What can I mix with magnolia emulsion

Hi Yes Zinsser b.i.n as already mentioned is very good, first try washing off the mould with sponge and water and a little bleach and make sure fully dry before applying the Zinsser b.i.n. If the wall is prone to condensation you would do well to apply harder wearing and more wipe clean top coats like Valspar Premium

Hello . You will be better off to get some stain block first and pants this on then coat with your paint arfter. Ronseal do it yourself can get this from most diy shops

Hi. There are products available that can be added to paint to prevent mould growth.....but To to do a thorough job you need to.... After stripping the paper you need to remove all traces of old wallpaper paste, the mould likely existed in this. When dry apply 2 coats of zinsser b.i.n to the affected areas. This will block any re-growth from spores that may remain in the wall. Then paint with your paint ( with fungicide ingredient added) Or paint with a paint that has this ingredient