Started a big tacking job Monday, swimming pool changing rooms etc etc. about 1200 metres of tacking to do. I'm told i can't do any ceilings yet as they need a polythene membrane first- the chippy's will do this I'm told-. So I start on walls first just to get started. ceilings are 3.6m high and hipped in all directions so not looking forward to them anyway as I'm working alone ! go in next morning and chippy's have stayed late day before to do the polythene, and what have they uesd...... BLACK 1200 gauge dpm ! It's like looking up and into outer space ! Can't see anything apart from about a million staples. Idiots