Can mould grow underneath gloss paint?

[LilJen84]

We brought a property 12 months ago and completey renovated it. We also had a damp course done on it. We have now lived in our house for 6 months.

However, I have just noticed the skirting downstairs (MDF) has started to bubble. I'm just wondering - is it possible for mould to grow under the gloss paint? Forgive me if I sound thick! The only reason I ask this is because I have scraped some of the bubbled paint off and it looks black underneath?!

My concern now, if it is mould, what would be the best option?

Thanks in advance.

 

[big-all]

look at it the other way you have mold growing on the mdf thats painted on the back[front]

 

[keyboardangst]

A damp course doesn't fix everything. Is the room cold/humid in the winter? Water vapour easily condenses on a cold wall.

 

[LilJen84]

So what would be our best option?!

 

[keyboardangst]

I scraped a bathroom ceiling covered in mould recently. After spraying with white vinegar to kill the mould I used Zinnsers anti mould paint.

That's what I did anyway.