Quote Originally Posted by Ian Grant View Post
You need much more specialist equipment. This is an area where I have considerable experience (over a decade) as we sprayed emulsion commercially .

First you need a good spray gun & compressor, a garden spray is inadequate, then you need good fume extraction and an airline respirator so thet the air you breathe is from outside the darkroom, then you need a means to develop, fix, wash etc which will require a lot of water and drainage. The compressor needs to be isolated from the darkroom so it feeds clean air to the airline respirator which is fed by the same airline as the spray gun.

We used an emulsion which had been designed for spraying, we made our own, and regularly worked around the size you're looking at as well as larger.

Thank you for your answer!

I read carefully what you said and I understand your point, to be honest I don't have that kind of equipment, but it is also true that I'm not looking for the most polished finish.
I do have a well ventilated big space, and I was planning to use some gas mask as extra precaution.
My idea was also to do developing, stopping and fixing spraying. I'm really stubborn and I'm going to test this procedure in any case, but I will be happy to know if you think it is possible to achieve something and if not why?