Reinforcing concrete blocks - this is how it works

How to concretely and correctly build concrete blocks is described in detail in the following instructions. In addition, which tools are required and what you have to pay attention to when building walls made of aerated concrete blocks.

wall thickness

When building a house, the respective wall thickness is already given by the construction plan. For free-standing walls, it is important to choose a suitable strength for the height and length of the planned wall.

Thickness of the mortar layer

The thickness of the required mortar layer and thus the subsequent joint width is also given in most cases. In some cases, no mortar is needed - the stones can also be glued.

Reinforcing concrete blocks - this is how it works: blocks

water barrier

A horizontal barrier is required on all walls with aerated concrete blocks. Due to their porous properties, aerated concrete blocks absorb a great deal of water, which they also store well.

This can lead to a prolonged serious moisture load with rising water. An adequately designed and carefully designed water barrier is therefore indispensable.

Trowel and mortar sled

Both KIT trowels and mortar slides must be adjusted to the stone width and the required joint thickness. Therefore, a separate mortar sled or trowel must be available for each kind of stone.

Gas concrete blocks build up step by step

  • Aerated concrete blocks
  • Thin-bed mortar
  • insulation
  • cement mortar
  • mortar carriage
  • matching KIT trowel
  • rubber hammer
  • Drilling machine and agitator
  • spirit level

1. Seal foundation walls

Aerated concrete needs a suitable horizontal barrier against rising moisture. This is done by insulating foil. Apply a layer of cement mortar, place insulating foil with 5 cm of supernatant. Fix with another layer of cement mortar. A multi-layered construction is possible.

2. Preparations for the walls

Use the stirrer at slow speeds (!) To mix the thin-bed mortar. There must be no air pockets. Lay the trowel or fill the mortar carriage.

3. walls start

Put the first stone row. Always place the bricks exactly perpendicular to the cement mortar layer and carefully level horizontally and vertically with the spirit level. Pay attention to the exact fitting in the tongue and groove connection. Check the fit of each stone individually. Remove cement mortar emerging from the joint.

4. Continue walling

Continue walling after the first row of stones in half offset. Cut stones with saw and angle, if necessary. Apply a precisely even coat with the mortar carriage and then insert the stones exactly vertically one at a time.

Tips & Tricks

As a seal for the foundation wall can also serve a layer of weldable roofing felt. In this case, but below an additional insulating layer must be painted.

Video Board: Reinforced masonry wall