ᐅ French balconies on 17 cm Ytong blocks with 12 cm insulation?

andimann schrieb:

if the floor-to-ceiling windows were already included in the contract, that is initially not your problem.

Unfortunately, it is. The price increases affect this, and the contract is no longer covered by the fixed-price guarantee... The fact that the builder "oversold" and currently only sees steel brackets on the outside of the house as a solution is then our (expensive) problem.

Since I don’t want to give up floor-to-ceiling windows, I am looking for alternative mounting options...

WilderSueden schrieb:

(...)
The current solution combines the disadvantages of Ytong with those of an external thermal insulation composite system (ETICS), offering little time savings for the contractor and no other benefits. That’s how you end up with something like this.

I see. What disadvantages does Ytong have?
In the 17cm (7 inches) version with compressive strength class PP4 and the proper anchor, it actually supports significantly more than a hollow brick.

You’ll have to accept the brackets. Insulation won’t support a French balcony.

xMisterDx schrieb:

Aha. What disadvantages does Ytong have?
In the 17cm (6.7 inches) version with compressive strength class PP4 and the right anchor, it can even support significantly more than a hollow core brick.

An external thermal insulation composite system (ETICS) is best installed on a heavy wall. In single-family homes and similar buildings, this is usually sand-lime brick, while in multi-family and commercial buildings, concrete is typical. These materials offer much higher load-bearing capacities, even without special anchors, and noticeably better sound insulation. Ytong is a good choice if you want to build monolithically.

You actually don’t need any anchors. If the interior isn’t plastered yet, I would drill completely through the wall and screw from the inside.

On the outside, put a spacer sleeve for the external thermal insulation composite system (ETICS) and screw the mesh onto it there.

I happened to get my mesh for 40 euros at a scrap yard. Wrought iron and galvanized, and it fit perfectly.
I embedded them in the wall with concrete. But I have 36cm (14 inches) Poroton blocks.

Then the plasterer came to give a quote. He wanted me to cut off the mesh and re-weld it after plastering. Really. It would have been too much work for him to plaster around it. So I plastered it myself and, of course, left the mesh in place.

But again, with Ytong blocks only 17cm (7 inches) thick, I would drill through the wall. No anchors needed.

Check if your roller shutter manufacturer offers fall protection made of glass. They can integrate it, placing it below the rail, so your wall remains untouched....

Buchsbaum schrieb:

But again. Ytong only 17cm (7 inches), you could easily go straight through the wall. Without any anchors.

Wouldn't that create a perfect thermal bridge?