Can't find anything when I search. Maybe it's not called gjutnät?. If that's the case, I apologize and feel free to attach if there is already a thread.

I'm tired of our stones at the front by the entrance. About 2x2 meters plus a "path" about 4x0.5m

Saw the flyer at jamofix and got tempted to try.

Mold for creating garden pathways, showing a hexagonal pattern on a path surrounded by grass and flowers, promoting a DIY paving project.

Now to my questions.

1. Can they handle the climate or do they crack easily? What is best, fine or coarse cement?

2. Do you need to lay ground fabric, or can you just take up my stones that are there now and cast?

3. Do you usually lay something between the "stones" that form? Cement there too?
 
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CarVal
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You should probably search for mönsterbetong instead, there are some threads about it here on the forum.

What creates the pattern is called stamps and the selection is larger abroad. There are usually quite a few on eBay.

What kind of groundwork you need to do depends on what is there today, but typically it's 20 cm of base layer 0/32 underneath.
 
I have cast once with these. It takes a good amount of time. Mine hasn't cracked or loosened. Curved stone pathway with surrounding soil, leading through a grassy yard next to a building.
 
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Murbyggare and 4 others
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Shomakie.

Do you have soil between the stones? Satisfied?
 
mexitegel mexitegel said:
You should probably search for patterned concrete instead, there are some threads about it here on the forum.

What creates the pattern is called stamps and the selection is larger abroad. eBay usually has quite a few.

What groundwork you need to do depends on what is there today, but typically it's a 20 cm load-bearing layer 0/32 underneath.
This is something different, however, these "separate" the "stones" while the stencils for patterned concrete only make marks on the surface (as you probably know).

But to answer TS, patterned concrete is a much better alternative. And much more attractive in my opinion.
 
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AG A
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J jonaslatt said:
Shomakie.

Do you have soil between the stones? Satisfied?
Put down the form. Filled with concrete. Then joint sand in between
 
Sounds simple. Almost too simple. Approximately how many of those molds does a sack of cement fill?
 
J jonaslatt said:
Sounds simple. Almost too simple. Approximately how many of those molds does a sack of cement fill?
Hmm. Maybe 4 pieces. Actually, I don't remember. Could be more as well. But you need to vibrate it down properly. I removed the mold after 5 minutes and continued with the next one. Then I went over it with a lightly damp sponge after half an hour and removed any casting burrs and exposed some small stones so it becomes less slippery.
 
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Veronica Helgesson and 2 others
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J jonaslatt said:
Sounds simple. Almost too simple. Approximately how many of those molds does a bag of cement fill?
The mold is like a stencil, so you pour out the concrete and level it, then press in the mold which creates the pattern...

A bag of concrete (25 kg) makes about 13 liters mixed, so it depends on the thickness how much it becomes... You should have at least 7 cm if you're casting directly on the ground, so a bag covers about 0.18 m2 (=5.5 bags per m2)
 
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TheJanHof and 1 other
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anders07 anders07 said:
The mold is like a stencil where you pour out the concrete and smooth it out, then press the mold to create the pattern...

A bag of concrete (25 kg) becomes about 13 liters when mixed, so it depends on the thickness how much you get... You should have at least 7 cm if you are casting directly on the ground, so one bag is enough for about 0.18 m2 (=5.5 bags per m2)

The mold is 40mm. Nothing has happened in 2 years. Ordinary concrete slabs for walkways are 40mm. 50mm if they're meant for cars. 70mm is overkill.
 
Oh 5.5 bags per sqm sounds like a lot. But as mentioned, 7 cm is probably a bit over the measure.

Really leaning towards starting this next week. But what does the temperature need to be?

More tips are definitely welcome.
No ground fabric or similar underneath?
 
It depends on the foundation how thick you need it as well. If it is hard and flat, 50mm might be enough, but it's of course unfortunate if it cracks...

As long as it stays above 5 degrees, it's okay to cast.
 
But if the template is 4cm, it's strange if it doesn't hold.? You can't just rebuild the template directly.
 
anders07 anders07 said:
It depends on the substrate how thick you need it as well. If it is hard and flat, 50mm may suffice, but of course it's unfortunate if it cracks...

As long as it stays over 5 degrees, it's fine to cast.

You cast in the mold. Then there's no risk of cracks. Do you think the paving stones you buy at Bauhaus are reinforced?
 
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Ah, sorry, thought it was a form pattern (that you press into wet concrete to create a pattern) and not a mold...
 
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