Spengler did a leaky job - wall wet

Hello

We have insulated our house and therefore the plumber had to move our downpipe slightly away from the wall. For this, he installed a 90° branch under the roof to get the pipe about 30cm away from the wall. This branch is located within the insulation and I suspect there is a leak there.

From the outside on the wall, I can see a copper-colored (verdigris) drip edge. Inside, I have a damp wall. A bubble has formed under the plaster and there is mold.

How can I proceed now to have the damage covered? The plumber is liable for his work and actually also for consequential damages – but we have already had some problems with the plumber and I have no reason to believe he will settle the error and consequential damages without complications.

How should I proceed to make it unequivocally clear that he has to cover the damage, can’t get out of it, and that I won’t incur any costs because of it?

I would get an expert and have them confirm and document the damage for me.

That would also be my way.

How should I proceed to make absolutely clear that he has to settle the damage, cannot get out of this situation, and that I incur no costs as a result?

First, the actual cause should be determined. A surveyor can really be a great help in this. Then you should talk to the contractor. He might even fix the defect immediately. If he reacts as you suspect, then demand from him in writing (letter, registered mail, return receipt) to remedy the defect within a reasonable deadline. If this is done and proves to be fruitless, please do not react yourself but take the documents to a specialized construction lawyer and discuss the further course of action with them.

Hello,

How can I proceed now so that the damage is regulated? The roofer is liable for his work and actually also for the consequential damages - but we have already had some problems with the roofer and I have no reason to assume that he will easily settle the error and the consequential damages.

How should I proceed so that it becomes unequivocally clear that he has to cover the damage, that he cannot get out of it, and that it will not cost me anything?

I would like to disagree a little with my predecessors.

Give the roofer the opportunity to make improvements first before you involve an expert. For this, you should write to him with a registered letter (ERSch), explain the situation, and request the repair of the damage. Only if he does not respond after - another letter - should you engage an expert to then proceed along the path described by Voki.

Even if your relationship with the roofer does not seem to be the best, it does not necessarily mean that he will refuse to make improvements outright. Talking people can always be helped ;)

Rhenish regards

I would like to disagree a little with my predecessors.

Resistance is futile. You will be assimilated.