Have just painted one layer of trade matt emulsion white paint over what looks like orange paint from the previous owners. (Have attached a picture of another orange wall as a sort of “before”!)
We have done the same everywhere else in the house (but over different colours) and it’s gone fine - but this wall has gone streaky and bumpy (you can feel the texture!) we sugar soaped the wall first and used a roller for the paint - exactly the same as everywhere else... so why has this wall done this, and what do I do next?!