Do I need undercoat with f&b

[Imlostwithoutahope]

Can you tell it's the first time I'm using this paint :)

All the blurb says you have to use their undercoat for wall paint. However I never have before as surely the old coat of paint is an undercoat!

So can anyone who uses the f&b wall paint let me know if it is needed.
Thanks

No undercoat needed unless your walls are freshly plastered. You should give your walls a quick sand and a wash with a sugar soap solution before painting. You will get a smoother result.

Used F&B a plenty and not ever undercoated unless it was virgin wall.

Excellent thanks. I washed them down yesterday(they look like new walls, can't believe they were so dirty) so I'm good to go then.

Thanks

Hi a newbie as well here to F&B b.we put their primer and undercoat on as I was advised to on here and at store.we have a white matt dulux on some of the walls and F&B on others .have to say the F&B primer looks gorgeous so far.its the finish.About to put top coat on.Do you want me to post
the difference?

I'd be interested in seeing the difference, motherofluvlies