If historic building structures can not be protected by subsequent sealing against moisture and efflores-cence, the moisture regulation render "Exzellent" from MC Bauchemie is a sound solution. The building substance of the Carmelite monastery in Frankfurt on the Main consists of partly stuccoed rubble masonry. It shows heavy moisture penetration due to missing horizontal and vertical barrier layers, along with efflorescence attributed to high salt concentra-tions. The restoration ext
"Beverweerd", the historic castle in the catchment area of Utrecht now fitted with the right materials will last for centuries more.
Conventional render systems failed on this historic building structure from the 13th Century. Now, a tried and tested moisture regulating render which allows for an up to 15-times higher evaporation performance looks promising.
