Painting over Glossy Slippery Weird Multiple Layer Paint on Concrete Wall

JohnClark

Hi there,

I'm trying to chalkboard paint some concrete walls from a 50s renovation at the back of my home. The walls are layered with multiple coats of paint and are slippery and glossy. The last layer of paint on there peels off like peeling skin after sunburn. The walls are not smooth, it's a bumpy and uneven surface.

I have tested straight on top- goes on ok but a bad brushstroke wipes the paint off again and when dry, scratches off using your fingers. I have tried sanding, makes no difference. I have had advice from a plasterer and was told he had never seen such a surface before.

It looks like I will have to strip the walls back to bare concrete before paint will stick.

a) Has anyone encountered this before?
b) What's the best way to strip walls of multiple layers (I see 4) in a kitchen?

Any help appreciated!

JC

Gymschu

This is one time where pics would help us help you.

sdsester

Sounds like you may have an oil finish reacting to the alkaline nature of the concrete? Pics would help.

JohnClark

Pics attached

Attached Thumbnails

     

joecaption

Suggest going to plan B on this one.
Build out the wall and insulate, add strapping over foam and drywall.
Anything but taking the time to try and removing that paint.
The last paint I would try and use in a basement is chaulk board paint.
To much humity and it may stain or look blotchy .

JohnClark

Additional info:

1. It's not a basement, it's a kitchen (a back extension from existing building). Moisture isn't an issue.
2. There is no plaster layer, just enamel (?) paint on concrete.

Thanks!

joecaption

Sorry about that John, way to many people asking questions about basements on here and I got confused.
All the more reason to be adding some form of insulation on that wall not just try and paint it.

DangerMouse

Location? Chicago?

DM

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conspikuous

I like joes Idea of building the wall out, insulating and going new coverings.

It looks you have a case of waterbase on top of oil base on top of god knows what. A heat gun would be best way I know to remove that many layers, just open up the windows, get some good ventilation and wear a good respirator.