Many thanks RC - wish I'd read your advice before I agreed to the work ! I didn't know it was possible to pebbledash over an existing surface. How does this work technically ? Do you just reskim thinly over the existing surface to allow the existing pebbles to continue standing proud, or does...
Around 5 years ago my non-specialist builder patched some vertical cracks in the pebbledashing on an upstairs front bay window (ie v conspicuous). I bought the line about 'oh they will darken in with weathering'. Surprise surprise they haven't.
A few years ago I sat on a church committee...