Pointing on a roof refers to the process of applying a sealant or mortar to the gaps between the roof tiles or slates. This process is done to fill in any gaps or cracks that may have developed between the tiles or slates over time, which can lead to water leaks and damage to the underlying concrete tile roof structure.

Pointing is an essential aspect of roof maintenance and is typically carried out as part of a routine maintenance schedule or as needed when signs of damage or deterioration are observed. The type of pointing material used may vary depending on the specific roof type and the location of the building.