Cellar renovation – How to proceed best?

  • Erstellt am 2013-01-12 16:42:09

Pluto-1

2013-01-12 16:42:09
  • #1
Hello dear forum members,

We want to replaster the basement of our old building (1927) and use parts of it as living space. The drainage around the house is fine, the old interior plaster is very uneven but still solid, the rock underneath is unknown to us. The humidity in the basement is between 60-75%. Question: Can we simply replaster the walls, let the rooms dry, and then use them as living space? Should we better apply insulation? If yes, which one? Which plaster is suitable?
 

MODERATOR

2013-01-21 17:06:01
  • #2
Hello Pluto,
without having examined the walls on site, one cannot advise anything. If the rooms are not noticeably damp (does paper/cardboard stored in the rooms deform?), nothing stands in the way of conversion for residential use.

However, with residential use, the relative humidity would increase further; you need a good ventilation option there.

You should not insulate the walls - at least not from the inside; the relatively high humidity is caused by diffusion from outside to inside through the exterior walls. As long as this water vapor can be ventilated, it is not that bad; interior insulation would probably lead to moisture problems between the wall and the insulation.

For interior plaster, use a completely normal gypsum plaster.
 

seiler-1

2014-05-01 09:29:08
  • #3
Do not install insulation and a good ventilation system must be installed here. Complete systems are available for this purpose. Then nothing stands in the way of usage. Plaster the walls as usual.
 

Dario-1

2014-06-03 12:00:18
  • #4
Such a gypsum plaster is a good option. This plaster is also used in the bathroom. This gypsum plaster is somewhat more expensive but absorbs water well.
 

Ricardo-1

2014-06-10 07:52:53
  • #5
I am not convinced by this gypsum plaster. Especially when there is high humidity in the basement, this type of plaster is wrong. I use lime-cement plaster.
 

Nina-1

2015-01-24 11:28:26
  • #6
Hi.

A basement renovation is really trendy nowadays. Every room is needed, especially when the children get older, which is often the case. My husband wants to set up his fitness room in the basement. So the basement is being renovated as well.

He has now started and applied the gypsum plaster. A connection is not necessary. Beforehand, he installed a small window, which is exactly where the stairs are. That should also be sufficient for ventilation. It all looks pretty good already. :):)

Kind regards
 

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