Putting plasterboard up on a studded brick wall

[robbieee]

Put some plasterboard onto a stud frame which is onto a internal brick wall. The problem is that this brick wall is pretty cold to the touch as its an outside wall. Should I put insulation in? Or polystyrene sheets? Or leave as is?

It's just plain old gyproc I used, no foil back or anything.

Also it's my bathroom, I will be tiling directly onto the plaster board

 

[freddiemercurystwin]

Put some plasterboard onto a stud frame which is onto a internal brick wall. The problem is that this brick wall is pretty cold to the touch as its an outside wall

So is it internal or external?

 

[robbieee]

It's internal but the other side of the wall is the outside of my house. That's why it's cold, just not sure if I need anything in the wall cavity.

 

[foxhole]

It's internal but the other side of the wall is the outside of my house. That's why it's cold, just not sure if I need anything in the wall cavity.

 

[robbieee]

Prob a stupid question but doubt creeps in.

Anyone?

 

[robbieee]

Up

 

[freddiemercurystwin]

Insulation behind the plasterboard will reduce heat loss so do it. There many ways to approach it, you can either get separate insulation and plasterboard and fix it to battens that are fixed to the wall or you could use insulated plasterboard and fix it to the wall with adhesive, these are just two ways. That said if your tiling is going to get wet ie behind the shower then aquaboard would be a better choice, or moisture resistant plasterboard at the very least. There should be a vapour barrier, either a separate one between the plasterboard and the insulation, foil backed plasterboard or if you used insulated plasterboard then the VB would already be in place behind the PB. Most decent insulation will come with a foil face which goes between the insulation and the PB and this acts as the VB.

Polystyrene is not a very good insulator, Celotex or Kingspan are twice as good, though more than twice the price.

 

[robbieee]

So I have plasterboard'd the full room with normal plaster board. I should have mentioned that lol. My aim is to tank the area above the bath where the shower will be.

I don't want to replace any plasterboard, just add something inbeteeen the brickwork and the plasterboard (if needed!). Can someone provide a link for something suitable I can slot inbetween?

Thanks for the help

 

[freddiemercurystwin]

Are you mental?

 

[robbieee]

Why?

 

[freddiemercurystwin]

add something in-between the brickwork and the plasterboard (if needed!). Can someone provide a link for something suitable I can slot in-between

How can anything be slotted in-between the PB and the brick wall?

 

[robbieee]

Insulation? Polystyrene sheets? not sure lol There is space as i have them on studwork

 

[freddiemercurystwin]

Do the studs start at the floor and go up to the ceiling? Does the PB not go from the floor to the ceiling? Or am I missing something? How will you slide rigid insulation in?

 

[robbieee]

Yes they go from floor to ceiling but I can take areas of PB off to slide something in

 

[robbieee]

Anyone else?