Bank guarantee from the roofer due to defects in the roof

Hello everyone.

There are slight problems with our roof and the company carrying out the work. After 3 attempts to repair various defects (faulty underlay membrane, holes in the roof filled with expanding foam, missing clip brackets, etc.) everything is now repaired and done. EXCEPT for the storm clips. These were not installed professionally and according to the appropriate laying pattern, but were placed randomly.

Since the scaffolding is finally going to be dismantled (it is obstructing the earthworks by the utility providers), we have now agreed with our construction supervisor that the roofing company will give us a €2000 discount and provide a guarantee bond of a further €2000, which covers the warranty period of 5 years.

What exactly should I imagine such a guarantee bond to be? How is something like this set up and does it have any disadvantages for me? Will this appear on MY credit report? Unfortunately, I have absolutely no idea what this means! Above all, what does our lending bank think about this? Do they even find out about it?

I am a bit at a loss right now...

If the work is not carried out correctly, it must be corrected. Otherwise, the inheritance is of little help...

Otherwise: A guarantee that one receives is basically positive. There is also nothing registered in your Schufa (the received guarantee is not a "liability," but rather a "credit"). Nothing is invested there; it is only a payment promise from the bank (with conditions). Your bank does not get involved in this.

Otherwise, the introductory sentence applies...

What should I imagine under such a guarantee now?

Property. A piece of paper that is like cash for you and lies around with you. Nothing more and nothing less.

and then after 5 years? you realize that there is water in the cavity...

It is EXCLUSIVELY about the storm clipping. Everything else has been properly fixed.

And why is this not being fixed as well?