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Lay Patio over footpath?

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QuestionsGarden DesignHard LandscapePaths and Paved AreasLay Patio over footpath?
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Kristine O\’Brien asked 14 years ago

We have a footpath outside our sliding doors. We want to lay a patio. Is it possible to pave over the footpath and continuing paving onto the “grass” area to make the patio larger? Is it likely the slabs on the “grass” area would move over time causing cracking between the slabs set on the “grass” and the footpath?

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Gerry Daly Staff answered 7 years ago
It is possible to pave over a concrete path, setting the slabs on a bed of mortar. Usually the paving on top of the concrete leaves its level too high as it adds about 8cm to the existing path level.

But you rightly anticipate a problem on the extended area. You need to have a very solid base of hardcore stone, well compacted with a whacker, to make sure it does not sink relative to the concrete base.

In general, the best solution is to simply break out the concrete path and remove off-site. Then lay a soild 15cm foundation under the area to be paved. This approach gives you complete control over setting the new level. 

It is not as big a task as it seems, or all that costly, to remove a concrete path.

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