Caulk over primed cinder block wall to fill in grout to create smooth surface
Kassaboo
| Posted in Construction Techniques on
I want to paint a mural on a cinder block wall. I know I need to seal it with exterior acrylic primer (2 coats) but I would like to fill in the grout lines to make a smooth surface to paint on. So the question is, can I fill in the grout indents with caulk and smoothed with a putty knife to acheive this? and will it hold up? I will also paint over it again to seal it after it dries, before painting my mural.
Replies
K
a parge coating (skim coat with mortar) will fill the grout joints as well as the pores in the block.
think of a smooth stucco.
Most good paint stores will sell "Block filler" which will do exactly what you want.
block wall
I like your answer...I will look into that! Thanks
Ya that one scares me, I have watched viedos that show if you don't do it right...too wet...too dry...it will later peal off.
K
Yes, you do have to do it right.
that is the name of the game.