Hi,
I had a patio laid last year and all seemed fine during the summer but in the winter I noticed a few of the flags could move and I could pick them up, then over the winter some of the flags became raised (see picture). I have taken some of them up now and added a picture showing what the concrete is like now (very crumbly), do you know what is most likely to have caused this?
Thanks,
Danny
I had a patio laid last year and all seemed fine during the summer but in the winter I noticed a few of the flags could move and I could pick them up, then over the winter some of the flags became raised (see picture). I have taken some of them up now and added a picture showing what the concrete is like now (very crumbly), do you know what is most likely to have caused this?
Thanks,
Danny