Urade3499
2023-10-01 22:35:55
- #1
Hello everyone,
I noticed today that there are cracks visible in the base of my KFW55 new build (March 2023).
I would like to hear a few opinions from you about the cause.
The construction method is Poroton (T7-36.5-MW) with the second brick projecting on a shallow foundation. The execution was carried out according to the Wienerberger construction specifications.
As far as I can judge the situation from the outside, the cracks occur at the joints of the insulation boards. Corresponding white discolorations are also visible there. From my point of view, moisture (condensate) enters the gaps from below and then leads to the superficial crack.
The building was done by a general contractor; I am an amateur when it comes to construction trades.
According to the building description, I am responsible for the waterproofing of the base plaster against moisture from earth-contacting components according to DIN18533. For me, this means applying waterproofing slurry in the areas later in contact with the soil after the exterior landscaping is done. Could this be a consequence of the waterproofing slurry not yet being applied, even though no contact with the soil has been made yet?
Attached are photos of the current situation and two pictures from the construction phase for those knowledgeable among you. Some photos were taken during the early morning hours, when dew had settled on the wall. There the crack lines are clearly visible, although not on every wall! It is mainly the sides of the cracks that are affected, which predominantly receive rain due to wind pressure, but also lie in the sun.
I would be very grateful for your opinions on the cause of this. If you need further information for an opinion, please feel free to ask.
Best regards
I noticed today that there are cracks visible in the base of my KFW55 new build (March 2023).
I would like to hear a few opinions from you about the cause.
The construction method is Poroton (T7-36.5-MW) with the second brick projecting on a shallow foundation. The execution was carried out according to the Wienerberger construction specifications.
As far as I can judge the situation from the outside, the cracks occur at the joints of the insulation boards. Corresponding white discolorations are also visible there. From my point of view, moisture (condensate) enters the gaps from below and then leads to the superficial crack.
The building was done by a general contractor; I am an amateur when it comes to construction trades.
According to the building description, I am responsible for the waterproofing of the base plaster against moisture from earth-contacting components according to DIN18533. For me, this means applying waterproofing slurry in the areas later in contact with the soil after the exterior landscaping is done. Could this be a consequence of the waterproofing slurry not yet being applied, even though no contact with the soil has been made yet?
Attached are photos of the current situation and two pictures from the construction phase for those knowledgeable among you. Some photos were taken during the early morning hours, when dew had settled on the wall. There the crack lines are clearly visible, although not on every wall! It is mainly the sides of the cracks that are affected, which predominantly receive rain due to wind pressure, but also lie in the sun.
I would be very grateful for your opinions on the cause of this. If you need further information for an opinion, please feel free to ask.
Best regards