The application of a sealant to concrete paving can be a cost effective method of improving its appearance, and under some circumstances, prolonging its life.

Some sealants are manufactured with a high solids content and are able to resist staining from engine oil. Some also have the ability to stabilise jointing sand.

Sealants cannot be applied immediately to a newly paved surface; a natural phenomenon ‘efflorescence’ or ‘lime bloom’ brought about by the chemical reaction between cement and water may occur, and this should not be sealed in.

The weather is a significant factor with the efflorescence more frequently occurring in winter months – the effect is only temporary and superficial, and will disappear in time without affecting the durability or the strength of the paving. Subsequently, the sealant can be applied subject to the manufacturer’s guidelines.