The mortar between my patio slabs is breaking up and crumbling. If I scrape it out, what is the best way of replacing it? I have been told that it has been done before with a dry mix, and that is part of the problem - it doesn't bond properly with what is underneath.
I had the same problem a few years ago, a guy in the pub who does ground work recomended some stuff you just brushed, in pressed down and that was suppose to be it, quite expensive and lasted a couple of years. Ended up buying bucket of B & Q ready mix mortar, made reasonably stiff mix, filled the gaps in and tamped down with the back of a damp spoon. After 2yrs it still seems ok