Rising moisture in masonry over a long period of time can lead to considerable damages. An indication of these damages is salt efflorescence, flaking plaster, moist wallpaper and the formation of mold which can be harmful. KÖSTER horizontal barriers stop rising moisture in new construction and existing buildings to protect the valuable building substance.

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Horizontal barriers with pressureless injection system KÖSTER Crisin 76

Rising (or “wicking”) moisture is among the most frequently encountered causes of damage in masonry walls. The results are clearly identifiable through the spalling of plaster, damaged joints and bricks, and also through salt efflorescence and algae growth. Damage from rising moisture can be avoided by the installation of a horizontal barrier.

The easiest and most successful KÖSTER system to install a horizontal barrier in existing walls is the KÖSTER Suction Angle System with KÖSTER Crisin 76. KÖSTER Crisin 76 is a very thin fluid resin which penetrates into the smallest capillaries in the building material, stops the capillary action permanently and creates a hydrophobizing effect within the structure.

Boreholes are drilled regularly spaced depending on the wall thickness. KÖSTER Crisin 76 is injected without pressure into the wall via the KÖSTER Suction Angle and the KÖSTER Capillary Rod which acts as a wick. The pressureless system uses the same capillary action which is the cause for rising damp. Thereby, rising moisture is stopped with the aid of its cause. The big advantage of the KÖSTER Capillary Rod is that it doesn’t waste material in cracks or voids. Only where the rod touches the wall of the borehole will the material be released.

In some cases, such as in less moist walls, KÖSTER Mautrol Liquid Sealant can also be applied. Before the application, an analysis of the moisture content and the salt content must be carried out.

In cases where damage is caused by rising moisture the old plaster has to be removed from the wall. After the installation of the horizontal barrier the application of KÖSTER Restoration Plaster is required. KÖSTER Restoration Plaster allows the masonry to dry without damage. KÖSTER Restoration plasters are open to vapor diffusion and are hydrophobic. Salts remaining in the wall are absorbed by the KÖSTER Restoration Plasters so that salt doesn’t effloresce to the surface and doesn’t cause damage to the plaster or paint.

KÖSTER Restoration Plasters are available in different varieties (grey, white, fast and light). KÖSTER Restoration Plaster White is often used in older buildings without subsequent painting. KÖSTER Fine Plaster creates a smooth decorative surface and can be applied when desired to meet architectural goals. KÖSTER Restoration Plasters can only be painted over with breathable (open to vapor diffusion) paint such as KÖSTER Silicone Paint White.

Always adhere to the specifications in the respective Technical Guidelines.

Horizontal barriers with pressureless injection system KÖSTER Crisin Cream

Rising (or “wicking”) moisture is among the most frequently encountered causes of damage in masonry walls. The results are clearly identifiable through the spalling of plaster, damaged joints and bricks, and also through salt efflorescence and algae growth. Damage from rising moisture can be avoided by the installation of a horizontal barrier.

KÖSTER Crisin Cream is a very thin resin which penetrates into the smallest capillaries in the building material, stops the capillary action permanently and creates a hydrophobizing effect. KÖSTER Crisin Cream can be applied from inside and/or from the outside of the building. It is suitable in cases of high degrees of moisture penetration (95% +/- 5% saturation) and with all degrees of salt contamination.

In cases where damage is caused by rising moisture, the old plaster has to be removed from the wall. After the installation of the horizontal barrier, the application of KÖSTER Restoration Plaster is required. The KÖSTER Restoration Plaster allows the masonry to dry without damage. KÖSTER Restoration plasters are open to vapor diffusion and are hydrophobic. Salts remaining in the wall are absorbed by the KÖSTER Restoration Plasters so that salt doesn’t effloresce to the surface and doesn’t cause damage to the plaster or paint.

KÖSTER Restoration Plasters are available in different varieties (grey, white, fast and light). KÖSTER Restoration Plaster White is often used in older buildings without subsequent painting. KÖSTER Fine Plaster creates a smooth decorative surface and can be applied when desired to meet architectural goals. KÖSTER Restoration Plasters can only be painted over with breathable (open to vapor diffusion) paint such as KÖSTER Silicone Paint White.

Always adhere to the specifications in the respective Technical Guidelines.

Horizontal barriers with pressure injection for voidless masonry

Fast and effective: The installation of a horizontal barrier via pressurized injection. When it is possible to ensure that the wall is free of cracks or voids, the horizontal barrier can be installed with a pressurized injection system. Cracks and voids which become apparent during the drilling process can be filled. After filling, the borehole is re-drilled and the injection process can proceed.

Suitable injection liquids for this kind of application are KÖSTER Mautrol 2C and KÖSTER Mautrol Flex 2C. Two component materials have a faster setting time which causes a quicker blockage of the capillaries. The injection can be carried out with the electrical 1C injection pump KÖSTER 1C Injection Pump.

In cases where damage is caused by rising moisture, the old plaster has to be removed from the wall. After the installation of the horizontal barrier, the application of KÖSTER Restoration Plaster is required. The KÖSTER Restoration Plaster allows the masonry to dry without damage. KÖSTER Restoration plasters are open to vapor diffusion and are hydrophobic. Salts remaining in the wall are absorbed by the KÖSTER Restoration Plasters so that salt doesn’t effloresce to the surface and doesn’t cause damage to the plaster or paint.

KÖSTER Restoration Plasters are available in different varieties (grey, white, fast and light). KÖSTER Restoration Plaster White is often used in older buildings without subsequent painting. KÖSTER Fine Plaster creates a smooth decorative surface and can be applied when desired to meet architectural goals. KÖSTER Restoration Plasters can only be painted over with breathable (open to vapor diffusion) paint such as KÖSTER Silicone Paint White.

Always adhere to the specifications in the respective Technical Guidelines.

 

 

 

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