Help! Damp problem after replastering -Have I been an idiot?

[Urbanvix]

Help please! I think my enthusiasm may have exceeded my ability and I've been a bit silly, but I wanted to check...

Summary: Delapidated apartment. Moved in as a 'fixer upper'. Stripped wallpaper back. Found the plaster behind crumbling. Sanded it down,removed rotten plaster, replastered, then wallpapered.

Should I have glossed the plaster before I re-wallpapered ?

Details: I'm having a damp problem. Big spreading stain with mould creeping in through the new wallpaper. Now, I KNOW there is a problem with the roof that needs to be dealt with, but my real question is: Have I made it worse by missing something ?

An aquaintance mentioned 'glossing' in conversation the other day and I wondered if I should have 'sealed' the wall after plastering (that seems logical, but my DIY experience isn't up to referencing it.) All I did was plaster, then slap an anti-mould coat on followed by paper.

I've spoken to the landlord about the roof and I'm planning to strip it all back to get rid of the damage + mould, but I DON'T want to repeat the same mistake if I've made one.

Please help? [/u]

 

[joe-90]

You have to fix the roof first, Forget the rest of it until you have.

 

[Urbanvix]

Thanks Joe, but it's not my roof. Believe me, I have practically read the rights to the landlord. I was more worried about having contributed to the problem?

 

[Urbanvix]

Woot. I've had a nice comprehensive answer on this one from FB. Thanks anyway, guys.

 

[joe-90]

It doesn't mean it's right though.

 

[Urbanvix]

If you can offer better advice, I'd appreciate it Joe ? The advice I recieved was that it's not essential to always seal after plastering, but that having a leaking roof means that it wouldn't make any difference anyway and there's certainly no point in sealing it now. The best it would have done was hide the problem.

 

[Urbanvix]

There was actually more to it than that, but those seemed to be the most important bits.