Repair aerated concrete

[xely]

Before laying the floor, I have started to pry away the baseboards. Unfortunately, the underlying light concrete has crumbled in some places, including an outer corner (see image). How do I best repair this?

 

[corre]

Husfix is good for minor damages
https://www.bauhaus.se/casco-husfix-2-5kg.html

 

[ZipLock]

I usually use plaster render.

 

[xely]

I am really a beginner in the field, so I'll take the opportunity to ask. Should I remove all the loose parts and start building a new corner again, or should I keep the larger pieces and try to "glue" them back with plaster /husfix?

 

[corre]

Do as you wish, it probably varies from case to case. If you need existing bits, you will probably have to do it in two steps, 1. Glue the piece in place, 2. Smooth the surface after drying step 1.

 

[Byurn]

The times I have fixed it, I have "glued" with husfix, i.e., reused the large pieces. It's just a cosmetic repair anyway, and it goes faster and uses less husfix if you reuse the pieces.

Then you often have to finish by puttying the surfaces.

 

[Trattkantarell]

May I ask how it went? We are facing the exact same task now and are scratching our heads a bit over how to get the corner right and how to prevent the house fixture from "sliding" down onto the floor.

 

[Johan456]

I say as I usually do, plaster! I have repaired similar and even bigger things with it. Maybe it's easier with other material, I don't know, but plaster is easy to work with.