ᐅ Is ice falling from ventilation bricks normal?

Hello everyone,
in our new build, we have a problem where ice forms on the ventilation tiles of the plumbing system during freezing temperatures.
When this ice melts, large chunks (about 8 cm x 7 cm x 2 cm (3 inches x 3 inches x 1 inch)) slide down the roof and land on our parking space with the car. This also occurs in the entrance area. We are now concerned that this could cause injury to people or damage to property.
According to our builder, this is not considered a defect, and we were advised to have snow guards installed by a local roofer instead.
What is your opinion? Is this something that is allowed, or is there a standard that regulates this kind of installation?
We were never informed about this issue before.

Thanks in advance for your help!

Your home construction company has shown you the right way. There is no doubt about that. It is neither a defect nor your problem if something falls from your roof. Additionally, the construction company is not obligated to inform you about all possible contingencies that come with building a house.

Okay, it’s tough that a layperson has to deal with life-threatening issues. I can understand snow shedding, but something like this...
If this had been discussed during the final selection of materials, we would have had the tiles installed on the garden side or specified snow guards.
Thank you for the quick response.

Yes, it may sound harsh, but unfortunately, it is true. A house or household always involves certain risks, and quite a few people die at home due to one reason or another that might seem "trivial."

Hello,
sorry, but how does ice form there? There is a pressure equalization for the pipes, not an overflow. Actually, nothing should form there... I have no idea if this is a defect, but I would like to understand where the water is coming from.

Apart from that, a snow guard is always a good idea... On our side without guards, quite large avalanches sometimes come down. You definitely don’t want to stand underneath.

Best regards,

Andreas

Warm air from inside meets cold outside air, causing condensation to freeze. This is completely normal and not a defect. @andimann