Which moldings and how should they be attached?

[Stefan N]

Only nail into concrete? Then you have to hit quite well....

 

[hul]

Just nailing into concrete? Then you have to hit pretty hard....

Molding nails for concrete are among the most commonly used.

 

[twoody]

Take Styrofoam moldings and install with latex caulk

 

[Gnagare i Bajenhöjden]

Why moldings if both walls and ceiling are concrete? Usually not needed then.

 

[TheGame]

Why moldings if both walls and ceiling are in concrete? Usually not needed then.

Exactly, ceiling moldings are ugly.

 

[SBH]

Why add moldings if both the walls and ceiling are made of concrete? Usually not necessary then.

because it looks nicer with ceiling moldings. You get rid of the box feeling a bit.
then it can crack at the meeting of the ceiling and wall even when it's concrete.

 

[Peter_K]

Paint the ceiling trim in the same color as the ceiling. I think it looks really weird with a matte ceiling and a glossy white trim that's probably painted with S0502Y if we're talking about pre-painted trims.

 

[Gnagare i Bajenhöjden]

because it looks nicer with a cornice. it reduces the boxy feeling.
then it can crack at the ceiling and wall joint even when it's concrete

In my eyes, cornices are a necessary evil in wooden houses. In a stone house, they just look silly.

 

[twoody]

Exactly, ceiling moldings are ugly.

No, that's your opinion and you have bad taste. 😄

 

[Haas84]

We want to install crown molding to create a smoother edge since the walls and ceiling are in different colors, and it feels a bit like a box, as someone mentioned earlier.

Sounds like Styrofoam might be the better option if you don't need to paint them.