Bostik Black Limestone Restorer is a clear liquid, which penetrates into dry, porous, external black limestone paving to return it to a black, matt satin finish.

Black Limestone Restorer reacts with the substrate to form a hard, durable seal, enabling superior performance. The sealer provides excellent resistance to stains and water, while enhancing the paving colour to give a deep black finish. It can be used to protect drives, paths and patios made from black limestone. Not for internal use.