Kerakoll Metric R2 Fix – High-Ductility Fibre-Reinforced Repair Mortar

Kerakoll Metric R2 Fix is a high-performance, fibre-reinforced, thixotropic mortar designed for non-structural repairs and restoration of concrete and masonry surfaces. Formulated to meet the requirements of class R2 according to EN 1504-3, it provides excellent adhesion, durability, and ease of application for a wide range of repair works.

Key Benefits

Discover the main advantages of using Metric R2 Fix in professional repair applications:

• High Thixotropy: Easy to apply vertically or overhead without sagging or slump.
• Fibre-Reinforced: Enhanced ductility and crack resistance.
• Single-Coat Application: Can be applied in thicknesses ranging from 2 mm to 40 mm in one layer.
• Versatile Repair Solution: Suitable for repairing deteriorated concrete, brick, and stone in both civil and residential projects.
• Manual or Machine Application: Apply with a trowel or mortar spray pump for efficiency on large areas.

Ideal Uses

Metric R2 Fix is perfect for a variety of non-structural repair and restoration projects, including:

• Localised and widespread non-structural concrete repairs
• Restoration of brick, stone, and concrete architectural elements
• Crack-prevention interventions on vertical and horizontal substrates
• Base coat for embedded fibre reinforcement meshes in strengthening systems

Application Instructions

Surface Preparation

Proper substrate preparation is critical for adhesion and long-term durability:

• Mechanically roughen and clean the surface (scarification, sandblasting, or hydro-demolition, 1–2 mm depth).
• Remove dust and debris with compressed air or high-pressure water.
• Pre-wet substrate until damp but without standing water.
• For masonry, ensure the surface is clean and pre-wetted.
• Use welded or reinforcement mesh on large repairs or thick layers.

Mixing

Follow correct mixing ratios for best performance:

• Mix the entire 25 kg bag with the specified water quantity (see packaging).
• Use a low-speed mixer, mortar mixer, or continuous mixing pump.

Application Method

Metric R2 Fix can be applied manually or mechanically depending on project size:

• Apply manually with a trowel or mechanically with a mortar spraying machine.
• For multi-layer applications, allow each layer to harden before applying the next.
• For mesh-reinforced systems, embed Geo Grid 120, Geosteel Grid, or Rinforzo ARV 100 into the first coat. Press firmly, then cover with a second layer.
• Finish with a sponge float when surface reaches the correct consistency.

Curing

Curing ensures durability and performance:

• Protect from direct sunlight and strong wind during curing.
• Allow at least 24 hours curing before exposure or further works.

Cleaning & Maintenance

Cleaning tools immediately prevents product hardening:

• Clean tools and machinery with water immediately after use.

Important Notes

For safe and effective use of Kerakoll Metric R2 Fix:

• For professional use only
• Apply only between +5 °C and +35 °C
• Do not add external binders or additives
• Do not apply on dirty, friable, or non-mineral surfaces such as gypsum, wood, or metal
• Store in a dry place, away from humidity and direct sunlight

Metric R2 Fix offers a reliable solution for high-quality restoration work on mineral-based substrates, delivering consistent performance in both indoor and outdoor environments.