Hello everyone,
Our terrace is planned to be level with the terrace exit, as is common nowadays. However, due to certain issues that I won’t go into detail about here, there are areas where I cannot fill up to this height with gravel and crushed stone.
After considering and calculating different solutions, the most practical (or rather affordable) option for me is to place edge restraints (curb stones) about 20 to 30 cm (8 to 12 inches) away from the wall. This prevents the gravel/crushed stone from reaching the wall and allows the paving slabs to extend over these stones (of course, the height will be taken into account).
Now my question is: how can I make sure that the slabs resting over this cavity are stable and won’t tilt, ideally in a durable way? I have seen that this issue often comes up with prefabricated houses and that there are special grate support solutions for it (which I don’t need and find too expensive). But I haven’t found a solution yet for supporting the slabs in this situation. I have thought about simply using angle brackets meant for grates (one example is called angle bracket type 3 for grate width 300 mm (12 inches)) and cutting off the protruding lip on the back so the slab can fully extend across.
However, these brackets are quite expensive as well, so I wonder if heavy-duty brackets suitable for outdoor use might also work.
Do any of these solutions sound reasonable to you, or do you have completely different suggestions or ideas? This topic is driving me a bit crazy and is holding up the entire terrace project, which the kids really don’t like ;-)
I would appreciate any advice!
Additional information based on questions:
Regards,
Benito
Our terrace is planned to be level with the terrace exit, as is common nowadays. However, due to certain issues that I won’t go into detail about here, there are areas where I cannot fill up to this height with gravel and crushed stone.
After considering and calculating different solutions, the most practical (or rather affordable) option for me is to place edge restraints (curb stones) about 20 to 30 cm (8 to 12 inches) away from the wall. This prevents the gravel/crushed stone from reaching the wall and allows the paving slabs to extend over these stones (of course, the height will be taken into account).
Now my question is: how can I make sure that the slabs resting over this cavity are stable and won’t tilt, ideally in a durable way? I have seen that this issue often comes up with prefabricated houses and that there are special grate support solutions for it (which I don’t need and find too expensive). But I haven’t found a solution yet for supporting the slabs in this situation. I have thought about simply using angle brackets meant for grates (one example is called angle bracket type 3 for grate width 300 mm (12 inches)) and cutting off the protruding lip on the back so the slab can fully extend across.
However, these brackets are quite expensive as well, so I wonder if heavy-duty brackets suitable for outdoor use might also work.
Do any of these solutions sound reasonable to you, or do you have completely different suggestions or ideas? This topic is driving me a bit crazy and is holding up the entire terrace project, which the kids really don’t like ;-)
I would appreciate any advice!
Additional information based on questions:
- This is a masonry house, not a prefabricated one. I mentioned the prefab example only because there are specific solutions available for this type of construction, but they are tailored to prefab requirements.
- The underlying issue for my planned workaround is that the plaster was applied too low. Otherwise, I would have placed the gravel against the textured base plaster, which would leave only a small amount of base plaster above the slab.
- The substrate is a load-bearing layer of gravel, and I can securely concrete in the edging stones, so that is not a problem.
- A distance of 20 cm (8 inches) would be sufficient, and there is ventilation behind the stones at some points.
Regards,
Benito
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