ᐅ Interior Walls and Ceilings – Differences Between Paint-Ready Fleece and Fiberglass Mesh

We have mineral-based interior plaster on the walls (lime-gypsum plaster as far as I know), which was applied quite well and is really good for Q2-level finishing. The ceilings (beam ceilings) on the ground floor are also very smooth. In the attic, we have drywall panels.

I basically want to keep the walls relatively "open" and use the plaster as a moisture regulator (as far as possible) since we have a solid construction made of Poroton. Now, we have the opportunity to get a painter’s fleece that contains fiberglass. However, it is not a common painter’s fleece but one that is used for lining interior ceiling elements. It also seems fairly "robust." My wife now wants to use it on the walls and ceilings, but I’m not sure if this material is suitable for that purpose.

I’m wondering what exactly makes a painter’s fleece a painter’s fleece? What distinguishes these fleeces from each other? Especially those with fiberglass content. What should I pay attention to when sticking this product to our walls? As a non-professional—regardless of product datasheets (which I unfortunately don’t have)—is there a way for me to test whether the painter’s fleece will negatively affect the indoor climate? I have taken a sample with me.

bauenmk2020 schrieb:

As a non-professional, is there a way to test whether the painter's fleece will negatively affect the indoor climate, regardless of product datasheets (which I unfortunately don’t have)?

Definitely do not use it! Your walls won’t be able to breathe anymore.
Irony off.

Basically, it doesn’t matter at all what you put on your walls. It’s purely a matter of taste – it will not affect the indoor climate.

And which adhesive would be suitable for a fiberglass fleece?

Wallpaper adhesive?

...casually speaking, plastic-reinforced adhesive. If the characteristics of the (semi-) mineral substrate should be preserved, a mineral-based paint should be used. Lime paint or clay paint, for example—there are more options available, but these are the classic choices that always work, come ready-to-use in a container, and are easy to apply. Of course, lime paint must be handled carefully, as it is corrosive.

Best regards
Gabriele

Fiberglass mesh is an alternative to tiles. It is glued with an adhesive primer, then coated with latex paint, making the wall waterproof. Similar to tiles.