On 26/04/2017 13:53, Peter wrote:
A horrible job from memory, especially as the 'pebbles' are huge, and need a brush not roller to cover. No choice though as was previously painted. Read somewhere that brushing on a thin coat of cement wash first helps - might it smooth the surface a bit, or is that just to prime the surface? The pebbles are well stuck on in any case.

Spray it.

Bill