ᐅ Reinforcement mesh on discolored insulation?

Hello,

I built a house in 2006-2007, doing all the work myself with friends and family. Unfortunately, I became seriously ill during the construction period and couldn’t finish the build. I was bedridden for many years and was only recently operated on. Now I am feeling relatively well again, but I have a problem with the exterior wall. When I fell ill, we had just reached the stage of insulating the house.

The insulation (12cm (5 inches)) had been applied to the bricks, and one side of the house was completed with the reinforcing mesh. The remaining walls were exposed to the weather for several years. The insulation has now turned yellow instead of remaining white. I’m wondering if I can still apply the reinforcing mesh onto the insulation and later add the plaster, or if the insulation needs to be completely replaced?

I hope I was able to explain myself clearly ;-)

Normally, something like this shouldn’t be a problem, but I would apply a primer beforehand that can both bind dirt and dust and also improve the adhesion of the plaster. Of course, you should first check whether a lot of moisture has gotten behind the insulation, as that would be more problematic.

I also believe that there should be no issues here, as long as the insulation is still firmly attached to the wall and no water has gotten behind it. As Paule mentions, clean, apply primer, and plaster.

I don’t think that will be an issue. The insulation needs to be firmly fixed. Then apply a primer and apply the plaster. Everything should go smoothly this way.

A friend had a similar situation, and it worked well. It is important that no water gets behind it. Otherwise, there can be major problems.

Yes, I have experienced that as well, and I was also lucky that no water got behind the insulation. This allowed the insulation to stay in place, and I applied a primer. After that, the new plaster was applied.