Revealed: Legal Price per square meter to build in South Africa and the implications - Part 2

Posted by SAPAC Reporter on

Honeycombing in Concrete Construction: Importance of using experienced builders on SAPAC and SANS Standards

Press to Read Part 1

Concrete is one of the most widely used building materials due to its strength, durability, and versatility. However, the quality of concrete can be compromised if it is not properly designed, mixed, placed, and cured. One of the most common issues that can arise during concrete construction is honeycombing.

 SAPAC Hoenycombing

Photo credit: Internet search


"The most common cause of honeycombing is a result of the selection and type of builder approached, it is essential then therefore to approach and select the correct builder. See below for links to experienced competent builders" 

SAPAC Honeycombing

Photo credit: Internet search


Honeycombing is a condition in which voids or pockets of air are left in the concrete due to incomplete compaction. This can occur when the concrete mix is too dry, the formwork is not properly designed or installed, or the concrete is not adequately vibrated during placement. The result is a weak and porous concrete structure that is susceptible to cracking, corrosion, and reduced durability.

In the building of coastal homes, honeycombing is particularly important to prevent due to the harsh environmental conditions these structures face, such as saltwater, strong winds, and erosion. Honeycombing can compromise the stability and longevity of the structure and increase the risk of damage or collapse in extreme weather events.

"Selection of builders should not be about pricing per square meter. But rather, experience, there is a reason certain builders are listed on the SAPAC platform. Its not about listing but to provide you with the best options"  

To prevent honeycombing in concrete construction, it is crucial to follow the proper guidelines and procedures. The South African National Standards (SANS) provide guidelines and regulations for the design, materials, and execution of concrete construction, including the prevention of honeycombing.

SANS 10100-1: The structural use of concrete, Part 1: Design, specifies the requirements for the design of concrete structures, including the minimum compressive strength of the concrete, the design of the formwork, and the placement and compaction of the concrete.

SANS 10100-2: The structural use of concrete, Part 2: Materials and execution of work, provides guidance on the materials used in concrete construction, such as aggregates, cement, and water, as well as the execution of work, including the preparation and installation of the formwork and the placement and compaction of the concrete.

"The Selection of an engineer in the build of your home, or construction of your civil project should not be about pricing. But rather experience". Contact the SAPAC Help line to get into contact with competent Engineers Press here

The role of the builder and the engineer in preventing honeycombing is crucial. Builders and Engineer should liaising to ensure that the concrete mix design is suitable for the project's requirements and that the formwork and shuttering are properly designed and installed. The builder will also oversee the placement and compaction of the concrete to ensure that honeycombing is avoided.

In addition to following the SANS Standards and working with experienced engineers, there are several other best practices that can help prevent honeycombing in concrete construction. These include:

  • Correct selection of builder to start with.
  • Using a high-quality concrete mix that is designed for the specific project requirements.
  • Ensuring that the formwork is properly designed and installed and that it is water-tight to prevent leaks.
  • Using a vibrator to properly compact the concrete during placement.
  • Checking the concrete for honeycombing during the curing process and making repairs if and when needed.

In conclusion, honeycombing is a common issue that can compromise the quality and durability of concrete structures, particularly in the building of coastal homes. By following the proper guidelines and procedures outlined in the SANS Standards, working with experienced builders that liaise with competent engineers, and implementing best practices, Potential home owners can ensure that their concrete construction is strong, durable, and able to withstand the harsh environmental conditions faced by coastal homes.

SANS Standard Applicable: SANS 10100-1: The structural use of concrete, Part 1: Design,

SANS 10100-2: The structural use of concrete, Part 2: Materials and execution of work. 


What can happen if honeycombing is left unchecked!

If honeycombing is left unattended in concrete construction, it can lead to serious structural issues, such as reduced strength, increased porosity, and decreased durability. The presence of voids or air pockets can compromise the integrity of the concrete, making it more vulnerable to cracking, corrosion, and weathering. In extreme cases, honeycombing can result in structural failure, which can pose a significant safety risk to occupants and the surrounding environment. It is crucial to address honeycombing as soon as possible to prevent these issues and ensure the longevity and safety of the structure.


"It is therefore essential to partner with experienced seasoned builders!" Structural integrity confirms your Safety and that of the value of your perceived built that has to take place"



Contact a SAPAC Builder today!

Press here to gain access to Builders



If you require assistance Contact us

How to Use this Resource

We hope these articles help you understand your rights as a consumer. You can scroll through the titles, or scroll by heading. You can also use the search feature to locate information by keyword when you visit the front of for a self help video watch this VIDEO

SAPAC is a collective of registered professionals and contractors with a variety of skills and valid registrations in the construction sphere. If you have a particular question or believe that you want an expert opinion get in contact with SAPAC and our team will assist you with the correct information.


Share this post

← Older Post Newer Post →