Hi guys.
We had a section of our garden renovated and left an area with slabs to put garden furniture.
We used 600x900 slabs and at the time I noticed they were quite dirty, almost like something had been spilt on them, I mentioned this to the builder who told me it's normal and they would "weather" and eventually disappear.
It's been 8 months now and I've seen no change, Ive tried power hosing but it won't go away. Has anyone experienced this before? If so what did you use to remove it?
We had a section of our garden renovated and left an area with slabs to put garden furniture.
We used 600x900 slabs and at the time I noticed they were quite dirty, almost like something had been spilt on them, I mentioned this to the builder who told me it's normal and they would "weather" and eventually disappear.
It's been 8 months now and I've seen no change, Ive tried power hosing but it won't go away. Has anyone experienced this before? If so what did you use to remove it?