Having never attempted to do it before we have a few questions for the panel:
1. The stones (spar) are generally well stuck to the wall, but the guy that was painting the neighbours' house suggested that, considering the age of the original render, a 1st layer of paint mixed with PVA would be advisable to ensure everything remains intact . Does it make sense? If so, at what ratio? 2. How many layers will be required? Note that the house has never been painted before. 3. Do we need to prime the walls? 4. Does the 1st layer need to be thinned, and at what ratio? 5. Should we use oil or water based paint, and why? 6. Which paint should we use (we live in one of the wettest parts of the UK if that makes a difference)? 7. How often should it have to be repainted to achieve an acceptable appearance? 8. Roller or brush? The stones are very small and sharp. Any recommendation of a make/type/etc? Time no issue (pretty much) - quality of finish is the main concern. Don't want to use spray (long story...) 9. Should we just get the experts in? The gable ends (it is a detached) are very high and difficult to reach, so we will have to get them to do those anyway, but we were hoping to do the front and back ourselves (better finish, and cheaper overall). 10. Any thoughts on window sills (they are concrete ones) - should we leave them or paint as well?
Many thanks in advance for any useful information.