I went with 40-50% cus it was so warm too.
I just did a coat of colour diluted by 10% and it was soaking it up off the brush in most places so I think it was definitely needed. I see what you mean about using a brush for mist coat - definitely get more of a feel for it than roller.
First coat...
@whatsthenews yeah the key with satinwood is large brush and SLAP it on Bob Ross style. Never go over it and catch drips straight away and then leave, no touching. Threw the first 4 skirting boards I did in the skip and bought new pre-primed boards and by then I'd learnt my lesson haha.
Sounds exactly like mine!
Rub down with the wet sanding sponge things (not sure of actual name clearly) until the sheen has gone. Fill in any holes/chips, dry and sand. Any areas where one layer of paint has come off revealing another layer of paint I would try and get as much of the top paint...
Oh it's a mist coat question here we go.
So I waited 4 days for fresh plaster to dry, sanded any rough bits, wiped with damp cloth then dry microfibre cloth until the cloth was clean. Mixed 50/50 water and Dulux white Matt emulsion (the big 10l cheapish tub) and painted it on.
It went on fine...