Poroton wall - that's what matters

For the bricking of Porotonziegeln different professional instructions apply. They depend on the respective type of brick and must be observed. In particular, the Überbindemaß and the exact alignment of the wall are crucial for the load capacity. What you have to pay attention to, and how the walls of Porotonsteinen go, is explained in detail here.

Types of poroton tiles

  • High hole or oblong brick
  • Filled high hole or oblong bricks
  • Poroton brick as a plane brick

High hole or long hole brick

They represent the basic variants. Depending on the arrangement of holes, the number of holes as well as hole size and web width, the static properties are different. This must be taken into account in the construction. Long hole bricks are not suitable for load-bearing walls because of the low strength.

Filled high hole or oblong bricks

They contain insulation material in the openings. This should make additional insulation on the building possible in lesser strength. The openings may be filled with pearlite or other materials.

Poroton brick as a plane brick

In the execution as a planographic brick Porotonziegel are exactly dimensioned. They can therefore be installed with very small joint width (thin-bed mortar). The butt joints need not be mortared in the case of flat stones.

Due to the smaller joint width, an overall higher heat protection is achieved. Insulated plan stones as Hochloch- or slotted holes are relatively expensive. Aerated concrete is a clearly cheaper alternative here.


The Overbinding Measure plays an important role in the wall's strength. The overbonding dimension indicates the width of the offset of the individual joints of a row of stones. According to DIN 1053-1, it must be at least 45 mm for Poroton, and 0.4 x stone height for higher stones. Otherwise, the carrying capacity of the wall is not guaranteed.

Poroton wall - so it goes step by step

  • Poroton brick
  • Thin-bed mortar with flat stones, otherwise suitable mortar
  • Cement mortar (P III) for the substrate
  • water
  • directional strings
  • spirit level
  • Accessories for tensioning the guideline
  • straightedge
  • plummet
  • rubber hammer

1. Align the ground

The first stone row is placed on a sufficiently thick cement mortar bed (P III mortar). In it, the stones are aligned exactly. Tension the guideline.

2. Put first row

Each stone must be aligned individually. Check with spirit level, leveling rod and sinker. Adhere to the rule given by the guide.

3. More rows

Pay attention to the correct overbinding size. Set the stones exactly and check each stone. When working with thin bed mortar, use a mortar carriage.

Tips & Tricks

Proper walling is not a hobby task, but requires a lot of specialist knowledge, practice and care. So you should not go to work yourself lightly.

Video Board: Wienerberger UK: BIM Building Information Modelling