Fiber-reinforced cementitious matrix (FRCM), also called textile-reinforced mortar (TRM), is a thin structural layer which combines specially designed mortar with carbon or glass fiber grid reinforcement. It is an economical solution exceptionally suitable for repair and strengthening of historical structures.

FRCM Systems Have Many Advantages

Men installing FRCM with mortar on ceiling
  • Quick and easy installation requires less preparation than traditional FRP strengthening and also ensures minimal downtime
  • Cost-effective solution compared to traditional concrete strengthening
  • Does not add significant weight or mass to the structure, which makes it ideal for historical buildings and structures
  • Outstanding performance for strengthening irregularly-shaped structures and substrates

Sika’s FRCM Systems Come in Two Types

1. Carbon Fiber Grid Reinforcement
Carbon Grid Reinforcement with Sika CarboDur Grid

A patented carbon-fiber grid embedded in a specially designed repair mortar for the reinforcement of concrete or masonry structures.


  • Reinforcement of structures in damp environment and up to 80 °C (176 °F)
  • Enhancement of tensile strength in two directions (bidirectional)
  • Easy and fast to handle and to apply, less waiting time after concrete repair
  • No UV protection required
  • Better behavior in case of fire
2. AR Glass Fiber Grid Reinforcement
Illustration of trowel application of mortar on carbon grid reinforcement FRCM on masonry wall

Alkali-resistant glass fiber grid embedded in a specially designed repair mortar for the reinforcement of masonry structures.


  • Suitable for reinforcement of all types of solid masonry (bricks, tuff, natural stones, etc.)
  • Suitable for high service temperatures
  • Moisture-tolerant
  • Based on structural design guideline CNR DT-215
  • Tested according to Italian guideline D.CS LL.PP. n.1/19
Free Sika FRCM Software
  • Free calculation tool for design of FRCM reinforcement systems on concrete and masonry
  • With Sika FRCM Concrete Software, it's possible to design:
    -Shear strengthening of reinforced concrete (RC) section
    -Flexural strengthening of reinforced concrete (RC) section
    -Confinement of a concrete column
  • With Sika FRCM Masonry Software, it's possible to design:
    -Shear strengthening of a wall
    -Flexural strengthening of a wall in-plane and out-of-plane
    -Confinement of a masonry column     
  • Includes numerous options and many languages implemented, making it a useful tool for a large number of structural reinforcement projects
  • Complex calculations in minimum time
  • Updated on a regular basis
  • User-friendly interface
Register to download the new Sika FRCM Software
Please, read carefully before you download the tool:

To obtain the tool, it is necessary to register on the dedicated form. Following registration, the link from which you can download it will be sent by e-mail.

At each opening of the tool, check back on the link in the email you received to be sure you are using the latest version.

When you open the Excel worksheet, you must enable macros and accept usage terms.

This calculator application and the results derived from its utilization are intended only for use by professional users with expert knowledge in the area of the intended application. Users must independently verify the results before any use and take into account the site and application conditions, product data sheet and product literature, technical state of the art as well as local applicable standards and regulations.

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Download a brochure to learn more
Watch a video about installation
Sika® CarboDur® Grid C - Patented Carbon Grid Reinforcement System Installation

Watch the video to see step-by-step instructions and key recommendations for applying Sika's carbon fiber grid reinforcement system.

  1. Prepare the substrate
  2. Prepare the reinforcement
  3. Prepare the mortar
  4. Apply adhesive to substrate
  5. Install and embed pre-cut grid
  6. Finish the reinforcement composite and smooth the surface

See How Sika FRCM Systems Are Applied at the Uffizi Museum in Florence, Italy

Key Brands

Sika® CarboDur®
Sika MonoTop®

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