Hello everyone,
this seems to be a somewhat unusual question, at least my search on the topic didn’t yield any results, even on Google. Here is my situation:
Our house itself is finished, and the exterior plaster is also completely done. Now we are planning the outdoor area. At one spot, we want to raise the ground level higher than originally planned. Because of this, part of the plastered wall will be buried underground.
Now to the question:
Is it sufficient to install the typical dimpled membrane (dimple board) between the soil and the wall, directly on the already finished plaster, to protect the wall from moisture? Or would it be better to apply a bitumen coating on the plaster first?
Regards,
Toni
this seems to be a somewhat unusual question, at least my search on the topic didn’t yield any results, even on Google. Here is my situation:
Our house itself is finished, and the exterior plaster is also completely done. Now we are planning the outdoor area. At one spot, we want to raise the ground level higher than originally planned. Because of this, part of the plastered wall will be buried underground.
Now to the question:
Is it sufficient to install the typical dimpled membrane (dimple board) between the soil and the wall, directly on the already finished plaster, to protect the wall from moisture? Or would it be better to apply a bitumen coating on the plaster first?
Regards,
Toni
That already looks like a waterproofing material such as a base waterproofing layer rather than a bitumen coating. However, I also think it will work. Pay attention to the details, meaning to seal deeply enough and apply a sufficiently thick layer everywhere. Of course, this is not really professional or according to textbook standards, but I often see plaster directly on the base without any waterproofing, where damage occurs simply because no consideration was given. Ideally, waterproof a bit higher, in line with the height of any backfill. The bitumen coating is not really ideal here because of its appearance. A dimpled membrane and possibly insulation boards, as described earlier, are sensible since the plaster is probably somewhat more prone to damage (as it is not a proper base plaster).