ᐅ Painting Concrete Walls and Lime Plaster in the Basement Yourself – Preparations?
Created on: 13 Jul 2017 16:13
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AndreasPlüA
AndreasPlü13 Jul 2017 16:13Hello,
this weekend I plan to paint three basement rooms in our new build as a DIY project.
The walls are made of concrete (watertight concrete) and lime plaster. The ceilings are reinforced concrete and have already been skimmed.
My planned procedure is as follows:
- Sand the concrete walls
- Brush the walls with a stiff broom to remove dust
- Lay protective fleece on the floor
- Mask light switches, exposed electrical wiring, windows, etc., covering them with plastic sheeting and sealing the edges with tape
- Then start painting the ceilings, first the corners with a brush, then the surface, working in square sections and painting each square in a crisscross pattern
- Then paint the walls, working away from the light source
- Repaint the lime plaster walls without sanding
- Probably apply a second coat as well.
Am I on the right track with this, or is it going to turn out badly?
this weekend I plan to paint three basement rooms in our new build as a DIY project.
The walls are made of concrete (watertight concrete) and lime plaster. The ceilings are reinforced concrete and have already been skimmed.
My planned procedure is as follows:
- Sand the concrete walls
- Brush the walls with a stiff broom to remove dust
- Lay protective fleece on the floor
- Mask light switches, exposed electrical wiring, windows, etc., covering them with plastic sheeting and sealing the edges with tape
- Then start painting the ceilings, first the corners with a brush, then the surface, working in square sections and painting each square in a crisscross pattern
- Then paint the walls, working away from the light source
- Repaint the lime plaster walls without sanding
- Probably apply a second coat as well.
Am I on the right track with this, or is it going to turn out badly?
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AndreasPlü13 Jul 2017 16:33Nordlys schrieb:
Primer. First primer. Otherwise, it will peel off again. KarstenThanks for the tip. I just looked into the substrate preparation. It states here
"Plasters of mortar group PII and PIII/compressive strength according to DIN EN 998-1 with at least 1.5 N/mm2: Coat solid, normally absorbent plasters without pre-treatment. On coarse porous, sandy, absorbent plasters, apply a primer coat with OptiGrund or CapaSol."
or
"Concrete: Remove any existing release agent residues as well as chalking, sandy substances."
As I said, the non-concrete walls have a sprayed lime-cement plaster. Is priming still necessary?
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AndreasPlü14 Jul 2017 09:03Ok, in the Caparol product information for the corresponding primer it says "For professional use only. Can cause serious injury or be fatal if inhaled. Etc." That doesn’t sound very good. Can I use a different primer, for example one from a hardware store?
I also read somewhere that the first coat can be diluted with 10-20% water, which is supposed to replace the primer (?).
Additionally, I found a small wall made of solid gypsum boards. I assume I need to apply a primer there, or is there another option?
I also read somewhere that the first coat can be diluted with 10-20% water, which is supposed to replace the primer (?).
Additionally, I found a small wall made of solid gypsum boards. I assume I need to apply a primer there, or is there another option?