sia House – uncomplicated, simple and quick
3 Visible concrete with a perfect surface finish
![Wand aus Sichtbeton mit Bleistiftmarkierung](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/Innenausbau/206.jpg)
![Sichtbetonwand](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/Innenausbau/205.jpg)
1
![](/fileadmin/user_upload/_M1B3230.jpg)
Preparatory steps
- Cover the floor and surroundings
- Sand down any concrete seams until flush, using grinding discs or a diamond milling disc
2
![](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/Innenausbau/208.jpg)
Sanding off
- Key the surface to remove any traces of parting agents
3
![](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/Innenausbau/207.jpg)
Extra fine
- For an extra fine surface, sand with fleece
4
![](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/Innenausbau/209.jpg)
Impregnation (optional)
- The concrete can also be impregnated to protect against stains (e.g. coffee or grease)
![](/fileadmin/user_upload/Schleifloesungen/Systemloesungen/sia-Haus_Bilder_Perfekte_Oberflaeche/Bild_3_Seite_17.jpg)
Visible concrete with a perfect surface finish
![](/fileadmin/user_upload/2020-04-14_11h23_01.png)
Expert tip
If you plan to paint the surface, the concrete surface must be keyed to enable better adhesion. Alternatively, pretreat the surface with an etch primer.