Putting up 'Warm Board' to insulate one bedroom

raspberrypi67

Hi Folks,

I,m sure someone has put up warm board in a room and I need some advice first before I do this.
I have a small bedroom that has 2 wall that are exposed. No insulation as it dates back to the early 80's! Mould on one wall, probably due to the cold points due to the fact that cement was used to keep the plasterboard up to the main wall.
My choices are to either take off all the plaster board or to leave well enough alone and just place the warm board over the existing one. Whats best in the long run? Does it matter necessarily?
I'm capable of doing all this work myself. I'm worried though about mould still forming behind the warm board if I leave the old stuff there in place. Lack of Oxygen might prevent this??

Any comments ? Thanks in advance

Rich

Pete67

Personally speaking I would remove the old plasterboard if it is damp/mouldy. You need to find out why it is damp, it may just be condensation from the cold wall surfaces, but make sure nothing is leaking into the wall from the roof or from outside. Then you need insulation, a vapour barrier and then plasterboard in that order. The warm board may contain all three layers which speeds up installation. You might still need a plaster skim to finish it off and hide the joints etc. Have a look at the Kingspan website for suggested materials.

raspberrypi67

Thanks for that. Yes I was just thinking the same after watching a bit of a video on youtube, re: the vapour barrier.
Cheers

Pete67 wrote: »

Personally speaking I would remove the old plasterboard if it is damp/mouldy. You need to find out why it is damp, it may just be condensation from the cold wall surfaces, but make sure nothing is leaking into the wall from the roof or from outside. Then you need insulation, a vapour barrier and then plasterboard in that order. The warm board may contain all three layers which speeds up installation. You might still need a plaster skim to finish it off and hide the joints etc. Have a look at the Kingspan website for suggested materials.

Calahonda52

Op:
Can you take off the wall vent and post a few pictures of what the setup is? Just indulge me and I will explain why when I see it

If you use what P67 might call the 3 in one board, whats the plan for services in the insulated wall

raspberrypi67

Hi There,

Yes, I will tomorrow ok. Its a cavity block fyi.

No services on the wall, either wall.

R

Calahonda52 wrote: »

Op:
Can you take off the wall vent and post a few pictures of what the setup is? Just indulge me and I will explain why when I see it

If you use what P67 might call the 3 in one board, whats the plan for services in the insulated wall

mashed13

raspberrypi67 wrote: »

Hi Folks,

I,m sure someone has put up warm board in a room and I need some advice first before I do this.
I have a small bedroom that has 2 wall that are exposed. No insulation as it dates back to the early 80's! Mould on one wall, probably due to the cold points due to the fact that cement was used to keep the plasterboard up to the main wall.
My choices are to either take off all the plaster board or to leave well enough alone and just place the warm board over the existing one. Whats best in the long run? Does it matter necessarily?
I'm capable of doing all this work myself. I'm worried though about mould still forming behind the warm board if I leave the old stuff there in place. Lack of Oxygen might prevent this??

Any comments ? Thanks in advance

Rich

Had the same mold and dampness problem on the walls which was caused mainly by the condensation, rented semi det 80s property with no cavity insulation... There was only wallpaper on the wall, they glued and pinned 80mm insulation boards directly on the moldy wallpaper surface ( not sure how long will it last this way, at the corner where insulated external wall meets uninsulated party wall mold started to appear already... )
The process seemed very straight forward, drill, pin and skim. Only tricky parts are around the windows and if there's any rads or sockets on the walls, which might need to be moved. I'd suggest you take off old plasterboard and if you are handy with DIY read, watch few tutorials and give it a try.

raspberrypi67

Thanks, will do.

Still have to take that photo to show....

I do have a radiator and window on one of the walls that I intend to do. I guess it would be best to just strip off the old plaster plaster board. I dont want thickness problems with window sills and pipes etc. Now that I think of it, th eplain wall is an ok job but the window wall will be a pain in the ****..!!

Actually, now that I think of it, an electric shower was put in well before we moved in. Not into the room but the power cable comes down from the attic via the ceiling through the floor and down into the esb box in the room below. So I could potentially hide this cable.
How should this be done ?

Cheers

R

mashed13 wrote: »

Had the same mold and dampness problem on the walls which was caused mainly by the condensation, rented semi det 80s property with no cavity insulation... There was only wallpaper on the wall, they glued and pinned 80mm insulation boards directly on the moldy wallpaper surface ( not sure how long will it last this way, at the corner where insulated external wall meets uninsulated party wall mold started to appear already... )
The process seemed very straight forward, drill, pin and skim. Only tricky parts are around the windows and if there's any rads or sockets on the walls, which might need to be moved. I'd suggest you take off old plasterboard and if you are handy with DIY read, watch few tutorials and give it a try.