4611
CLAY MASONRY MORTAR AND BASE PLASTER
2in1: For bricklaying and plastering.
Natural living comfort with sustainable materials
- Increases natural living comfort: breathable, moisture-balancing, room climate regulating, heat-storing.
- High clay content: particularly high water absorption capacity, ensuring exceptional good indoor climate.
- Absorbs pollutants and odours: purifies the indoor air.
- Contains only natural materials: For ecological construction (e.g. wood buildings, straw houses).
- Does not require reinforcement: Contains optimal particle size distribution from own local clay source.
- Much lower carbon footprint than cement and lime mortars.
Area of application
- Indoor: wall + ceiling
- Suitable for monuments and historical buildings
- Vapour permeable
Processing method
- For hand processing
- For the construction and reconstruction of clay buildings.
- For plastering clay building elements and all conventional building materials.
- For the surface treatment of straw and wooden substrates.
RECOMMENDED SYSTEM PRODUCTS
Processing details
Learn more about technical details for processing this product.
Substrate requirement
The substrate must comply with the applicable standards, must be solid, free of loose particles, free of dust, paint, residues of demoulding substances and efflorescence. It must be sufficiently rough, dry and evenly absorbent. The surface shall not be frozen or water-repellent. The substrate must be stable in volume.
Substrate preparation
Depending on substrate absorption and climatic conditions: masonry and absorbent substrates need to be thoroughly moistened and provided with a "false contact bridge" to spray the Cemix 4612. Provide Cemix 4610 clay joint bridge on concrete and material transitions. Where applicable, modify non-standard substrates by a suitable method to achieve the required properties. Dampen bricks for masonry thoroughly. The substrate shall comply with applicable regulations, standards, or material manufacturer's recommendations.
Preparation of the mixture
Contains so much clay that no reinforcing fibres are required. If desired, max. 0.2 weight percent straw fibres can be added.
Prepare the material by pouring the dry mixture into the prescribed amount of water. Use potable water or water complying with EN 1008. Mix using a slow speed propeller mixer to a homogeneous, lump-free mass. Leave to rest. Then mix again briefly. Use suitable machinery when processing by machine.
Water demand
| Quantity | Liters (Min) | Liters (Max) |
|---|---|---|
| 1 kg | 0.18 L | 0.22 L |
| 25 kg | 4.5 L | 5.5 L |
Mixing
Processing instructions
Masonry: spread the mortar evenly over the wet bricks. Set the brick and level it.
Plastering: Apply the plaster to the surface with a trowel or other suitable tool. Then roughly level the surface with a squeegee or trowel to the required level. After the plaster has set, trowel the surface to the required flatness. The minimum curing time of the core plaster is considered to be 1 day per 1 mm of applied layer. The plaster forms a base and levelling layer for the stucco.
Application thickness
| Minimum layer thickness | 10 mm |
|---|---|
| Recommended layer thickness | 15 mm |
| Maximum layer thickness | 20 mm |
Consumption
Yield
| Material consumption | at | unit | Yield |
|---|---|---|---|
| 25 kg | 15 | mm | 1.01 m² |
Working time (potlife)
180 min
Treatment after application
After application, the direct negative effects of sun, heat, humidity and draughts should be avoided. Protect from frost and rain. Direct heating of the surface is prohibited.
Tool and cleaning instructions
Wash off tools with water immediately after finishing work. Clean dried residues mechanically.
Technical parameters
| Main binder | Clay |
| Made of material | Aggregate, natural clay, cellulose and fibreglass. |
| Flammability class | A1 |
| Max. grain size | 2mm |
| Adhesion after dry storage in ≥N/mm²(ETAG004) | 0.1 |
| Thermal conductivity λ in W/(m.K) | 0.71 |
| Water vapour diffusion resistance factor µ | 25 |
| Dry bulk density in Kg/m³ | 1600 |
| Dry bulk density in Kg/m³ to | 1800 |
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- Opening hours: weekdays 7:30 a.m.–3:00 p.m.
- Email: info@cemix.cz