What is a claustra or Brazilian bond?

A claustra, also known as a Brazilian bond, is characterized by openings in the masonry. These are created by laying the bricks only with their ends on the underlying bricks. This results in a translucent effect in the facade, creating a stunning aesthetic feature.

Advantages of claustras:

  • Aesthetic appeal
  • Natural light with privacy
  • Adds extra distinction to the facade
  • Gives the facade the effect of lacework

Disadvantages of claustras:

  • Limited contact surface results in weaker masonry
  • Precipitation must not enter the cavity! Seal the cavity so that occasional rainwater can be drained.
  • Behind the claustra wall, a load-bearing wall is usually not provided; therefore, the anchoring of the facade requires greater attention!
  • The length-to-height ratio must be carefully considered to ensure stability.

Key considerations:

  • Adhesive is stronger than mortar and also bonds better.
  • Keep the contact surface as large as possible.
  • Fewer openings per surface area.
  • Limit the height of the openings (over fewer brick layers).
  • Consider providing reinforcement.