ᐅ Plaster is coming off in the base area below the floor-to-ceiling window.
Created on: 29 Oct 2025 21:22
R
Richard_Hello everyone,
In our house (built in 2003, bought 5 years ago), the plaster including reinforcement is detaching from the insulation on the lower part of the base. The area directly below a floor-to-ceiling window is especially affected (see photos; the paving was removed there).
I have now realized that the existing construction – without a drip edge and without a clearly separated base structure – is not ideal from a structural point of view. Also, the fact that so far no drainage membrane or gravel strip for decoupling has been installed is certainly unfavorable. However, the construction has held up for about 20 years without major problems, and the area is only rarely exposed to direct rain.
My current plan is to repair the damaged spots (adhesive mortar, reinforcement, scratch coat, paint) and then install a drainage membrane with a gravel strip in front of it to better protect the base in the future.
Does this approach make sense in your opinion, or is it likely that the damage will reoccur within a short time?
Thank you very much for your assessments!
In our house (built in 2003, bought 5 years ago), the plaster including reinforcement is detaching from the insulation on the lower part of the base. The area directly below a floor-to-ceiling window is especially affected (see photos; the paving was removed there).
I have now realized that the existing construction – without a drip edge and without a clearly separated base structure – is not ideal from a structural point of view. Also, the fact that so far no drainage membrane or gravel strip for decoupling has been installed is certainly unfavorable. However, the construction has held up for about 20 years without major problems, and the area is only rarely exposed to direct rain.
My current plan is to repair the damaged spots (adhesive mortar, reinforcement, scratch coat, paint) and then install a drainage membrane with a gravel strip in front of it to better protect the base in the future.
Does this approach make sense in your opinion, or is it likely that the damage will reoccur within a short time?
Thank you very much for your assessments!
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