Editing the plinth at the garage and sidewalk boundary

Hello everyone,

I have already gathered a lot of information here, but now I really have to ask a question.

The paint on my garage is peeling off, and I want to apply new paint before winter. I was able to remove the loose parts with a putty knife, but there are still some paint residues left that are holding quite well. The paint is quite thick, I estimate about half a millimeter to one millimeter thick. I think it’s just regular base paint, which is probably a bit thicker? When I scraped it off, large pieces of paint came off, and there were even little critters underneath. Anyway, I’m not sure now whether I can just paint over it and what it looks like if there are still old paint spots here and there? I probably shouldn’t use the pressure washer, but somehow I have to clean it before painting. There is also quite a bit of moss further down. I have the same problem with the base of the fence by the sidewalk. I would like to paint the garage at the same time. It also has some peeling spots and cracks, but in part, the paint is still holding up quite well.

I would like to know how you would handle this? It doesn’t have to look nice but should be practical to protect the plaster as well as the stone. By the way, the plaster is slightly sandy but still firm.

I’ve attached some pictures.

if the plaster is slightly sandy, it will also absorb water.
[socke] should be made of cement plaster, so remove everything that is not really solid and repair any defects accordingly.
treat old plaster with a consolidating primer.
to make the plaster properly waterproof afterwards, use an organic filler for sealing.
you can then paint over it with [sockelfarbe].

Alternatively. Remove everything in the base area and apply two coats of sealing slurry. Please mix it so that it can be brushed on, not too stiff, more like thick pea soup. Twice for sufficient layer thickness. This is the most cost-effective option.

Hello, thanks in advance for the information. You both say that the old paint in the base area has to come off, what is the best way to do this without significantly damaging the plaster?

: Can the sealing slurry also be applied to the plaster or does the plaster also have to come off? Could you also just paint over the spots where the paint still adheres quite well or would that then be ineffective?

Regards,

Nik

Dichtschlämme can (should?) be applied on plaster and is even crack-bridging. However, it adheres extremely well, the plaster must be solid. And with a smooth substrate, you will do yourself a big favor.

OK, I can see the paint has to come off :-( I don't know how I'm supposed to manage that since it's really still stuck in places. I don't know if the pressure washer is the right tool for this? The demolition hammer is probably too rough here and would probably destroy the plaster. Maybe a multi-tool? Could the plaster possibly become firmer if pre-treated with a bonding primer or something similar?