ᐅ Which paint is suitable for a damp basement room – can I use modern dispersion paint?
Created on: 28 Apr 2023 09:42
J
jx7
We want to convert a basement room into a pool room. Currently, the walls and ceiling consist of plastered sand-lime brick and concrete, painted with dispersion paint.
- Chemical moisture-resistant paint: doesn’t sound very appealing.
- Lime paint: good moisture and mold protection but not abrasion-resistant.
- Silicate paint: best properties but only works on a mineral substrate, so not over dispersion paint.
- Latex paint: moderate mold protection, moderately breathable.
- Dispersion paint: generally unsuitable for damp rooms.
Silicate paint sounds like the best option.
1) Is there a primer that can be used if you want to paint over dispersion paint?
2) Is it better to have genuine silicate paint mixed and applied by a professional painter? Or is dispersion-silicate paint also acceptable? It has a maximum of 5% organic content. Its properties are somewhat inferior to genuine silicate paint, but it is easier to apply.
3) Or should the dispersion paint be removed beforehand? But that sounds very labor-intensive.
- Chemical moisture-resistant paint: doesn’t sound very appealing.
- Lime paint: good moisture and mold protection but not abrasion-resistant.
- Silicate paint: best properties but only works on a mineral substrate, so not over dispersion paint.
- Latex paint: moderate mold protection, moderately breathable.
- Dispersion paint: generally unsuitable for damp rooms.
Silicate paint sounds like the best option.
1) Is there a primer that can be used if you want to paint over dispersion paint?
2) Is it better to have genuine silicate paint mixed and applied by a professional painter? Or is dispersion-silicate paint also acceptable? It has a maximum of 5% organic content. Its properties are somewhat inferior to genuine silicate paint, but it is easier to apply.
3) Or should the dispersion paint be removed beforehand? But that sounds very labor-intensive.
xMisterDx schrieb:
What kind of plaster was used? If it’s gypsum plaster, you can forget about using pure silicate paint. Silicate doesn’t chemically bond with gypsum.
If you want to take advantage of the breathability of silicate paint, the dispersion-based coating has to be removed first.
Simply applying 1mm (0.04 inches) of liquid silicate and hoping it won’t cause mold—well, not really reliable.
Tiles, yes. But not everywhere, right? It’s supposed to be a pool, not a slaughterhouse. It might be gypsum plaster, I’m not sure.
Do you think applying liquid silicate paint is useless? Or does it have some effect but not as much as real silicate paint on a mineral substrate?
What would be the best solution in our situation, in your opinion?
In any case, the pool dehumidifier plays an important role for us.