ᐅ Are Internal Roof Gutters Problematic?

Created on: 9 Jul 2021 23:15
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Hendrik1980
Dear Forum,

We are currently planning our new build with internal downpipes. Our architect has planned for these to pass through the external insulation at four points. We recently spoke with our roofer, who has limited experience with this but warned that in case of material defects, moisture could penetrate the masonry unnoticed. What are your experiences and opinions on this?
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Traumfaenger
10 Jul 2021 23:59
nordanney schrieb:

However, this severely interrupts the exterior insulation in these areas. It becomes almost negligible. Does the energy consultant agree with this?

Well, we have them installed inside with an interior wall build and it’s absolutely no problem; we have met the KfW 40 standard with top ratings.
Schimi1791 schrieb:

Could there possibly be problems in winter when everything freezes?

No, not at all, nothing freezes. If that happened, the water pipes would freeze too. We have had this setup for three years now and there is no mold, no freezing, and no noises inside the walls, not even during heavy rain. These are just rumors and assumptions from people who don’t know the subject but want to join the discussion. It’s the same as any other water pipe inside the wall. Anyone worried about this would also have to run their fresh water and wastewater pipes, air conditioning lines, etc., on surface mount or outside the house...
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ypg
11 Jul 2021 00:23
Traumfaenger schrieb:

It’s the same as any other water pipe inside a wall. Anyone who is concerned about that would also have to run their potable water and wastewater pipes, air conditioning lines, etc., on surface mounts or outside the house...

As far as I know, potable water and wastewater pipes, air conditioning lines, etc., are not installed or built inside exterior walls. That is not standard practice with current technology.
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Traumfaenger
11 Jul 2021 00:29
ypg schrieb:

As far as I know, fresh water and wastewater pipes, air conditioning lines, etc., are not installed or embedded within exterior walls. This is not current standard practice.

As a layperson, I can at least assure you that with split air conditioning units, it physically cannot be done any other way. Unless you "beam" the coolant from the inside to the outside... But again, the house has been standing for three years, all planned by an independent architect and supervised by a construction expert, and there have definitely been no issues with it. Why would there be???
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Traumfaenger
11 Jul 2021 00:35
ypg schrieb:

To my knowledge, fresh water and wastewater pipes, air conditioning ducts, etc., are not installed or built within exterior walls. That is not standard practice with current technology.
I just remembered, we also have four exterior water faucets supplied from the inside, and I'm wondering how the water actually gets there.
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Myrna_Loy
11 Jul 2021 00:43
Traumfaenger schrieb:

I just remembered, we also have 4 exterior water taps that are supplied from inside, and now I’m wondering how the water actually reaches them.

Depending on the region and the severity of freezing conditions, it is advisable to turn off the garden water supply during winter.
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Traumfaenger
11 Jul 2021 00:49
Myrna_Loy schrieb:

Depending on the region and the severity of frost periods, it is advisable to turn off the garden water in winter.
All of our outdoor faucets are frost-resistant, so we don’t turn anything off and have never had any issues. This advice might apply to older faucets.