Hello building professionals,
we are fully renovating a single-family house of the EW65 type.
In October 2021, the entire roof was replaced, including reinforcing the roof structure and installing Steico® boards for insulation. All zinc gutters and downspouts were also replaced.
However, only a few weeks after installation, heavy stains appeared on these gutters and downspouts – see attached pictures. The bends and elbows are particularly affected.
I reported this issue immediately to the contractor. The response was not very satisfactory: “It’s true that downspouts develop patina at different rates, which is not very attractive […] but it will eventually even out.”
Winter weather conditions prevented any action at the time, but now in early summer I would like to address this again. I have a newly replaced roof with a roof exit, heating boiler vent, etc., but these really unsightly gutters and downspouts remain – for me, this is unacceptable since I have never seen this with a newly replaced roof.
Now my question(s): Is this a material defect, or what is causing these stains?
Is this issue covered under the roofer’s warranty?
Best regards.
we are fully renovating a single-family house of the EW65 type.
In October 2021, the entire roof was replaced, including reinforcing the roof structure and installing Steico® boards for insulation. All zinc gutters and downspouts were also replaced.
However, only a few weeks after installation, heavy stains appeared on these gutters and downspouts – see attached pictures. The bends and elbows are particularly affected.
I reported this issue immediately to the contractor. The response was not very satisfactory: “It’s true that downspouts develop patina at different rates, which is not very attractive […] but it will eventually even out.”
Winter weather conditions prevented any action at the time, but now in early summer I would like to address this again. I have a newly replaced roof with a roof exit, heating boiler vent, etc., but these really unsightly gutters and downspouts remain – for me, this is unacceptable since I have never seen this with a newly replaced roof.
Now my question(s): Is this a material defect, or what is causing these stains?
Is this issue covered under the roofer’s warranty?
Best regards.
B
Benutzer 100131 May 2022 08:49Neubau2022 schrieb:
Or paint after oxidation.Most likely, the coating will then come off.N
Neubau202231 May 2022 09:46Offtopic schrieb:
The layer will probably come off then.According to the roofers who were at our place, you should wait until the gutter is fully oxidized before painting it.