Use

KS 9 is used as a base coat on brick walls, concrete blocks, concrete, etc. For special substrates, please consult the supplier's instructions.

Background preparation

The wall must be free of dust, dirt, salt efflorescence, etc. Any traces of oil, grease, wax, etc. must be removed beforehand. Smooth concrete surfaces must be dry and preventively treated with adhesion-enhancing materials such as SP 22, or with a sand and cement-based base coat with the addition of the special alkali-resistant additive AG 15. An alkali-resistant, glass fibre mesh reinforcement must be laid.
The mesh should not be placed directly on the wall, but embedded in the surface of the render. In order to obtain a good quality render and to avoid excessive material consumption, it is advisable to pay attention to the execution of the walls; the joints between the bricks must be well filled, any holes or breaks in the wall must be previously treated, the door frames must protrude a few millimetres. In order to respect the perfect verticality of the walls, it is advisable to use corner brackets or rulers on the corners and vertical guides on the walls.

Material preparation

KS 9 is applied with plastering machines such as FASSA, PFT, PUTZKNECHT, PUTZMEISTER, TURBOSOL or similar. It is applied in a single coat up to a thickness of 20 mm from the bottom upwards and then straightened with H-shaped or knife rules in horizontal and vertical strokes until a smooth surface is obtained. For thicknesses greater than 20 mm, the render must be applied in several successive coats, at least 1 day apart.
of at least 1 day apart, always taking care to roughen the surface of the substrate. The mortar, after mixing with water, must be applied within two hours. The surface processing of the plaster (trowelling, scraping, etc.) should be carried out within 1.5-4 hours after application, depending on the environmental conditions and the type of surface.
For exterior applications, in order to obtain a homogeneous and compact surface suitable to support finishes such as high thickness coatings, it is advisable to finish the render with plastic or wooden trowels; in the case of application of paints on the surface it is advisable to use the IP 10 finishing render available in 1 mm particle size. In interiors, the finishing of the walls is completed by applying, when the plaster is completely hardened,
Malta Fina" type materials (fine lime mortar), smoothing, mineral-based wall coverings, etc. A more rustic finish (in environments such as garages, cellars, etc.) can be carried out directly with the same product using plastic, sponge or wooden trowels.

Technical data

Specific weight of powder approx. 1.400 kg/m³.
Application thickness min. 10 mm
Particle size < 1.5 mm
Mixing water approx. 23%.
Coverage approx. 13.3 kg/m² at a thickness of 10 mm
Shrinkage approx. 0.08 mm/m².
Density of hardened plaster approx. 1.530 kg/m³
Compressive strength at 28 days (EN 13279-2) approx. 1.5 N/mm².
Flexural strength at 28 days (EN 13279-2) approx. 0.8 N/mm².
Modulus of elasticity approx. 2.500 N/mm².
Vapour diffusion resistance factor (EN 1015-19) μ ≤ 12 (measured value)
Coefficient of capillary water absorption (EN 1015-18) W0
Coefficient of thermal conductivity (EN 1745) λ = 0.55 W/m∙K (tabulated value)
In accordance with EN 998-1

Presentation

Special bags with moisture protection of approx. 25 kg