Is it permissible to fasten downpipes with insulation dowels?

Hello,

our contractor has attached our downpipes with a distance of 10cm from the outer edge (16cm WDVS) using 95mm insulation plugs (5 downpipe clamps). These sit exclusively in the WDVS and look just like the insulation plugs I bought at the hardware store for my mailbox.

The construction supervising expert noted this as a defect, saying it does not comply with recognized technical standards.

The contractor himself says, of course, it is not like that. The insulation plugs prevent thermal bridges, do not damage the WDVS since they have no movement play as if the clamps were properly fixed in the wall. He also pointed out that this solution is offered by some companies for this purpose.

Does anyone have experience with this? Is this a defect or rather an advantage? I am worried that the downpipes might eventually break off along with the edge of the WDVS in strong winds, since the distance to the outer edge of only 10cm is very small.

I would appreciate helpful tips.

Best regards

barcardi

Your downpipe is in the insulation!? Take a photo...

The downpipe is fixed to the insulation with pipe clamps, i.e. no anchoring in the masonry. The distance to the outer edge is 11 cm. Since the ETICS is 16 cm thick, the downpipes cannot be anchored in the masonry without major effort.

I have attached some pictures.

Oh, I see... I thought wastewater...

There are no longer screws - I wouldn't worry about thermal bridges with 2 screws. I'm with you mentally - that's not how it works.

Longer screws are useless because there is no masonry at that spot. If I drill deeper there, it only goes sideways through the [WDVS].

If it turns out to be a defect, then the downpipe must be completely removed, the gutter must be relocated, and new holes must be made. The old ones probably won’t look nice anymore after being repaired.

Working with sheet metal? WDVS off there, sheet metal on masonry, then downpipe on sheet metal?