single skin external wall causing condensation/cold/damp!!!!

[billabongbob]

I have been suffering from black spot mould for five years in a ground floor room with a single brick skin external wall. I have hacked the existing plaster off as it was suffering from salts and there is a chemical damp proof course in place from an established company. Air bricks are plenty beneath the timber joists and into cellar, I have also insulated between the joists to prevent cold coming up through the floor boards.

My intention was to line the wall with something? Maybe some sort of barrier that i can then dot and dab foil backed plaster board to this.

Will this be any good?

My limitations are if I have to use batterns etc then i will have to move the door way etc!!!! I have about 15/20mm to play with. any thoughts and solutions would be welcome?

 

[trowelmonkey1]

hmmm. first thing to do is to establish why the damp? where's the source? this should be fixed first before throwing money at solutions to cover it up.

sounds like it's a constant problem if you're having efflorescence (salts) regularly, assuming damp proof course is fine, have you checked outside for a bridge of the DPC or a broken gutter etc?

probably not a cold a cold spot as this would only cause condensation and salts suggest water from the wall coming through, thistle dricoat plaster may be an option but this could cause a cold spot if it's an outside wall.

all really depends on the problem though which should be established if possible first.