We have a split-level house and are currently furnishing the lower floor. We have now installed windows and would like to put stone tiles/slate on the house facade.
The construction looks like this from the outside:
1. Plaster
2. Foam/Styrofoam insulation
3. Lecablock
(now we come to the inside)
4. Air gap of about 5 cm from the lecablock
5. Stone wool
6. Plywood
7. Gypsum
I can also mention that part of the house facade was previously below ground and there was isodrän against the lecablock on what was below ground (where the plaster ends as you can see in the pictures).
I am wondering what the recommendation is for setting slate so that no moisture problems arise in the future. Should there be an air gap on the outside between the plaster and the foam, or can it be set directly against the existing plaster (alternatively knock off the plaster and set the slate directly against the foam)?
If I were to "guess," it should be possible to set stone tiles/slate directly against the plaster or foam since we have an air gap on the inside and the foam (and plaster) don't breathe anyway as far as I know. The house is almost 15 years old and luckily, we have never had any moisture problems so far.
Grateful for any tips, advice, and thoughts you have on this.
The construction looks like this from the outside:
1. Plaster
2. Foam/Styrofoam insulation
3. Lecablock
(now we come to the inside)
4. Air gap of about 5 cm from the lecablock
5. Stone wool
6. Plywood
7. Gypsum
I can also mention that part of the house facade was previously below ground and there was isodrän against the lecablock on what was below ground (where the plaster ends as you can see in the pictures).
I am wondering what the recommendation is for setting slate so that no moisture problems arise in the future. Should there be an air gap on the outside between the plaster and the foam, or can it be set directly against the existing plaster (alternatively knock off the plaster and set the slate directly against the foam)?
If I were to "guess," it should be possible to set stone tiles/slate directly against the plaster or foam since we have an air gap on the inside and the foam (and plaster) don't breathe anyway as far as I know. The house is almost 15 years old and luckily, we have never had any moisture problems so far.
Grateful for any tips, advice, and thoughts you have on this.
