I have never used either before so a couple of questions. No nails: I am fixing some short battens to a ceiling approx 12 inches long in just one corner of the room, this will be used to screw a 2nd skin plasterboard (9.5mm) The rest of the room has battens screwed to the joists. Do I just use the no nails or do I have to fix it (batten) on until it sets?
Expanding foam: I have a few dents & gaps etc that I want to fill in, ideally over a period of 2 weeks as the work progresses, must I use the expanding foam all at once , as in will it set in the nozzle and render it useless if I try and re use a week down the road?