ᐅ Installing new patio slabs over existing exposed aggregate concrete slabs
Created on: 26 Jun 2020 11:40
X
X_SH5_X
Hello everyone,
we are slowly starting to work on the garden and terrace design. At the moment, we have a terrace made of old precast concrete slabs. The terrace has been there for about 40 years and definitely needs to be replaced. Since the new terrace will be a bit higher and the current slope no longer works, the idea was to lay the new slabs on a gravel bed directly over the old precast concrete slabs. Possibly, 1-2 rows of concrete slabs will be removed and filled with gravel. Is this generally possible? I assume it would be better to remove all the slabs and fill in with gravel, right? How thick can the gravel layer be to lay the slabs on? I estimate we would have about 8-10cm (3-4 inches) near the house wall. Would that be too much, or could the slabs still be set directly in gravel?
Thank you
we are slowly starting to work on the garden and terrace design. At the moment, we have a terrace made of old precast concrete slabs. The terrace has been there for about 40 years and definitely needs to be replaced. Since the new terrace will be a bit higher and the current slope no longer works, the idea was to lay the new slabs on a gravel bed directly over the old precast concrete slabs. Possibly, 1-2 rows of concrete slabs will be removed and filled with gravel. Is this generally possible? I assume it would be better to remove all the slabs and fill in with gravel, right? How thick can the gravel layer be to lay the slabs on? I estimate we would have about 8-10cm (3-4 inches) near the house wall. Would that be too much, or could the slabs still be set directly in gravel?
Thank you
ypg schrieb:
But then the water doesn’t drain...And that is exactly what I didn’t want to hearPierre schrieb:
@X_SH5_X: Which answer would you like now? The one that suits you, or a recommendation?A recommendation, of course. But it seems to be divided here as well. One person says one thing, another says something else. And it’s only natural that I would be happier if it were possible to leave the boards in place. There’s no need to create extra work when there’s already plenty to do here.X_SH5_X schrieb:
It’s a recommendation, of course. But opinions seem divided here. One person says one thing, another says something else. And it’s understandable that I would be happier if it were possible to leave the boards in place. There’s no need to create extra work when there’s already plenty to do here. But we can’t predict the future either. I’d take the risk if I had plenty of time anyway and the connection to the house is such that there’s no danger of rain. However, I would expect that the water will take longer to drain away.
If that’s also your line of thought, then fortunately I’m not the bad guy for saying it.
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