About Lime


Lime as a pointing or plaster will, under normal conditions, last for many decades. It will often outlive and outperform modern cement mortars. These traditional mortars have been used for centuries to allow moisture to evaporate naturally from buildings and thus enable damp to be minimised and reduce structural damage. With the addition of breathable paints contemporary finishes can be maintained to give a higher quality and more textured finish than with modern mortars.

In its natural state lime (as a derivative of limestone) must be used with caution and as a mortar should be applied with care. When mixed with predominantly sharp sand to create a workable mortar its colour can be varied through the use of different coloured sands. When applied correctly it allows buildings to ‘breathe’ by helping moisture to evaporate naturally. Its application can be as a pointing, plaster or render and it can be used in its many and varied forms in most aspects of a building. Lime is especially useful in solid wall construction on buildings that date from a Norman Church to a 20th century brick house.

Damp is a constant threat to any building either directly or indirectly through damp rising within walls through capillary action. The use of an inferior material such as cement not only encourages damp problems by trapping moisture but also can damage stone or brick through chemical reaction. Additional damage can be incurred in the winter when ice crystals are formed. Expansion causes further damage by affecting the weakest part of the structure. This is often most apparent in brick or stone buildings where a cement pointing or render has been applied.