ᐅ Attaching basement insulation? Construction errors, perimeter insulation for exterior walls
Created on: 17 Nov 2015 23:40
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Dieter_SLSD
Dieter_SLS17 Nov 2015 23:40Hello,
I am new to the forum, and we are building with the company Systemhaus Fell from Merzig in Saarland.
So far, we are quite satisfied with the contractors, but towards the end, there are the usual small issues that still need some rework, and I would appreciate some advice on these.
Unfortunately, the basement was only insulated up to the height of the basement ceiling with perimeter insulation (12cm (5 inches)), and the insulation of the exterior wall was extended down to the perimeter insulation and then plastered over. This means the standard exterior insulation will be buried in the ground up to the height of the floor-to-ceiling windows once we start building the terrace next year.
The basement ceiling itself is not insulated at the window level. For a light well, some pieces were simply cut out of the perimeter insulation and glued in (see photos).
Therefore, my questions are:
1. Is it acceptable for the exterior wall insulation to be buried underneath the terrace floor, or should we consider something specific when building the terrace?
2. Can the missing basement insulation simply be glued on afterwards?
3. The contractor who insulated the exterior facade told us to repaint the joint between the perimeter insulation and the facade insulation with waterproof slurry... we applied the slurry over the plaster... was this correct?
Thank you for your feedback and any personal experiences.
If I was unclear or if further information is needed for an answer, I would also appreciate your feedback.
I am new to the forum, and we are building with the company Systemhaus Fell from Merzig in Saarland.
So far, we are quite satisfied with the contractors, but towards the end, there are the usual small issues that still need some rework, and I would appreciate some advice on these.
Unfortunately, the basement was only insulated up to the height of the basement ceiling with perimeter insulation (12cm (5 inches)), and the insulation of the exterior wall was extended down to the perimeter insulation and then plastered over. This means the standard exterior insulation will be buried in the ground up to the height of the floor-to-ceiling windows once we start building the terrace next year.
The basement ceiling itself is not insulated at the window level. For a light well, some pieces were simply cut out of the perimeter insulation and glued in (see photos).
Therefore, my questions are:
1. Is it acceptable for the exterior wall insulation to be buried underneath the terrace floor, or should we consider something specific when building the terrace?
2. Can the missing basement insulation simply be glued on afterwards?
3. The contractor who insulated the exterior facade told us to repaint the joint between the perimeter insulation and the facade insulation with waterproof slurry... we applied the slurry over the plaster... was this correct?
Thank you for your feedback and any personal experiences.
If I was unclear or if further information is needed for an answer, I would also appreciate your feedback.
Hire a building damage assessor to take a detailed look at the situation and provide an evaluation. You should not accept the work as documented by the photos, nor approve or pay for it until the assessment is complete.
Placing the light well centrally between the two patio doors and extending into the door area is completely unacceptable. This setup is bound to cause construction defects due to ineffective drainage. The entire insulation and waterproofing situation around a patio door, especially if it is barrier-free, is delicate and complex. It must be carefully planned in detail down to the last waterproofing layer before construction and thoroughly checked during execution. External thermal insulation composite systems (ETICS) at the base or in contact with soil are inappropriate here. This is incorrect. Up to 30cm (12 inches) above the ground level, only so-called perimeter insulation is permitted. The waterproofing on the basement wall and base must be carried out as structural waterproofing according to DIN 18195, based on the moisture exposure scenario (soil report). It must also be applied up to 30cm (12 inches) above ground level. The base up to 30cm (12 inches) above ground level must be finished with a base render compatible with the perimeter insulation.
There appears to have been significant poor workmanship here. Who is responsible for the detailed planning?
Placing the light well centrally between the two patio doors and extending into the door area is completely unacceptable. This setup is bound to cause construction defects due to ineffective drainage. The entire insulation and waterproofing situation around a patio door, especially if it is barrier-free, is delicate and complex. It must be carefully planned in detail down to the last waterproofing layer before construction and thoroughly checked during execution. External thermal insulation composite systems (ETICS) at the base or in contact with soil are inappropriate here. This is incorrect. Up to 30cm (12 inches) above the ground level, only so-called perimeter insulation is permitted. The waterproofing on the basement wall and base must be carried out as structural waterproofing according to DIN 18195, based on the moisture exposure scenario (soil report). It must also be applied up to 30cm (12 inches) above ground level. The base up to 30cm (12 inches) above ground level must be finished with a base render compatible with the perimeter insulation.
There appears to have been significant poor workmanship here. Who is responsible for the detailed planning?
Dieter_SLS schrieb:
Thank you for the feedback and your personal experiences.For any experience reports, please note that these belong in the moderated forum about construction companies, which can be found here.
Regards, Yvonne
@Dieter_SLS: Do you have a home building blog?
D
Dieter_SLS19 Nov 2015 22:16Hello,
thank you for the detailed feedback. I don’t want to call it shoddy workmanship just yet; after all, we are still in the construction phase and have not given final approval. I will discuss the information with an expert and inform the builder. Then I hope that corrections will be made; otherwise, I will not pay the full amount.
No, unfortunately we do not have a home construction blog.
Greetings from Saarland
thank you for the detailed feedback. I don’t want to call it shoddy workmanship just yet; after all, we are still in the construction phase and have not given final approval. I will discuss the information with an expert and inform the builder. Then I hope that corrections will be made; otherwise, I will not pay the full amount.
No, unfortunately we do not have a home construction blog.
Greetings from Saarland
And this topic https://www.hausbau-forum.de/threads/Kunststoff-lichtschacht-muss-die-Dämmung-noch-mal-behandelt-werden.13954/ definitely deserves a closer look.
Best of luck, Yvonne
Best of luck, Yvonne
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