Keim Concretal Lasur is a sol-silicate mineral paint system for use on concrete surfaces to provide a colour wash or semi- transparent finish. Offers water repellency, vapour permeability and forms a chemical crystalline bond with the substrate.
Applies to in-situ and precast concrete walls, soffit elements and structures, blockwork, lightweight concrete, asbestos cement and cementitious building boards.
For providing a low pigment finish on fair-faced interior and exterior concrete surfaces to retain the fair faced appearance while concealing stains or repairs and for providing colour wash finishes. Retains surface texture and provides a protective water and weatherproof finish.
This product/system requires site trials - Although readily available, please ensure a specification has been issued after site trials have taken place. The colour and degree of dilution affects the final finish and this must be known before purchase. Contact us for more infornmation on 0113 2455450 or [email protected]
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Features & Benefits
- Sol-silicate mineral paint system
- Choose from over 200 colours
- For providing a low pigment finish on fair-faced interior and exterior concrete surfaces to retain the fair faced appearance while concealing stains or repairs and for providing colour wash finishes
- For use on concrete surfaces
- In-situ and precast concrete walls
- Soffit elements and structures
- Blockwork
- Lightweight concrete
- Asbestos cement
- Cementitious building boards
- Interior and exterior use
- Retains surface texture and provides a protective water and weatherproof finish.
- Colour fast - Unifies colour
- Easily cleaned - resistant to mould and fungal growth
- Free from solvents and biocides
- Non-flammable
Product Properties
| Material characteristics |
| Resistance to vapour diffusion: |
sd = 0.01 m |
| Density: |
1.15-1.45g/cm3 depending upon colour and opacity |
| Water Absorption Co-efficient: |
W = 0.20 kg/m2 h0.5 |
| Thermal Expansion: |
Comparable to the mineral substrate onto which it is applied. |
Application Instructions
Substrate Preparation
All loose, flaking and unstable material must be identified and then thoroughly removed, all surfaces must be thoroughly washed down with clean cold water to remove all surface dirt and dust. When all surfaces are clean, sound, wind dry, dust free and free from all surface contaminants, decoration using KEIM Mineral Paints may proceed.
Application
KEIM Concretal Lasur will enable a colourwash appearance to be applied to the concrete; this can match the surface and be employed to minimise any surface variations or blemishes. The system will protect the concrete whilst still maintaining the feel and appearance of a concrete façade.
KEIM Concretal Lasur should be applied by brush and laid off with a lambs wool pile roller or by airless spray, it is important that a wet edge is kept at all times and that contractors work to a natural breakline.
A typical specification would be a two coat KEIM Concretal Lasur system; the first coat to be KEIM Concretal Dilution or Base applied by brush and worked well into all surfaces. After a minimum period of 12 hours a final coat of KEIM Concretal Lasur may be applied, diluted to the required level with KEIM Concretal Dilution or Base.
Application Conditions
Ambient and substrate temperature above 5°C and below 30°C. Do not apply in direct sunlight or onto sun-heated surfaces, nor if it is raining or if there is an immediate likelihood of rain.
Consumption
For a two-coat system, using a 3:1 dilution ratio on the second coat, approximately 0.025lt/m2 for KEIM Concretal Lasur and 0.075lt/m2 for KEIM Concretal Dilution.
Consumption rates are offered for guideline purposes only and are quoted for smooth rendered surfaces. Actual rates are the responsibility of the applicator. Project specifications should be referred to for specific rates.
Cleaning of Tools
Clean tools with water immediately after use.
