Out of necessity, I had to start painting, and without cats, I managed it only with a roller. Where I don't get the paint, I wrap it with varnishing cardboard and use a flat brush in hard-to-reach places. I add: I would never make it with a brush, quite easily with a roller. I have 3.2m carpet walls from wall to wall, full of furniture, I can't clear it, I just move the furniture in various ways and I painted a large library ...