Baudenkmalpflege Bauch

Restaurierung und Spezialarbeiten

Konzeption – Betreuung – Dokumentation

Appraisal Reports

Plaster Cracks and Peeling in Interior Lime Plastering

We assessed that the plaster cracks and peeling were of a two-coated plastering from cement-lime mortar. Under the scale-like stripping was a white undercoat, which we recognized as porous contamination. We tested the properties in regards to the binding agent, grading curve, and composition. Causes of the damage: 
     -The undercoat was made locally as a mixture for the construction site.
     -This showed that the used fat lime hydrate was contaminated.
     -The reaction of the unslaked lime, respectively, the contamination, brings about the so-called lime dispersion.
     -This reaction is connected to volume increasion, which causes the scale-like peeling of plaster.
Judging from the number and size of the cracks in the plaster, we proved that there was no diffiency.

Restoration Recommendations for Wooden Window Frames

Within a few years, the wooden window frames on more newly constructed buildings were gravely damaged until single wood construction pieces appeared. The objective target of the expert assessment was to establish the cause of damage and to draft a recommendation for its restoration.

Mould Formation on Wall Coating

In line with a survey was the statement about mould formation as a result of a diffusion inhibited wall coating. After on-site checks of the mould formation, the asserted regions could not be determined.

Reworking of a Monochromic Wall Frame

The crack formation on the wall surface of a door passage and the total design quality of the interior plaster was assessed. Supposedly a replacement frame was installed over a torn apart region of the wall which couldn't be accounted for.

Increased Humidity

In reference to newly constructed offices, after weeks of use, an increase in relative air humidity was detected. A private appraiser ascertained the cause, and the responsible building contractor was called out to evaluate the revision of his service.

Crack damage as a result of compression

In a family house there was work to do because of compression. Sound judgement raised the question as to whether or not the work of compression was actually a factor of the damage. In addition to the damage on the house's plaster facade, there was damage to the floor, and the brickwork in the cellar was misaligned.

The surface of this piece of wood paneling from larch wood was reconditioned with a waterbased acrylic weather protection paint. Shortly after the completion of this work, a definate area of the wood paneling suffered from massive blistering. The objective of the expert's report is to investigate the cause of the blistering and to prepare a cost effective restoration proposal. After a chemical analysis of the emissions contents of the wood, an examination with an incident-light microscope, and a measurement of the surface temperature and humidity content of the wood paneling, we could determine the causes:
     -There were higher resin contents in the larch wood with emissions contents in the wood.
     -Surface temperatures (122°F) rose due to the dark color tones.
     -There was moderate adhesion due to the smooth surface plane, indicated by means of a grid-cutting test.
     -And there was no fluctuation in the wood's humidity contents.


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