Finnseco Rappauskorjauslaasti

Pumpable or hand-applied, air entrained lime-cement dry mortar. High lime content. Breathable and weather resistant. Max. grain size 3,0 mm.

  • For repairing old plasters
  • Excellent weather resistance

Pumpable or hand-applied, air entrained lime-cement dry mortar. High lime content. Breathable and weather resistant. Max. grain size 3,0 mm.

Product Features

Adhesive and filling mortar for repairing of traditional three coat plastering. Suitable also for finishing rough structured surfaces. Fixing of bricks and brick joints in locations where the wall will be plastered, coated or painted.

Recommended Uses

Residential, commercial, industrial and storage buildings and others.


Consumption: mixed product 13-14 l/25 kg.


Store in a dry place (off the ground), do not get wet.

Application Conditions

The temperature of the ambient air, mortar and substrate must be at least + 5 °C. Working in hot weather, heavy winds and direct sunlight should be avoided.

Surface preparation

PRE-TREATMENT OF SUBSTRATE The substrate to be plastered must be clean and intact. Salt, cement glue, dust and other impurities that weaken adhesion must be removed by steel brushing or chipping hammer. Wash the surfaces with e.g. pressure washer before painting and repairing. Use Tikkurila Homeenpoisto if necessary. Dry substrate must be pre-moistened, since the substrate must be moist and absorbent before plastering. Absorbency can be detected by pressing on the area to be patched with the palm of the hand. If there is clearly noticeable moisture left on the palm, the substrate is still too wet to patch. Wait a moment for moisture to come off the surface. PREPARING THE MORTAR Finnseco Rappauskorjauslaasti is added to clean water and mechanically mixed to an even mass, after which it is let to settle for about 10 minutes before re-mixing and application.


First coat:

ADHESIVE PLASTERING The adhesive plaster is slammed, sprayed, brushed or compacted depending on the size of the patched area. Small fillings less than 15 mm can be completed in one application without a separate filling layer. The adhesive layer should remain rough to ensure good adhesion to the next layer. The adhesive mortar layer should dry for at least one day before filling or plastering. On dense and hard substrates such as concrete, the adhesion of the mortar to the substrate should be improved by adding Finnseco Tartuntalaasti (5 kg pck/25 kg sack). FILLING PLASTER The filling plaster is sprayed with a plastering pump or applied by hand. The thickness of one filling plaster layer is approx. 15 mm. If the layer thickness exceeds 20 mm, the filling must be done in several layers. For large plaster layers over 30 mm thick, the use of a hot-dip galvanized plaster mesh attached to the substrate is recommended. The mesh should also be used on weak and cracked substrates. The filling plaster should be left rough and below the level of the surrounding plaster to the extent required for surface plastering. Any protruding plaster repair clearly stands out from the maintenance-painted wall, especially in the side light. FINISHING PLASTER Finnseco Rappauskorjauslaasti can be left as a finished surface with the desired structure. Finnseco Rappauskorjauslaasti Hieno can also be used to make a smooth, paintable or finer surface structure. The repaired plaster surface should imitate the original surface as closely as possible. Testing and model making is essential to achieve a good end result.

Cleaning of tools

Wash tools immediately after use with water.

For repairing old plasters

Used as an adhesive and filling plaster in the repair of traditional 3-layer plasters. Suitable also for finishing rough structured surfaces. Grain size max. 3.0 mm.

Product usp1prof_img
Man plastering a wall

Excellent weather resistance

Sprayable or hand-applied protective porous lime cement-based dry mortar with high lime content.


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