Have you ever found yourself on-site and wondering “What’s going on here?”
This blog is here to help hone your skills.

What’s going on with this Natural Stone Surface?

The handy thermal camera reveals there is moisture trapped under this natural stone surface. This causes a ‘picture frame effect’ as the moisture tries to find its way out of the weakest points, which in this case are the grout joints. In this example, there is a high chance of efflorescence forming. Efflorescence is a crystalline deposit of salts that can form when water is present within certain building surfaces. The probable cause is a rain event prior to grouting the natural stone.