Topic 8 Products for gardens and landscapes

Surface drainage system

Requirements for proper execution of the pavement (surface water drainage is present):

  • The bedding (bed) should be well-sealed to prevent sagging
  • To build/shape a good slope towards the water intake (the place where the water will be drained) outside the paved area or to the pipes of the constructed sewerage system.


Stages of paving / slab paving:

  1. Preparation of the base

– Before the installation of the pavers, it must be checked whether the bearing capacity of the base is sufficient. Water-retaining layers should not be allowed. Water-permeable bases or sloped bases have a special advantage.

– In bedding courses (beds)  use ballast, laid in layers up to approx. 15-20 cm, each of which should be well compacted before laying the next one. The total thickness of the bed should be at least 30-40 cm.

  1. A concrete slab (e.g. the Baumit Concrete product) or a layer of cement screed (e.g. made of Baumit Solido E225) with a thickness, depending on the load, from 5 cm to 8-10 cm is laid on the prepared base.
  1. Stirring the solution – it is recommended to stir the solution in a mechanized gravity or flow mixer; use clean drinking water to stir the dry mixture.
  2. Laying of paving/slabs:

4.1 cement-based plaster – it is performed according to the so called ‘wet-on-wet’ method on the substrate of drainage solution, e.g. Baumit GalaDrain). Make sure that the stones or the slabs are well cleaned before laying. When applied in warm weather, the stones/slabs must be pre-moistened with water.

4.2 concrete slab:

– Wait for the base to dry well.

– Apply a layer of tile/slab adhesive (e.g. Baumit GalaBond) on the base of the comb (10-20 mm), depending on the type and size of the final coating, as well as its flatness of the gluing side.


5. The grout (e.g. Baumit GalaFugue) between the pavers/slabs must be watertight so that it does not allow surface water to penetrate into it. Baumit GalaFuga contains special additives that make it resistant to frost and lye, as well as be with a minimal tendency to salting.


Necessary tools and materials

Mixer – to make the binding solutions homogeneous

Rubber trowel – to spread the solution


Vibratory plate – to seal the base

Aluminum straight edge – to spread the solution and level the pavement

Angle grinder – to cut and shape pavers, slabs, curbs