Window offers like day and night

We also installed this during our renovation of the single-family house. 50m² of window area including the front door, triple glazed with warm edge and colored foil. 9k gross + installation for Drutex, about 12k gross would have been the case with profiles from the German manufacturer (I just forgot the name). There is nothing to criticize about the windows.



What does difference mean? Between "German" and "Polish". Drutex installs fittings from Mako - you find that with 50% of German manufacturers as well. U-values are the same everywhere; Drutex offers from passive house windows with Uw 0.7 to standard 1.2, like most others.

converted from our area with 50m² (including front door with Uw 1.0) we paid about 270€/m² window area with foiling - including installation! Without foiling, it would have been about 250€/m². Based on your 20 windows / 38m², that would be 9600€. That fits. But I find the 35k quite an outrageous amount - our highest offer was 400€/m² (everything without plastering)

BUT: The installers were the biggest disaster for us and in the end I didn’t pay everything and fixed the defects myself. Definitely make sure of clean installation and preferably demand a RAL-compliant installation in writing, ask how it will be implemented and check!

BUT: The installers here were the biggest disaster and in the end I didn't pay everything and fixed the defects myself. Be sure to insist on a clean installation and preferably demand a RAL-compliant installation in writing, ask how this will be implemented and check!

Currently installing windows... I would be interested to know if I have overlooked anything. Thanks

The installer has already built and installed several things for acquaintances and everyone is very satisfied

What was used for you? There are various options for RAL-compliant installation (triple compressible tape, sealing tapes, plaster sealing strips).

What didn't work for us, for example:
- Support blocks either completely forgotten or just cut from a random roof batten (spruce/pine)
- Fastening not done all around
- Wrong compressible tape used (2-4mm for joints of 5-15mm) ---> fills the joint but is not rainproof
- Wedges "forgotten" and only removed afterwards (now the foam is missing)
- Surface under the sealing tape not cleaned/primed (tape doesn't stick)
- Fastening tabs not completely covered with sealing tape (leak at the resulting "hole" next to the tab)
- They initially wanted to leave out sealing tape at the bottom ("The window sill will be in front after all")
- Sealing tape at the corners not correctly glued, later half-heartedly covered with patches over partly obvious holes
- Sealing tape on the outside in the lower area not correctly overlapped and partially not executed as a "tray"
- Sometimes wrong screws/dowels used (Poroton has different requirements than, for example, calcium silicate bricks)
- Sealing tape sometimes not installed with stretch loop
- For the wooden dormer, sealing tape used for plastering
- Compressible tape sometimes not fixed and therefore later squeezed out