ᐅ Moisture is seeping through the floor-to-ceiling windows in the new build.
Created on: 18 Jan 2021 10:41
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HansHackHello everyone,
We are currently building our single-family house, and so far everything has gone well.
However, after installing the floor-to-ceiling windows on the ground floor, we noticed that moisture is penetrating through the masonry barrier into the interior of the house through all three windows. The ground floor windows were installed on the masonry barrier, whereas on the upper floor this is not the case. There, the windows were mounted on the concrete slab.
Inside the ground floor, the floor-to-ceiling windows were sealed with a sealing tape. On the outside, such a sealing tape has not yet been applied (although it has been used on all the other “standard” windows).
The window installer will come back to the site soon, and I plan to address this issue with them then. However, I wanted to get some opinions beforehand so I might have some arguments ready.
Thank you very much!

We are currently building our single-family house, and so far everything has gone well.
However, after installing the floor-to-ceiling windows on the ground floor, we noticed that moisture is penetrating through the masonry barrier into the interior of the house through all three windows. The ground floor windows were installed on the masonry barrier, whereas on the upper floor this is not the case. There, the windows were mounted on the concrete slab.
Inside the ground floor, the floor-to-ceiling windows were sealed with a sealing tape. On the outside, such a sealing tape has not yet been applied (although it has been used on all the other “standard” windows).
The window installer will come back to the site soon, and I plan to address this issue with them then. However, I wanted to get some opinions beforehand so I might have some arguments ready.
Thank you very much!
Is there standing water at that spot, or how is it during heavy rain?
The scaffolding is in the way, but I would remove the soil there so that water cannot collect at that spot in the first place. We moved into our new build a few months ago as well. The floor-to-ceiling windows are still sealed, only with the waterproof membrane, which is not enough. However, at least water cannot collect in those areas for me because there is no soil there.
The scaffolding is in the way, but I would remove the soil there so that water cannot collect at that spot in the first place. We moved into our new build a few months ago as well. The floor-to-ceiling windows are still sealed, only with the waterproof membrane, which is not enough. However, at least water cannot collect in those areas for me because there is no soil there.
icandoit schrieb:
Are those bricks in front of the window?Hello, what exactly do you mean? The house is built with 36cm (14 inch) Poroton bricks. The window in the picture (ground floor) sits on a concrete slab, which in turn rests on our shuttered concrete basement.Regards
Dominik
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