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Rising damp in masonry over a period of time can lead to considerable damage. Indication of damage are salt efflorescence, flaking plaster, rotting wall-paper and the formation of mould which can be harmful to health. Using a patented system an anti-rot and permanently flexible synthetic resin is injected into the masonry. Thus a subsequent horizontal barrier is installed and moisture rising via the capillaries is successfully stopped.
2 Accessories
KÖSTER Suction Angle
3 Cross section waterproofing
KÖSTER Crisin 76
4 Primer / Levelling
KÖSTER Polysil TG 500
7 Plaster
KÖSTER Restoration Plaster 1 Grey
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 also has a hydrophobizing effect.
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 analyses 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 diffusion and are hydrophobic. Salts remaining in the wall are absorbed by the KÖSTER Restoration Plasters so the 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 2 White is often used in older buildings without subsequent painting. KÖSTER Plaster Coat creates a very smooth 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) paints such as KÖSTER Silicon Paint White or KÖSTER MF1.
Always adhere to the specifications in the respective Technical Guidelines.
2 Installing the horizontal barrier via injection
KÖSTER Mautrol 2C
KÖSTER Mautrol Flex 2C
3 Pump
KÖSTER 1C Injection Pump
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 with KÖSTER Borehole Suspension. After filling, the borehole is re-drilled.
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.
In cases where damage is caused by rising moisture the old plaster has to be removed from the wall. After the installation of a 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 diffusion and are hydrophobic. Salts remaining in the wall are absorbed by the KÖSTER Restoration Plasters so the 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 2 White is often used in older buildings without subsequent painting. KÖSTER Plaster Coat creates a very smooth 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) paints such as KÖSTER Silicon Paint White or KÖSTER MF1.
Always adhere to the specifications in the respective Technical Guidelines.
