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mazzo04129 Mar 2019 17:27Hello,
we have an old house that is about 300 years old, with exterior walls approximately 60 cm (24 inches) thick.
We recently purchased a moisture meter and found that one exterior wall, up to a height of about 120 cm (47 inches), shows a reading of “100.” In these areas, the plaster also feels hollow underneath and will likely start to crumble over time.
The other exterior walls have readings between 70 and 80.
Around the outside of the house, we have noticed a concrete ring approximately 50 cm (20 inches) wide. This does not appear to be connected to the foundation slab, and in the gap between the slab and this base, we can see some black sealing material protruding slightly. Could it be that the previous owner installed some sort of drainage system there?
The house was unoccupied for more than 10 years, and therefore it was not regularly heated during that time. It used to be an old mill and is otherwise in good condition. In 2003, there was a flood with water reaching about 50 cm (20 inches) inside the house. Is it possible that since then it has never properly dried out?
Under these circumstances, how should or could we achieve stability regarding moisture? Or is it likely that for such an old house in a flood-prone area, this will never fully work?
I need your advice.
Thank you
we have an old house that is about 300 years old, with exterior walls approximately 60 cm (24 inches) thick.
We recently purchased a moisture meter and found that one exterior wall, up to a height of about 120 cm (47 inches), shows a reading of “100.” In these areas, the plaster also feels hollow underneath and will likely start to crumble over time.
The other exterior walls have readings between 70 and 80.
Around the outside of the house, we have noticed a concrete ring approximately 50 cm (20 inches) wide. This does not appear to be connected to the foundation slab, and in the gap between the slab and this base, we can see some black sealing material protruding slightly. Could it be that the previous owner installed some sort of drainage system there?
The house was unoccupied for more than 10 years, and therefore it was not regularly heated during that time. It used to be an old mill and is otherwise in good condition. In 2003, there was a flood with water reaching about 50 cm (20 inches) inside the house. Is it possible that since then it has never properly dried out?
Under these circumstances, how should or could we achieve stability regarding moisture? Or is it likely that for such an old house in a flood-prone area, this will never fully work?
I need your advice.
Thank you
M
mazzo04129 Mar 2019 17:56Sorry, maybe I didn’t express myself clearly:
I measured inside the building (building’s exterior wall).
I used a Trotec BM31 measuring device (measures up to 4cm (1.5 inches) deep into the masonry).
I measured inside the building (building’s exterior wall).
I used a Trotec BM31 measuring device (measures up to 4cm (1.5 inches) deep into the masonry).
Understand this: Three hundred years ago, there were no materials available that allowed for airtight masonry. This must be accepted. If that is the case, then trying to waterproof such buildings today will fail because moisture must be able to enter and exit—the house needs to breathe. Therefore, no dispersion-based paints should be used on the interior, but rather natural mineral paints like Keim. Similarly, no cement-lime plaster should be applied inside; instead, renovation plasters containing shell lime should be used. One must try to imitate the materials used at that time. Then the house will stand for another three hundred years, although the indoor air will always be more humid compared to new buildings, and it will never win any stringent energy efficiency awards such as the KfW "shoot-it-dead" prize. But it will have atmosphere. K.
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Schmatzrübe9 Mar 2019 23:07Lumpi_LE schrieb:
Well, living in something like that basically means accepting uncomfortable conditions or spending a lot of money.What exactly do you mean or refer to?
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