I've just received this plea for help from an old friend who has been most impressed in the past by the expertise that sloshes around on PPUK:
" HELP..Pat my cleaner has been over vigorously removing the London green moss which develops on my 2 lovely new front steps. I do not know what the stone is but it is now back to pristine white. The bad news is that she seems to have broken down the surface - I have yet to find out what she has been putting on . It is a bit embarrassing. the main point is that white sediment is washing off the stone on to the front path and the surface of the steps is rough. Please !! do you know a product that I can put on to stabilise the stone surface and stop the process? I did see a stone sealer in a decorators shop but it was for indoor use. Could you ask your gurus on the property website? "
For the past forty years she has lived in one of those lovely Edwardian terrace houses in Ealing and a couple of years ago had her red&black tiled front path (the only one left in her street!) beautifully restored, and the new steps put in, so this development is a real disaster for her.
" HELP..Pat my cleaner has been over vigorously removing the London green moss which develops on my 2 lovely new front steps. I do not know what the stone is but it is now back to pristine white. The bad news is that she seems to have broken down the surface - I have yet to find out what she has been putting on . It is a bit embarrassing. the main point is that white sediment is washing off the stone on to the front path and the surface of the steps is rough. Please !! do you know a product that I can put on to stabilise the stone surface and stop the process? I did see a stone sealer in a decorators shop but it was for indoor use. Could you ask your gurus on the property website? "
For the past forty years she has lived in one of those lovely Edwardian terrace houses in Ealing and a couple of years ago had her red&black tiled front path (the only one left in her street!) beautifully restored, and the new steps put in, so this development is a real disaster for her.