harb
Mineral bonding agent for concrete, mortar & screeds
About this product
harb is a liquid additive that creates a strong and permanent bond between cementitious concrete, screed and mortar. Thanks to its strong and elastic adhesion, it can also withstand high stresses.
Key features
All relevant product information can be found and downloaded here. Click the individual Tabs to find out more.
- Areas of Application
- Instructions
- Downloads
Areas of Application
Areas of Application
Application types
- As a bonding agent for concrete
- As a bonding agent for screeds
- As a bonding agent for mortar
- Suitable for wet and outdoor areas
Construction project types
- Suitable for all types of construction projects
Instructions
Instructions
Subfloor pre-treatment
- Proper subfloor preparation must be ensured by shot blasting, milling or grinding.
- The surface of the subfloor must be clean, absorbent, load-bearing, firm and free of cracks.
- After preparation, the surface must then be cleaned and watered at least 24 hours in advance so that the substrate has absorbed sufficient moisture.
- Avoid the formation of puddles.
- The size of the surface to be treated with harb must be selected so that the new concrete, screed or mortar can always be applied fresh on fresh.
Mixing instructions
- Mix all aggregates including the mineral bonding agent harb as described in the mix design in a container provided for this purpose.
- Next, stir the mixture thoroughly with a hand mixer for at least 3 minutes until a slurry is formed.
- Spread the ready-mixed bonding agent over the prepared subfloor and brush into the subfloor with a hard broom.
- Immediately cover the brushed-in bonding agent with concrete, screed or mortar to prevent it from drying out prematurely.
- Depending on the condition of the subfloor, material for 15-20 m² is obtained.
Downloads