Could someone please tell me what this black coating is on our terrace? It has seriously deteriorated in the last two years or so want to identify what it is before deciding on next step.
Hi all, The steps in my backyard is made of bricks and concrete paving slabs (see photo). Two of the slabs have split by simply stepping on them, which revealed that they are not properly supported (Can be seen on the photo) Screenshot_2.jpg Under other slabs I was able to lift, some have soil under...
