Too late now but may be worth getting them to sign a waiver in future when using chemicals.No waiver no favour
Kev measured the driveway and it’s 52.5 m2 Spoke to the customer explained what I hoped to achieve and he seems reasonable and happy for me to proceed.Will do a small spot test First Are there sealant brands that give a more Matt / satin finish From your experience ?
Not yet .. I will still try a jet wash before I try anything & be careful not to damage the surface.