Hi.We are just about to redecorate from top to bottom, and many of the walls and ceilings if not all need some work/repairs.I was thinking of using lining paper but how do I choose the correct grade?I have also heard of soaking the paper for ten mins in what paste?Do you not not paste it and apply to a sized wall?I would like to know the correct process and any help would be great thanks [ps have tried the search]