That's a very tough question to answer. It's the sort of question usually dealt with in agriculture, not home gardening, and then only with certain combinations of materials most likely to be needed. My answer is I don't know and I could not find out with a short Google search. I could guess, but your guess is as good as mine. Jim

Oh heck! Try it ! Learn! Try something new, rent a sprayer and practice on some scraps. Just use long even, sweeping strokes. have fun!

I ordered and received the Paint Zoom Platinum 9/14/2011. I even ordered the extra bottles, strainers, tape and plastic sheeting. I never used it, until yesterday (8/26/2012). I had a small wall to finish painting and I didn't want to use the roller to finish it. So I watched the dvd it comes with and read the instruction manual. When I removed the hose out of the box and attached the one end to the machine, the hose came out of the gasket. I tried to thread it back it, and it appeared to be okay. But when I started to use the machine, after five minutes, the "compressor" got very very hot, and thus, so did the hose since it was hot air blowing through it. Seriously hot air. Then the hose came out of the gasket again. So I twisted it back in, and secured it to the gasket with tape. I began my wall again, and behold, the hose came apart from the gasket attached to the paint spray gun. So I did my best to twist it back into that gasket, and taped it securely as well. I was able to finish my very small project. It did paint, so long as all the hoses stayed on. But, if I had that compressor hanging off of me, I am afraid I would have been burned. It seriously gets very very hot. I wouldn't run it more than five minutes at a time if I ever use it again, which I highly doubt. Also, the power cord is so very short, that you need an extension cord if you are going to reach anywhere higher than two feet off the ground and one foot from my paint area. I didn't use an extension cord, but you will need one. The hose itself is way too short to have a decent reach if you chose not to hang that device off your body. I had a step ladder so I didn't have to hold it. When you shut it off, the switch is also very hot. I do feel ripped off due to the above reasons. I would highly recommend this product be investigated for safety and quality. For the price I paid ($129.84 plus $19.95 shipping...$9.95 -3 containers, $4.95 for two cloth, tape and five strainers and tax of $12.66) Total of $187.30, it never should have done this within 20 minutes of using the product. There is a 5 year replacement warranty should the product have a defect in materials or workmanship, they state they will repair or replace it without charge to you but a shipping and processing fee may apply. They give their Customer Service Number as 800-431-1902. I don't feel I should be paying anything to correct their defective product. I seriously suggest staying away from this product and if need be, purchase a low end professional model instead.

If it has not been painted before, then spraying is recommended. If it has been painted before with success, then either spraying or brushing/rolling will be fine. Spraying has a finer finish, but rolling is better at getting everything white. The sprayer sometimes does not get every angle perfectly, as often there are jagged edges. Using a 3/4" or 1" roller nap (depending on popcorn length) works very well to get into the grooves. Provided the popcorn doesn't come off, then rolling actually gives a slightly better and more complete look. Note: Brushing/rolling can be done if DIY, even if it hasn't been painted before, but be careful to make sure to test a closet or something inconspicuous first, to make sure the popcorn is not so delicate that it comes off with the brush/roller. Most of the time it wont, but sometimes it will. Other notes are obvious- sprayer covers more ground faster, but with sprayer you must carefully cover and plastic every last thing in the house and all surfaces, cover vents and shut off return system, etc etc, to avoid overspray mist getting onto things it shouldn't. If it is a smaller job, most companies/painters would roll, because a sprayer takes a lot of time to set up and clean hoses after job completion. This can substantially raise the cost of the project. If it is a larger job, most everyone who's qualified is going to roll- UNLESS the house is fully lived in and furnished. When homes are lived in and furnished with a lot of furniture, clothes, dressers, items, objects, picture frames etc around the home, then you simply do not want to spray indoors at all.