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Historic Building Restoration & Renovation

Find out how the experts restore buildings for the long-term


Over time, buildings begin to age and change due to a number of factors whether it be weather or mechanical damage.


Many buildings require scheduled cleaning to remove dirt and other air pollutants that build up over time (especially on facades that have no water repellent protection e.g. impregnation/paint). Buildings can be cleaned down with cleaning chemicals but sometimes that is not enough.


Over the years salts build up that cannot be removed by cleaning. If the render is replaced in these cases, the undercoat and the top coat must be able to deal with this damage potential as sustainably as possible.

The task of restoration render systems is to ensure a dry and efflorescent plaster surface for a long period and offer the brickwork long-term protection by allowing the salts to be stored in the plaster and therefore removed from the brickwork.

Active principle of the restoration render - single-layer

Relocation of the evaporation level for the moisture in the masonry from the cleaning surface into the render layer. Restoration renders are water repelling and highly breathable at the same time.



Active principle of the restoration render - dual-layer

Salts coming from the masonry are stored without damaging the render. The undercoat render is not water repelling so that, thanks to 50% more pore volume, the salts can penetrate and the render offers enough space to store the salts without causing damage.




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