Hello everyone,
I’m trying to figure out the best option for my project and maybe you have some ideas I haven’t considered yet. Here is my plan and some details.
1. The red hatched terrace area is to be uniformly paved (Weserwaben natural stone-look concrete slabs, 3 cm thick (1¼ inches)) – this includes both the existing paved area and the lawn area.
2. Edging with matching curb stones.
3. Raise the entire paved surface by approximately 10 cm (4 inches) to reduce the tripping hazard at the patio door, especially after a couple of beers.
4. The slabs are currently fixed with concrete wedges.
5. The slabs rest on gravel, have a slope, and have been stable for 15 years.
6. On the house wall side, there is a bitumen waterproofing up to the top edge of the gravel, but no drain board.
My preferred approach would be:
1. Set the curb stones.
2. Keep the existing paving, add 5 cm (2 inches) of gravel, level it, and lay new slabs on top.
3. For the lawn area, proceed with the usual method (excavation, compaction, gravel, levelling, paving).
Alternatively:
1. Remove slabs.
2. Remove gravel.
3. Raise the compacted area.
4. Replace gravel, level it, and re-pave.
My questions:
What do you think about the possibility of paving over the existing slabs?
If I excavate the lawn area and remove the concrete wedges, will the base of the existing paved area collapse into the excavated lawn section?
Thanks for reading!
Patrick
I’m trying to figure out the best option for my project and maybe you have some ideas I haven’t considered yet. Here is my plan and some details.
1. The red hatched terrace area is to be uniformly paved (Weserwaben natural stone-look concrete slabs, 3 cm thick (1¼ inches)) – this includes both the existing paved area and the lawn area.
2. Edging with matching curb stones.
3. Raise the entire paved surface by approximately 10 cm (4 inches) to reduce the tripping hazard at the patio door, especially after a couple of beers.
4. The slabs are currently fixed with concrete wedges.
5. The slabs rest on gravel, have a slope, and have been stable for 15 years.
6. On the house wall side, there is a bitumen waterproofing up to the top edge of the gravel, but no drain board.
My preferred approach would be:
1. Set the curb stones.
2. Keep the existing paving, add 5 cm (2 inches) of gravel, level it, and lay new slabs on top.
3. For the lawn area, proceed with the usual method (excavation, compaction, gravel, levelling, paving).
Alternatively:
1. Remove slabs.
2. Remove gravel.
3. Raise the compacted area.
4. Replace gravel, level it, and re-pave.
My questions:
What do you think about the possibility of paving over the existing slabs?
If I excavate the lawn area and remove the concrete wedges, will the base of the existing paved area collapse into the excavated lawn section?
Thanks for reading!
Patrick
Regarding point 3) What about rain? If you raise your terrace, heavy rainwater might press against the patio door. I would recommend installing a drain in front of the door as well, but then you definitely need to remove all the slabs and start the full process.
Otherwise, it is certainly possible. The gravel will probably shift a bit, but as long as no one steps on the edge, that’s not a problem.
Otherwise, it is certainly possible. The gravel will probably shift a bit, but as long as no one steps on the edge, that’s not a problem.
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