Original Meldorfer®

Suitable Substrates

External thermal insulation composite systems:
- Finished, hardened base coat according to selected approval.

Prime cementitious substrates (also mineral base coats) with Putzgrund 610 to largely exclude efflorescence.

Mineral substrates made of:
- Mortar group PII, PIII according to DIN V 18550, etc.
- concrete
- load-bearing mineral old render and coatings
- gypsum plasterboard or base coats of mortar group PIV + V indoors

Substrate Preparation

The substrate must be even, clean, dry, solid, load-bearing and free of separating or adhesion-reducing residues or substances. Impurities and substances with a separating effect (e.g. formwork oil) as well as protruding mortar burrs must be removed. Damaged, flaking paintwork and decorative renders must be removed as far as possible. Hollow areas of rendering must be knocked off and rendered flush with the surface.

Highly absorbent, sanding or flouring surfaces must be thoroughly cleaned and primed until they are solid.

The compatibility of any existing coatings with the adhesive must be expertly checked.

Application Conditions

During The application and in the drying phase, the ambient and substrate temperatures must not be below +5 °C and above +30 °C.

Do not apply in direct sunlight, strong wind, fog or high humidity. In this context, we refer to the leaflet "Verputzen, Wärmedämmen, Spachteln, Beschichten bei hohen und tiefen Temperaturen" (Rendering, Thermal Insulation, Filling, Coating at High and Low Temperatures) from the Bundesverband Ausbau und Fassade (Federal Association for Finishing and Facades).

Drying/Drying Time

Tool Cleaning

Immediately after use with water.

Laying and Jointing

Preparatory work
Original Meldorfer^® is a hand-formed, individually manufactured product for which colour differences and dimensional tolerances must be taken into account. Some colour shades of Original Meldorfer^® are made up of graduated colour nuances. To achieve a play of colours on the surface, the different shades must be pre-mixed well with each other. To avoid the concentration of individual colour shades and any dimensional tolerances, the Original Meldorfer^® tiles must therefore be mixed when the layers are removed from the cardboard and laid.

Due to the use of natural aggregates, slight differences in colour shade are possible. Therefore, ensure that the production numbers are the same.

Divide the areas to be laid evenly with continuous height markings (cord markings) to determine work steps:

When dividing the façade for an even installation of Original Meldorfer^®, observe the fixed lines (e.g. windows, doors, roll layers, etc.) and use them as a starting point for dividing the façade. Slight shifts in dimensions can be taken into account when dividing the height.

Applying
Original Meldorfer^® is best applied from top to bottom, starting with the corner facing bricks.

Capatect Meldorfer^® Ansatzmörtel 080 must always be applied in strips within the height markings and combed through in the direction of laying with the Meldorfer^® notched trowel 098 (toothing 4 x 6 mm). When applying the large format (GF), use a toothed trowel 6 x 6 mm.

The individual Original Meldorfer^® should be pressed firmly into the mortar with a pushing motion so that no hollow layers are created. Only as much mortar should be applied as can be laid immediately before the skin forms. Care must be taken to ensure an exact division between stretcher and binder arrangement.

With the "Sandstein" (sandstone) colour, a harmonious surface design can be achieved with a regular or random combination of the different formats and corresponding cuts. Preferably, the three sandstone colours grey, yellow and red should be mixed with each other.

Joints
Afterwards, the mortar should be spread evenly in the joint area with a wet 10 mm flat brush and worked onto the flanks of the Original Meldorfer^®. The transitions of the adhesive mortar to the Original Meldorfer^® must be tightly sealed to prevent water from migrating behind.

If desired, the Original Meldorfer^® can also be given an additional full jointing with Capatect Meldorfer^® Fugenmörtel 081. To improve the adhesion of the materials to each other by means of mechanical bonding, it is recommended to leave the serration of the (Capatect Meldorfer^® Ansatzmörtel 080) in the joints.

Allow any excess material to dry slightly and brush the surface with a hand brush or similar to remove any loose mortar.

In the case of dense, cool substrates or if drying is delayed due to weather conditions, auxiliary substances may reach the surface of the coating due to moisture exposure (rain, dew, mist). The effect depends on the intensity of the colour shade. These auxiliary substances are water-soluble and are removed independently with sufficient water, e.g. after further weathering. The quality of the dried coating is not adversely affected by this.

Please Note (Status as at Date of Publication)

Assessments and Approvals:
German:
Z-33.41-130      Z-33.42-132       Z-33.43-133
Z-33.47-859      Z-33.42-1739     
European:
ETA-07/0184     ETA-10/0436      ETA-12/0383
ETA-11/0300     ETA-13/0890      ETA-13/0891
ETA-13/0289

Disposal

Customer Service Centre

Technical information

• Technical Information No. 071

Technical information

• Technical Information No. 071