We had external wall insulation fit 12 months ago, we had a horrible experience with the contractors and are still having issues rectified now. I'm particularly concerned about the DPC, as there is an apparent band appearing around areas of the house.
I was wondering if anyone knows what this white may be in the black area over the DPC, it was covered with 100mm white polystyrene panels, the light grey area is where the internal floor starts and is EPS insulation. We contacted the company who completed the works, who insisted it was only salt leaching, but I am struggling to trust them and wanted to check if we need to address a protentional damp risk?
I was wondering if anyone knows what this white may be in the black area over the DPC, it was covered with 100mm white polystyrene panels, the light grey area is where the internal floor starts and is EPS insulation. We contacted the company who completed the works, who insisted it was only salt leaching, but I am struggling to trust them and wanted to check if we need to address a protentional damp risk?
