25/03/2026
What’s wrong with this wall?
If you spotted the cement pointing work then you’re on the right track.
Granite stone walls such as these will often move and settle over time, something which a hard cement mortar doesn’t accommodate very well.
Further, granite walls such as these will always have moisture present within the fabric. When cement is used the wall’s ability to release moisture is disrupted. The result, even if not immediately visible will cause the granite to decay over time.
So what can you do if facing a similar situation?
Although it may not be the easiest part of repairing a wall like this, removing the cement and choosing an appropriate lime mortar is often the best approach.
A lime mortar will allow moisture to transfer in and out of wall by creating a controlled and ideal path for the moisture to move, through the joints.
This is why you will sometimes hear lime mortar referred to as a ‘sacrificial element’. By providing this path, the moisture will bypass the stones, helping to preserve the building's structural integrity, heritage and aesthetic.
Plus, from a budget and practical standpoint, it's far easier and more cost-efficient to repoint than it is to replace stone.
Want to learn more about pointing with lime?
Read our or guide Lime Mortars for Pointing and How to Repoint. Link in bio.
