DIY Doctor UK DIY Forums

Condensation problem on the bedroom wall has led me to lining the wall with a double layer of polystyrene insulation approx now 1/4" thick. This has cured the cond'i problem, but now the tester is do I size the polystyrene with a stronger mix? wallpaper while the size is still moist?or is there another product that will seal the polystyrene layers? I can't afford to do a trial and error as my wallpaper is extremely limited.

No jokes about hot & steamy bedroom antics thanks, I've already done them. :lol:

This has not solved your condensation problem just moved it.
Air movement is the answer.
you want ten millimeter gap under the doors

See the project on the website called condensation Norman.

Indeed Dave, good air circ' & ventillation was my prime concern. Thus I rectified first which left a small alcove type area in one corner of the room, which seemed to suffer from a condensation problem brought on by it being a outer wall and not of brick but tiled roofing /minimal insulation/plasterboard. Fitted cupboards on the adjacent wall have added extra circulation problems (previous owners).
UPDATE: I've gone ahead with a stronger than normal size mix, left to dry , papered over and left to dry at room temp for 2 days . So far I CAN detect hairline splits appearing on the seams , so its looking like another attempt later in the year.

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