ᐅ Neighbor building house next to garage, neighbor's wall is damp

Created on: 24 Jun 2020 19:42
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untergasse43
Hello,

We are currently in a minor dispute with a neighbor regarding our old house. In this residential area, the houses are built directly adjacent to each other in this pattern: House | Garage | House | Garage | House | Garage, and so on.

Our house with garage has been there for almost 35 years. About 10 years ago, the neighbor built his house adjoining our garage and constructed the joint between our garage and his house wall himself. He used a copper sheet and plenty of silicone for this. The wall is on the weather-exposed side, and for some time now he has been complaining that his interior wall becomes damp during prolonged or heavy rain. However, our adjacent garage wall is completely dry (measured). He, or someone he hired who claims to be an expert, now argues that our garage roof drain is not functioning properly and that water from rain flows exclusively over the edge of our garage roof toward his wall. The drain works perfectly, and neither the roof nor our garage shows any signs of moisture intrusion.

I climbed onto the garage roof to take a look myself. At that time, he placed a copper sheet over the edge of our garage roof and covered it with beige plaster. The picture below shows this. My suspicion is that water is simply seeping in between the plaster and the copper sheet, making him responsible. As I said, our garage wall is completely dry.

What is your opinion on this?


Exterior wall with brown base cladding, sealing compound, and gravel at the foundation.


The “collar” of our garage roof looks like this, for example:

Beige plastered wall with gravel on the roof edge and a metal profile.


Here is how it looks along the entire length:

Close-up side view of the building: gravel on the left, grey metal edge at the foundation, bright sky.


The connection to the neighbor on the other side was done this way, which I believe is better:

Low view of building wall: rough plaster, below it white waterproof membrane at the foundation next to asphalt.
untergasse434 Jul 2020 14:59
Update Meanwhile, an expert has visited. The connection between the neighbor’s house and our garage is not professionally done in any way. An overlapping waterproof membrane should have been used, and the silicone in this area needs to be replaced every two years. The entire metal construction must now be removed and redone.
tomtom794 Jul 2020 16:11
untergasse43 schrieb:

Silicone needs to be replaced every two years in this area.
Silicone shouldn’t be used here at all; it should be a polymer sealant or whatever it’s called.
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HilfeHilfe
4 Jul 2020 17:05
untergasse43 schrieb:

Update: An expert has visited the site by now. The connection between the neighbor’s house and our garage is not professionally done in any respect. It should have been sealed with an overlapping waterproof membrane, and the silicone at this point needs to be replaced every two years. The entire metal construction now needs to be removed and redone.
And who is going to pay? What does the neighbor say?
untergasse435 Jul 2020 18:38
The neighbor hired and paid for the inspector, and he will also cover the repair costs. He was probably not happy about it but will make sure it is done properly. We are not really affected since only his wall got wet.
HausiKlausi5 Jul 2020 23:26
Well, that all sounds very good and like a little lesson in good neighborliness for your colleague. Considering he initially tried to indirectly blame you for the situation, maybe this will help him to develop better relations with others in the future.