Mortar trowelsMortar trowels

Scoop­style mortar trowels are available with various notch patterns and in different widths to suit all wall thicknesses; they make it easy to apply the correct amount of thin­bed mortar to give a full­fill bond.

Rubber mallet2

A rubber mallet is used to tap the masonry units into the fresh mortar bed and align them plumb and level [2].

Spirit level3

A spirit level is used to check that the blockwork is plumb and that the bed joint is sufficiently level to lay the next course of blocks using the thin­bed system. We advise using long spirit levels (≥ 200 cm) as this is the only way to accurately determine whether the blockwork is suffi­ ciently plumb and level.

Paddle mixer4

Thin­bed mortar is mixed in a mortar bucket in accordance with the instructions. To obtain the desired consistency it is advisable to use a particularly low­speed mixing machine (or drill) and a robust mixer with long paddles. Paddle mixers should be thoroughly cleaned after use.

Ytong sanding board and Ytong rasp



Ytong AAC can also be sanded down if the blockwork is out of level or plumb.

A sanding board is sufficient for removing small amounts of material. If larger amounts of material have to be removed, use the Ytong AAC rasp.

This can be followed by a second sanding if necessary. In both cases the sanded surface must be carefully swept afterwards to ensure that the thin­bed mortar forms a strong bond in the bed and head joints.

Ytong wall chaser7

The Ytong wall chaser provides a simple means of forming grooves up to 3 cm deep in Ytong walls (e.g. for electrical connections).

Cutting tools for masonry blocks8

Since the dimensions of the masonry block do not necessarily match the dimensions of the wall, blocks can easily be cut on site. AAC hand saws [8] in combination with an angle guide [9] designed for cutting AAC, electric hand saws [10] with a suitable saw blade or band saws [11] allow for precision cutting.





A masonry stepladder makes it easy to lay masonry blocks on low wall sections. It is important to ensure that equipment and construction materials do not hamper the construction process.

Larger and higher wall sections require stationary scaffolding, which should be erected in accordance with the applicable safety requirements to ensure health and safety in the workplace. Do not place packs of masonry blocks on scaffolding without checking that it has sufficient load­bearing capacity. Keep walkways clear at all times to ensure a fast and efficient workflow.