery: 25 kg bag
Grain size: 0 – 4.0 mm
- Standard plaster mortar in accordance with DIN EN 998-1
- Pure hand-applied plaster
- Compressive strength CS I
- Diffusion resistance μ 6–9
- Grain size 0–4.0 mm crushed limestone sand
- approx. 18.3 litres of fresh mortar
- approx. 730 litres/tonne
- Working time approx. 3–4 hours
- Supplied in 25-kg paper bags
- 40 sacks per pallet/1.0 tonnes
- Cement-free lime base coat with air lime as a binder
- reinforced with animal hair
- free from synthetic or synthetic resin components
- vapour-permeable with a vapour resistance of μ 6–9
- highly alkaline
- Contains air lime, crushed limestone sand and animal hair
- free from plasticisers
- free from biocides
- free from preservatives
- very good sorption properties
- the high pH value can create conditions on the surface that inhibit the growth of mould
- can be applied by hand
- particularly suitable for reed or clay substrates
- supports moisture regulation on the wall surface thanks to its sorption properties
- Suitable for vapour-permeable mineral interior plaster systems
- Coarse grain size for a textured substrate for subsequent plaster layers
- Remove coatings that reduce adhesion
- Pre-wet the substrate/masonry as appropriate
- For smooth substrates, gräfix 63 SB is required as a bonding primer
- Alternatively, roughen the surface with gräfix 66 HP
- Prime non-mineral substrates with gräfix 66 HP rough
- Mix one bag of gräfix 61 Haar grob with approx. 7.1 litres of water
- Apply by hand; the finish must be applied in several layers
- Plaster thickness: min. 8 mm to max. 15 mm per coat
- Coverage: approx. 50 m² per tonne at a plaster thickness of 15 mm
- Drying times: at least 1 day per mm of plaster thickness
- Please refer to the technical data sheet!
- Technical Data Sheet ► (DE) - (EN)
- Safety Data Sheet ► (DE)
- Declaration of Performance ► (DE)
- Brochure: ‘Lime plaster: as old as the hills and right on trend’
- Brochure: “Heritage Conservation, Preserving Value”
gräfix Lime Plaster Excellent
Air lime plasters in building biology
Air lime plasters are used in both new-build and renovation projects. They combine various properties relating to building biology and building physics with the design possibilities offered by mineral plaster surfaces.
Thanks to their open-pored structure and sorption properties, air-dried lime plasters can absorb and release moisture. This enables them to help regulate moisture levels on the wall surface.
The high pH value creates conditions on the surface that can inhibit the growth of mould. Their vapour-permeable properties allow them to be used in appropriately constructed mineral wall systems.
Trust through transparency
The gräfix Kalklinie range is based on a purely mineral formulation. The air lime plasters were tested in 2017 by the Institute for Building Biology and Sustainability (IBN) in Neubeuern.
