HML 4 / Historical Plaster

Details:

• Reinforcement: Armored with polypropylene fibers
• Maximum Grain Size: 4mm
• Cement Content: None
• Applications: Suitable for new and renovated buildings, restoration, and repair of crumbling and porous plaster.
• Compatibility: Suitable for use on old lime-based plasters.
• Vapor Permeability: High water vapor permeability.
• Temperature Resistance: Excellent resistance to temperature fluctuations.
• Adhesion: Excellent adhesion to the substrate.
• Environmental Impact: Eco-friendly.
• Ease of Use: Easy to handle.

Preparation:

1. Surface Condition: The surface to be renovated must be dry and free from dirt, grease, lichens, and paint.
2. Mechanical Removal: Alkyd-based coatings must be mechanically removed from the entire surface.
3. Joint Cleaning: Cracks and brick masonry joints should be carefully cleaned of atmospheric contaminants.
4. Surface Preparation: Loose particles must be removed down to the solid layer of the surface.
5. Degradation Removal: Cracked and non-homogeneous materials should be mechanically separated or cleaned with a high-pressure washer.
6. Salt Damage: Remove the old plaster layer affected by salt up to 1 meter above the visible salt line.
7. Priming: Treat the old plaster with SAKRET TGW primer.
8. Material Consistency: SAKRET HML4 is a material of loose consistency.
9. Mixing Options: The mixture can be prepared with a mixer, concrete mixer, or using SAKRET SERVISS’ preparation and mixing equipment.
10. Mixing Time: Mix for 3 to 5 minutes until a homogeneous consistency is achieved.
11. Layer Thickness: The thickness of the layer can range from 5 to 30 mm (single layer thickness: 5-12 mm).
12. Restrictions: Do not add lime, cement, or additives that improve the properties of the concrete mixture to the dry mix.
13. Equipment: Do not use dirty equipment for plaster preparation and avoid storing or using bags that are not in proper condition or have been previously opened.
14. Technical Conditions: Technical data refer to a temperature of +20°C and a relative humidity of 50%. Lower temperatures increase, while higher temperatures decrease the specified values.
15. Curing Protection: During the curing phase, protect the mixture from sunlight, drafts, and temperatures above 30°C.
16. Moisture Protection: Fresh mixtures should be protected from rain and excessive drying.
17. Water Addition: Once the mixture begins to set, do not add water!
18. Cleaning: Immediately after mixing, wash the containers and tools with water.
19. Cured Material: Cured mixtures can only be cleaned mechanically.
20. Chemical Reaction: Contains lime, reacts alkaline.
21. Safety Precautions: Protect skin and eyes; adhere to technical instructions. If the mixture comes into contact with eyes, rinse with plenty of water and seek medical attention if necessary.
22. Storage: Protect the packaging from weather influences; store on wooden pallets in a cool and dry place, and immediately cover any opened packaging.