Can exposed aggregate be laid over an existing plain slab?

Sometimes, via a genuine resurfacing overlay — but this depends heavily on your existing slab’s condition, since an overlay is only as good as the structurally sound base it’s applied to.

A structurally compromised existing slab isn’t a suitable base for an aggregate overlay — proper assessment of the existing concrete’s condition is the necessary first step before considering this option.

Where the existing slab is genuinely sound, an aggregate overlay can be a cost-effective way to achieve a decorative finish without the disruption of full removal and replacement.

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