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Definitely - for what it's worth the house is essentially empty at the mo, more than happy to spend time masking as what i've done of that to date (repainting all the external window frames and sills) is far less physically exhausting than using the roller (100% with poor technique!)
hvsds-
I looked in to this. I have experience of small scale spray paint application with airbrushes / hvlp guns / cans and masking with tape / liquid mask.
Spraying paint is a bastard, unless you are really good at spraying paint. You become really good at spraying paint by being really bad at it until you learn to be good at it. It's painful. The equipment is also spendy and challenging to keep working. Masking is also hard work and troublesome.
Then you need someone to follow the gun with a roller so to add some texture to the wall you are spraying.
It's not insurmountable, and if you go through with it you will learn a lot. But it's unlikely to be faster / cleaner / less agony than brushes / rollers the first time you do it. The second, maybe.
Howard
Spraying isn't as painless as it sounds. You'll need to spend four or five times as long prepping the place vs rolling.
A lot of painting jobs can be made infinitely better by using better paint / equipment.