ᐅ Is water on a flat garage roof problematic or hazardous?
Created on: 14 Feb 2018 20:20
M
Marchonisch
Good evening
There is always water standing on our garage roof. In my opinion, the drain is incorrectly positioned.
The architect and the structural builder say this is normal and not a defect.
However, my roofer sees it as problematic. He says mold can develop...
What is your opinion or recommendation?
There is always water standing on our garage roof. In my opinion, the drain is incorrectly positioned.
The architect and the structural builder say this is normal and not a defect.
However, my roofer sees it as problematic. He says mold can develop...
What is your opinion or recommendation?
M
Marchonisch16 Feb 2018 09:03That’s why I’m asking how, under these circumstances, the construction of the terrace could or should be designed.
Or is there no way around installing an additional drain?
Or is there no way around installing an additional drain?
K
Knallkörper16 Feb 2018 09:26Bieber0815 schrieb:
Only a specialist construction lawyer can provide proper advice on this!No. The flat roof guideline is publicly accessible and binding. Check the slope. If it’s insufficient, raise an objection. It is clear-cut.
B
Bieber081516 Feb 2018 13:45Marchonisch schrieb:
That’s why I’m asking how the terrace construction could or should look under these circumstances.What does the architect say?Knallkörper schrieb:
The flat roof guideline is publicly accessible and binding. Yes, that doesn’t answer the question of who hired whom for what and whether they would have a chance in court.L
LuckyDuke1 Dec 2019 17:43Hello everyone,
to avoid starting a new thread on the same topic, I’m bringing this one back up.
There is practically always water standing on my garage roof, as the drain is technically installed a few centimeters above the lower edge of the slope surface. The slope itself appears to be only between 0.5 and 1%, but according to the DIN standard, there are no strict requirements here—only guidelines that can be followed or not (preferably >2%, ideally 5%).
Nevertheless, I consider this problematic, not only because the seal might eventually fail, but also because during summer many mosquito larvae or other insects might breed there.
The general contractor said he spoke with the roofer, who assured him this is not an issue. They also add gravel on top, which is supposed to displace most of the water.
Well, the water still remains standing. Here is the construction process and the final result with standing water:
to avoid starting a new thread on the same topic, I’m bringing this one back up.
There is practically always water standing on my garage roof, as the drain is technically installed a few centimeters above the lower edge of the slope surface. The slope itself appears to be only between 0.5 and 1%, but according to the DIN standard, there are no strict requirements here—only guidelines that can be followed or not (preferably >2%, ideally 5%).
Nevertheless, I consider this problematic, not only because the seal might eventually fail, but also because during summer many mosquito larvae or other insects might breed there.
The general contractor said he spoke with the roofer, who assured him this is not an issue. They also add gravel on top, which is supposed to displace most of the water.
Well, the water still remains standing. Here is the construction process and the final result with standing water:
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