Re: LVLP versus HVLP spray guns?
I would recommend saving yourself the hassles of all that masking for zero gain. In the time it will take you to mask of the room, you can have it brushed out, probably several coats. Masking materials to cover an entire room would also be expensive.
Using a brush is easy, especially once you've mastered the technique of cutting in.
Additional food for thought. If you hadn't planned on protecting the walls above base and around doors and window trim, this would be a mistake, as the over spray would affect the sheen on the walls once they get painted too.
- If using semi-gloss on trim, which is typical, the sheen will shine through flat paint that is typically used on walls.
- Additional layers of paint on the walls around the trim will seal the wall in these area, while the main body remains porous, again affecting the overall sheen of the paint.
Spraying your doors I can agree with, and I would recommend tenting one room or an area in the garage to spray them in. I have always used an airless sprayer for this, so I can't answer your questions about HVLP or LVLP systems. The one thing that I would caution is that the system you choose can shoot the paint you intend. I believe that these systems are primarily for light bodied finishes like a polyurethane, lacquer, and such. Latex and alkyd paints are heavy bodied and are better applied by a pressure system than a siphon system.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!