ᐅ Looking for a solution: Parts of the exterior insulation are coming loose

Hello everyone.

My property is a bungalow.
The ground floor facade is in good condition and has been recently repainted (BauMit Nanopor).

The basement is planned to be worked on in spring.
At the moment, I am leaning towards either applying a single coat with plaster damage repair or completely rebuilding (or possibly adding onto) the basement facade to eliminate the step in the facade.

I have now noticed that the insulation panels on the facade have detached in an area of about 2 square meters (about 21.5 square feet). (See photos)

I am considering at least creating a (temporary) solution until spring by reattaching the facade. I intend to do this by drilling holes through which I can inject adhesive.

What do you think about:
1. The solution itself
2. Its durability
3. As a long-term fix

Thanks a lot! 🙂

You can use a foam gun to pierce the insulation boards and inject PU foam into the gaps between the wall and the polystyrene. This method works well. Just avoid applying too much foam or covering too large areas at once, as the foam can push the boards completely out.

The best approach is to pierce one board multiple times and inject PU foam, then wait for about half an hour. During this time, use a straightedge or a 2-meter (6.5 feet) spirit level to check that the board is not being pushed out, and apply counter-pressure if needed.

After half an hour, move on to the next board and repeat the process. Simply fill the puncture holes again with PU foam.

Yes, that’s roughly how I had pictured it, but I wasn’t sure to what extent this is a durable solution.

If it holds until the next warm period, that will be sufficient.
I will reassess then.

Thank you! 🙂

That will last well beyond the next heating season.
Companies also fix issues like this afterwards, for example, if the anchors are inserted too early due to time constraints and the adhesive comes loose because it hasn't fully cured yet.
The foam sticks extremely well and is absolutely suitable for bonding smaller surfaces.
For larger areas, however, it is too expensive and lacks shape stability.

Everything went really well.
The wall with insulation is solid and now waiting for the new coat of paint.

Another issue has come up on a different side.
The insulation there is fine and firmly in place, but there are two spots where the render on the mesh is damaged and starting to detach. (See picture)

Is there a method to reattach the render to the mesh using adhesive?
I want to avoid removing that section of the wall and reapplying the render.
I can never replicate the pattern exactly, which would result in an uneven surface.