Elbatrop
2024-03-17 09:25:07
- #1
Good morning everyone,
in our house, the windows including the roller shutter boxes were replaced. We are currently uncertain about the sealing and insulation of the joints between the window frame/roller shutter box and the corresponding wall.
A special feature in our case: since there is a slope of the exterior wall area in the lintel area of some windows, the windows and roller shutter boxes had to be set back a few centimeters inward (window offset).
Inside, a vapor barrier was installed in the window area for most windows (but not all...). The area of the roller shutter box has no vapor barrier. Is that common?
The joint between the window frame/roller shutter box and the wall was filled with construction foam in these windows (picture: windowsill area); for matching windows, the reveals were sealed with sealing tape, always with foam at the bottom. However, there are several areas where the foaming is not continuous or, in some windows, no foam can be seen from halfway onward (also no sealing tape), and in some corners in these areas, you can push a wire through to the inside without resistance.
In the area of the lintel, the joints between the roller shutter boxes are so large (several centimeters) that one could partly see outside. The area was marked as window offset in the picture. The interior fitter has already plastered the joints from the inside. So only the option of measures from the outside remains.
According to the window manufacturer, the newly created joints should only be closed with exterior plaster. Then, of course, it would be sealed for the time being. We are now concerned that this will lead to inadequate insulation and sealing because only the plaster would act as a barrier to the interior in some places.
As a layperson, it seems strange to me that the areas between the window frame/roller shutter box and the masonry have openings. What use are good windows if the joint represents a potential weak spot?
One more question: how critical is UV light for the foam?
According to data sheets, the foam should be protected from UV light. In our case, it has already been exposed to light for 3 months.
Thank you very much and have a nice Sunday.
in our house, the windows including the roller shutter boxes were replaced. We are currently uncertain about the sealing and insulation of the joints between the window frame/roller shutter box and the corresponding wall.
A special feature in our case: since there is a slope of the exterior wall area in the lintel area of some windows, the windows and roller shutter boxes had to be set back a few centimeters inward (window offset).
Inside, a vapor barrier was installed in the window area for most windows (but not all...). The area of the roller shutter box has no vapor barrier. Is that common?
The joint between the window frame/roller shutter box and the wall was filled with construction foam in these windows (picture: windowsill area); for matching windows, the reveals were sealed with sealing tape, always with foam at the bottom. However, there are several areas where the foaming is not continuous or, in some windows, no foam can be seen from halfway onward (also no sealing tape), and in some corners in these areas, you can push a wire through to the inside without resistance.
In the area of the lintel, the joints between the roller shutter boxes are so large (several centimeters) that one could partly see outside. The area was marked as window offset in the picture. The interior fitter has already plastered the joints from the inside. So only the option of measures from the outside remains.
According to the window manufacturer, the newly created joints should only be closed with exterior plaster. Then, of course, it would be sealed for the time being. We are now concerned that this will lead to inadequate insulation and sealing because only the plaster would act as a barrier to the interior in some places.
As a layperson, it seems strange to me that the areas between the window frame/roller shutter box and the masonry have openings. What use are good windows if the joint represents a potential weak spot?
One more question: how critical is UV light for the foam?
According to data sheets, the foam should be protected from UV light. In our case, it has already been exposed to light for 3 months.
Thank you very much and have a nice Sunday.