ᐅ Are cracks in window sills normal?

Created on: 17 Aug 2022 12:59
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Jacy0505
After returning from our vacation, we visited our construction site for the first time today. In the meantime, the internal window sills have been installed. We were shocked by the many cracks.... Of course, it is a natural material, but it really doesn’t look good. Is this normal and something we just have to accept?

Another question: Our front entrance door has already been installed, even though the interior plastering hasn’t been done yet. We have already noticed some scratches. The door wasn’t covered at all to prevent damage. The interior work is only just beginning, and different tradespeople are coming and going. How was this handled in your experience, and who is responsible for any potential damage?

Thank you for your opinions. We’re a bit upset with the carpenter right now.

Beige stone worktop with visible hairline crack and stains, white wall above.


Brown, speckled floor with central crack line; metal edge visible at the bottom


Light stone worktop with fine hairline crack in the middle and reflection


Underside of a white door with threshold, concrete floor with cracks, brick wall on right.
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Neubau2022
18 Aug 2022 11:39
Steffi33 schrieb:

Well... if it bothers you that much... just try to have it replaced... I just wanted to take the pressure off by saying it’s not something terrible... 😉

My window sills are fine 😎 Given the extra cost, I certainly don’t expect any with cracks, breaks, or similar defects.
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Jacy0505
18 Aug 2022 11:41
This was the response from our carpenter to our complaint. An information sheet about the material..... I hope it is understandable

Page with information on Jura limestone (Jura marble): composition, properties and tables.
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Neubau2022
18 Aug 2022 11:44
Jacy0505 schrieb:

This was the response from our carpenter to our complaint. An information sheet about the material..... I hope it can be

Those are my quartz veins, right? Those are cracks.

OK. The crack is probably explained by this (see attachment).

Text section explains fossil inclusions in limestone (algae, sponges, aquatic animals) and their frequency.
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Cronos86
18 Aug 2022 12:23
In my opinion, the information sheet for the material does not mention typical transport or handling damage.

Based on the pictures, these are not quartz veins (former cracks in the stone that have been refilled) but rather current cracks caused during processing, transport, or installation. To me, this indicates defective or second-grade material. There are also undamaged limestone window sills available...

For clarification, are the "cracks" noticeable to the touch? For example, can you catch them with a fingernail, or do they allow water, dirt, etc., to enter?
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Steffi33
18 Aug 2022 14:11
Our cracks are not even noticeable to the touch. I poured a little water on the crack area about 2 hours ago.

2 hours ago...

A small white stone lies on a beige stone slab; a crack line runs across it.


Just now...

Concrete floor with a fine crack and a round light spot


They look much more "dramatic" in close-up photos than they really are. Here is another view from a different angle and distance... the crack becomes less visible.

Bright open dining area with wooden table, wicker chairs, laptop, bookshelves, and plants.
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SaniererNRW123
18 Aug 2022 14:15
Neubau2022 schrieb:

OK. The crack is probably explained by this (see attachment).
But there is nothing mentioned about cracks there. Or did I overlook it?