Should element ceilings only be filled and sanded, or covered with fleece?

Hello everyone,

have you had experience with joint filling on precast concrete ceilings? An acquaintance said that he didn't do it because sooner or later you get cracks there. He had fleece laid over the entire surface. So first only "roughly filled and sanded" and then a fleece over the entire ceiling.

What have you experienced with what?

Please let me know.

Best regards

A fleece was extensively integrated over the joints and the holes for the ceiling spots. I can hardly imagine that this should make sense for the entire reinforced concrete ceiling.

Stretch the pores of the ceiling long, do the same with the joints, putty and stretch long. Cracks can occur and are not permanently concealed by fleece. I only find it good as described above and painted. But that is a personal feeling. With the fleece, the remaining pores are no longer visible.

lg

Our concrete ceilings are not "fleece-lined". However, I can't really say exactly what the painters did.. in any case, the ceilings are super smooth and after almost four years we haven't discovered any cracks.

We also had a prefab ceiling in the old house, where the usual wooden ceiling was screwed on back then. During a renovation, the joints of the ceiling were then filled with putty. One should note that not only the joints should be filled, but the area around the joints should be extensively smoothed because the ceilings usually don't fit precisely to the millimeter. Maybe I would also incorporate a suitable mesh at the joints, but in my opinion, fleece is not necessary. The ceiling can then be primed and painted, or we applied the paint plaster that we have discussed here multiple times; that fits!

applied the repeatedly discussed scratch plaster here; that fits!

Is that something you use to "plaster" drywall partitions, like Knauf Easyputz?

Yes, painting the ceilings with something like that would also be an alternative, so you don’t have to individually fill all the fine holes of the element ceilings.