A bit worried that it is 29mm instead of 30mm. Maybe should have had a 31mm frame instead to get a 30mm board? I guess it's too late to add more concrete now?
A bit worried it will be 29mm instead of 30mm. Maybe I should have had a 31mm frame instead to get a 30mm slab? I guess it's too late to add more concrete now?
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Yes, it's extremely late. Concrete shrinks. What kind of concrete did you use? If you don't want shrinkage, then expanding concrete is the way to go.
However, I have a hard time understanding what the problem would be if it's 29 or 30mm?
Already think 30mm feels thin for a kitchen counter, so I'd prefer to have a few more mm rather than less. Plus, 30 is exactly what the full-cover sink has, so the transition there would be smoother. Also, now the new soft joint for the tiles has to be 1mm thicker. Everything is just going in the uglier direction. Will I survive? Yes, but it's just a shame. Just wanted to check if there was anything that could be done at this stage.
A little worried that it will be 29mm instead of 30mm. Maybe should have had a 31mm frame instead to get a 30mm board? I guess it's too late to add more concrete now?
[image]
Already think 30mm feels thin to be a kitchen counter, so I would rather have a few mm more rather than less. Plus 30 is exactly what the full-cover sink has, so the transition would have been smoother. Additionally, now the new soft grout to the tile has to be 1mm thicker. Everything just goes in the uglier direction. Will I survive? Yes, but it's just a shame. I just wanted to check if there was something that could be done at this stage.
It's finbetong.
Quite a few suggested a thicker slab, but that wasn't possible.
And it hasn't occurred to you that you can shim it up a tiny mm or two if needed?
No, as mentioned, it doesn't work because the tiles are where they are and the sink as well. When people suggested a larger board, I interpreted it as having to do with strength and not having 1mm thicker for the concrete to shrink?
You can shim, yes. But because the board is this thin, I would have wanted it as thick as I can—for aesthetic reasons. So it's just a bit annoying. As I said, not the end of the world!
Concrete is normally not a fine-tuning material with millimeter precision, expansive concrete, as mentioned earlier, improves the situation but with the slightest deviation, you are outside the tolerance anyway. You would need to cast with a bit of excess and plane it to tolerance.
The charm of concrete is precisely its rough appearance, and it doesn't align with millimeter precision.
I think it looks like it's drying too fast. Lots of water and wrapped is the recipe for slow drying, otherwise it cracks due to the concrete's shrinkage with fast drying....
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peterwesterlund said:
Peter2400 said:
