On 14 Jan 2004 04:25:12 -0800, 4-LOM wrote:

I'm planning to dry line the walls of a room with 2" battens, 2"
polystyrene between them and 1/2" plasterboard on top.

erm, no mention of any DPM or ventilation. You are just asking for
condenstation to form on the, now cold because of the insulation, wall
behind polystyrene.

--
Cheers
Dave. pam is missing e-mail