A Blocklaying Breakdown

Similarly to bricklaying, blocklaying is a skill that can be perfected by any individual. But, they must have the right level of knowledge and physical ability. With any construction project, it is also important that it is not undertaken without the proper tools. As well as the materials and appropriate health and safety procedures in place. However, the step-by-step process is pretty much the same as is with laying brick. So, check out our blog post here.

Therefore, instead of risking being repetitive, this blog post will provide you with tips and facts. You can follow this along with the step-by-step process, linked above.

Blocklaying Facts

  • Both concrete and lighter thermalite blocks are around 100m thick.
  • Additionally, they are quicker to lay than bricks. Due to the fact that 1 is the same size as 6 bricks. This also decreases cost in labour time.
  • Blocks and bricks can be bonded together. Because of the fact that 2 blocks (connected with mortar) equals 3 bricks (connected with mortar.)
  • Although, blocks are not easier to lay than bricks.
  • Lighter thermalite blocks are good sources of insulation.
  • Thermalite blocks are easy to cut to size using an ordinary saw.
  • Moreover, they can be drilled into as easily as wood.
  • The small air pockets in thermalite blocks are perfect to withstand damp weather. They are also fire resistant.
  • Glass blocks can be laid as regular blocks with the use of mortar.
  • These glass blocks are generally used to bring light into buildings.
  • Blocklaying in general can be perfected by an amateur DIYer, as long as practice is carried out prior.

Blocklaying Tips

  • Research which mortar mixes are beneficial to which type of block you are using. This will differ.
  • You will need to constantly check if your blocks are level. Your spirit level will enable you to do this. In addition to this, you can stand back and see for yourself if it is drifting to one side.
  • Hitting your blocks with a trowel to level them is not advised. This can result in moving the position of the previously laid blocks.
  • Adding a twisting motion when laying blocks can aid in finding the right level/position.
  • Blocklayer lines (or line pins) can be used to check that the blocks are level. Although, you should avoid using them if your wall is over 6m long as it will dip in the middle.
  • If you plan on building a high wall then take care when using ladders and scaffolding.


Remember, this blocklaying guidance is exactly that, a guild. Tips may or may not be followed depending on your project. Therefore you should research further or consult a professional, like us, before starting.

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