I have done several searches but I cant find an answer to this question however that might be because what I am after does not exist ! My 1960's town house has plastered walls which were wallpapered for many years, about 5 years ago we stripped all the wallpaper back to plaster and smoothed it as much as possible. It was then sealed and emulsioned. There are a number of hairline cracks in the plaster, I have painted them over a couple of times but the reopen, I suspect as a result of expansion/contraction throughout the year. I would like to find a paint that has enough bulk to fill these cracks and which is also flexible enough to ensure that they don't open up again, does such a product exist? I know several emulsions claim to do this but the ones I have tried do not work !! I really do not want to use lining paper as I don't like it at all. Thanks.