In masonry, Repointing describes repair work that is done to mortar joints.  

Repointing is an important defensive measure in protecting a home’s structural integrity. It is required whenever mortar joints have deteriorated to the extent that water may get into the masonry. Should water get into the walls, dampness will occur. Chimneys are often candidates for Repointing as they are severely exposed to the elements.

How do I know if my home needs Repointing?

Look at all external mortar joints (the ‘cement’ between bricks). If it is loose, cracking or missing entirely then you may well have to Repoint it.

Alternatively, you could contact a RICS Chartered Surveyor for expert advice on Repointing.