Should i use stain blocker?

[Kath123]

To cut a long story short i removed wall paper in bedroom to find 2 walls were horribly stained with mould and mildew stains. I have used a fungicide etc. I want to just paint the walls not wall paper so my question is this should i use some sort of stain blocker? If so could you tell me which is the best and where to buy it?

 

[dcdec]

If you've killed off the mould and figured out and rectified the reason why there's no need. Stain blocks wouldn't work anyway as the mould settles on top of the final coating.

 

[Kath123]

Thanks yes i have solved the problem of mould the old story not enough ventilation . Thanks for your advice. Regards