I have had a few condensation issues in the past with my exterior bedroom wall which is cold all the time.

I have a cavity wall but no cavity wall insulation as the companies that do this stated my home was unsuitable as there are bits of rubble in the cavity.

I am in the process of redecorating and thought this would time to address this problem hence I have been thinking of dry lining it with some insulation.

Does anyone have any suggestions as to what would be most effective? Can I apply plasterboard straight onto the wall without hacking off the previous plaster as this doing that would be too messy? Would I use foil backed insulated plasterboard for this or is foil not acceptable as it would not allow the wall to breathe? Would it be better to apply battens onto the wall and plasterboard on top with insulation rolls in between?

Any suggestions are much appreciated.

http://www.building-supplies-online.co. ... 1263-p.asp

Try sticking this to the walls using. If you shop around, it comes in different thicknesses. Try sheffins or minsters insulation.

http://www.building-supplies-online.co. ... 1263-p.asp

You could use bonding compound (dri Wall adhesive) but the foam prevents thermal bridging which improves insulation performance.

You can't apply adhesive or bonding to a cold wall!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Using adhesive or bonding to "stick" thermalboard to a wall is bad practise as it tends to fall off!!!!!!!!!!!!!

Batton or gypframe it out and fix thermoboard. A good idea is to fix a vent to allow the new cavity to breath.


(A little knowledge is dangerous)

You are wrong about the cold wall and wrong about the use of thermal plasterboard. You also have no manners.

http://manual.knaufdrywall.co.uk/knauf- ... e_804.html

Thanks for the advise.

I am thinking about using the kingspan insulated plasterboards(as they more reasonably priced) along with dri wall adhesive and a few frame screws to make sure it doesnt fall off....is this ok to do?

Also would I require any other sort of plastic membrane in between the kinspan and wall or can it just go on the old plaster? and what would go in between any joins....some insualtion?

Insulated boards are proving to be very expensive!!!!

I am thinking about using celotex ga4000 insulation boards instead.

Basically...

50mm insulation boards(included is a vapour control barrier) on the wall held together by treated battens and then plasterboard on top, as per instructions. Does anyone know what the difference is between that and battening the walls first and then putting the insulation boards on top and then plasterboards?

Does anyone know if this is ok with my walls i.e. cavity walls and straight on to plaster?

Insulating ovet the top means that you lose more space.

Thanks for the reply, I am not worried about losing space just making sure it's done right and no condensation is created in future.