Fixing and painting cement ceiling that has chalk paint on it
#1
07-14-14, 05:23 AM
Join Date: Feb 2014
Posts: 10
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Fixing and painting cement ceiling that has chalk paint on it
Hello, when I was fixing and painting my own room I had a problem in the end when I was painting ceilings with a latex paint - it would not stick in some places and would bubble. What I did was patch up what I needed to patch up and then did 2 coats of some kind of a liquid white primer (like water, just white) to make sure the old ceiling paint won't stick to the roller when I apply the new paint. That didn't happen, but it wouldn't stick in some places like I said, not sure why - after sanding the ceilings I used a bristle brush to clean off the dust off the ceilings and then did the 2 coats of primer. Now I don't want this to happen again in the new room I'm about to fix and paint.
What was I doing wrong?
What was I doing wrong?
#2
07-14-14, 06:07 AM
Cement is an ingredient of concrete and mortar and it is not suitable for use as a ceiling or any purpose alone. Is your ceiling plaster or concrete or stucco or what?
#4
07-14-14, 06:44 AM
Exactly what primer did you use? Was the ceiling previously unpainted? any texture? What is above the ceiling?
Paint [especially latex] doesn't adhere well to chalky or dusty substrates. The surface needs to be cleaned first, when that isn't feasible there are primers that are tailor made for various issues.
Paint [especially latex] doesn't adhere well to chalky or dusty substrates. The surface needs to be cleaned first, when that isn't feasible there are primers that are tailor made for various issues.
#5
07-14-14, 07:12 AM
Join Date: Feb 2014
Posts: 10
Upvotes: 0
Received 0 Upvotes
on
0 Posts
There are no instructions in english but I'm will guess - the primer is based on styrene acrylate (styroacrylat in german). It is white and as thin as water. I hope I got it right.
There is an attic above the ceiling. The very first paint on the ceilings was a chalk paint and then some time later it was painted with a water emulsion (acrylic emulsion?) paint.
There is an attic above the ceiling. The very first paint on the ceilings was a chalk paint and then some time later it was painted with a water emulsion (acrylic emulsion?) paint.
#8
07-14-14, 08:09 AM
Primer/paint won't adhere to dust, if the primer didn't adequately lock down the dust/chalk - the paint will peel. I think the primer you used is normally used over raw concrete. If you have Zinnser products available you might try their Gardz or PeelStop primer. Your local paint store [not a paint dept] is usually a good source of info and coating selection.
#9
07-14-14, 09:23 AM
Join Date: Feb 2014
Posts: 10
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Maybe I should try vacuuming the ceiling instead of just using a bristle brush? Instructions says that it can be used before applying joint compound mud, painting etc. I don't have any of these I'm sure, we mostly have products imported from Europe, rarely any American products.
#11
07-14-14, 09:33 AM
Join Date: Feb 2014
Posts: 10
Upvotes: 0
Received 0 Upvotes
on
0 Posts
I hope that'll do, thanks. I'll probably post some before/after pictures when finish the room.
#12
07-24-14, 01:26 AM
Member
Join Date: Jul 2014
Location: Australia
Posts: 1
Upvotes: 0
Received 0 Upvotes
on
0 Posts
How did you get on?
I've been following this thread on painting your concrete ceiling and wondered how you go on... and wondered if not using concrete paint (and not vacuuming) was the main problem.
I'm interested in painting concrete floors and using paint specifically for floors makes all the difference.
I'm interested in painting concrete floors and using paint specifically for floors makes all the difference.
