Using HVLP To Paint Walls. Bad Idea?
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- เผยแพร่เมื่อ 5 พ.ค. 2020
- I've always wanted a spray system for various jobs. I finally got a great deal on a Fuji Q4 Gold kit and learned that, while it's a fantastic tool, the maxim of "right tool for the right job" holds true.
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"By the way... I have no idea what i'm doing!" -- Earned my thumbs up because you charged in anyway. :)
For larger jobs like this, you need a pressure pot. they are usually in the size of 1 or 2 gallon size. Drawback is cost, but if you are doing these types of jobs a lot, then it makes sense.
Thanks for sharing your experience with that sprayer. I sprayed cement board lap siding in the garage before installing them with a HVLP gun on a standard 30 gallon 130 psi compressor. Constantly re-filling the cup and fiddling with the thinning and strainers. A nice finish, but not the right tool for the job. Regarding flooding, I finished the basement in my last home in NY. Framed it in metal studs, insulated with rigid styrofoam board and railroaded non-cellulose or paperless drywall. Railroaded means laid the boards down 8 feet wide, 4 feet tall rather than stand them up. By doing so, mold has literally nothing organic to eat or grow on. It got flooded with less than an inch of water in ten years of ownership. Dried it out, zero mold. If you get a flood in that garage, you need to open the walls and load up a pump sprayer with bleach. The wood framing will mold, and it will crawl up the insulation through capillary action. You can also frame the walls with structural steel studs. Overkill? absolutely. Thanks for sharing your real experience, far more informative that the over produced informercials posing as content.
Its not the painting with an hvlp thats the problem,painting wood with thinned paint,the wood will be soaking it up,perhaps a sealer before top coat,and painting an area that big with one litre pot....really
You got it. If that was sealed, paint wouldn’t look like that
Thanks for pointing out the issue up/down the ladder and filling the small paint cup. i just traded my HVLP sprayer for a airless type with the paint on the ground and long hose. no climbing for me thanks again for the heads up.
Airless sprayers are gods gift to the painting world. (I work on Graco units for a living.)
Very very good and informative video!
Very helpful. Thank you.
When painting wood you use more paint on first coat and wood soaks it up really well on first coat so need to go back over it 2 to 3 times to get a final finish. Also you should buy a 5 gallon paint jug when you do paint this much so you don't have to open multiple can't. I have a 1.5 gallon electric pot spray and I wish the tub was bigger but using the 5 gallon paint jug makes it alot nicer to just pour and fill fast
@@artv4nd3l4yyeah I'm no professional painter but yeah doesn't everyone know they need to use primer first?
I have a greyco (pump/hose). Small home unit. AWESOME, for what you are doing there. You want want want really need a pump/hose airless.
I used the same stuff today on my garage, 24x9 wall with osb , took 1 gallon to do 1.5 coats .. you can see a huge difference on my 2nd coat for half the wall . But I used a thick roller and brush for priming . I'll use my sprayer for painting the finished coat , I really wanted to minimize waste. My finish coat will probably be a gray and stripe of black . Match the colors in my epoxy floor kit I got ..
I think you should of left it thick for best results .
I'm just doing some first-time spraying myself, and liked the learning curve of this older video. I've plenty experience conventional painting and realize you hadn't seemed to grasp that you watered your primer by 40%, yet were surprised it didn't cover in one pass? The beauty of spraying is a quick, thin coat dries so fast one can re-coat by the time the wall is done first coat, minimizing set up time. Also, in hindsight, could you have relatively easily rigged up an "arm" to hold the sprayer -thus relieving your arm?
So can we use it for wall
What tip your using?
That's good for furniture or cabinets. You'd be faster with the roller in this case. And better coverage
Are you putting the unit for sale now?
great video thanks! I'm going to buy an airless Graco X7
did you buy your graco x7? did it work out? im thinking about buying one today.
The camera doesn't show enough detail, but that spray pattern at 7:40 looks like the work of a very high quality tool.
Like everyone else said, an airless sprayer would have been the better tool. Did you end up buying one?
If so, what were your thoughts on both?
I love my Graco Magnum x5. Seems to be more capable than anything I need around the house. FFLP tips seem good enough for me, and I like the variety in width and orifice size (though pricey at $30-40 each). I've sprayed OSB with it, my only complaint was that bits of the OSB peeled when wetted with paint; not really a problem with the machine. I've found it is helpful to have a spotter watching you; it is very hard for me to see what I'm doing when standing a couple feet from the work - with a microscopic perspective. Looks like part of this inconsistent coverage may have been various dilutions or spray/pressure settings when using multiple pots, or maybe distance to work. I gave mine at least 2 coats, but I was using some questionable/old/thinned commercial-quality SW interior.
What I don't love, is that it's kind of a brute. I haven't figured out how to do fine detail work with it (smallest tip I've used is a fflp210, but still... a bit like trying to paint a window with a 2-3" paint brush. You can do it, but it isn't nice, and there must be a better tool to use (maybe a fflp1XX would solve the problem, idk, but 210 is pushing it for latex afaik - I don't see many people talking about 1XX tips). Still good enough for flat 3-4" trim, or stuff with minimal detail or care about appearance). If there was a volume control, it'd be perfect.
The HVLPs have seemed pretty nice in that regard - it seems nice to get a spot pattern 1-3" in diameter, and be able to control volume output.
To anyone else, you're **never** supposed to spray at your flesh (google subdermal paint injection), idk if that applies to both airless, and HVLP, but maybe it's worth a search. An airless also saves you from potting paint (you just stick the pickup hose into the gallon or 5 gallons of paint. (or your mixing bucket). I've seen people paint doors with them, so I'm sure it can be done. But I can't speak to the comparison between HVLP/airless; I've only used 1. Usually available for
You sprayed plywood with no primer, not sure what you were expecting on the first coat?
No, I was spraying it *with* primer ...
probably just needs more coats for full coverage
Kilz is not a go to primer. You’re shooting onto wood OSB not gypsum.
And alot of professionals use extentions on their spray guns so they are able to spray more surface area before having to move to a area of the wall
An extension is pretty common on an airless sprayer, but I've never seen one for an HVLP sprayer. Do you have an example?
@@CliffsGarage It's called a pressure pot. The larger ones require a small compressor though
I had nothing but problems with my Fuji. Tip leaked like crazy no matter what...tighten the nut....untighten the nut...replace the needle...still leaked. Hose connection broke on 3rd use. Fuji must know they tip leakage is a problem because they have addressed it on their site...which just tells you to loosen the nut. Try sanding...adding primer...resanding...and then putting on your first coat only to have the tip leak onto the ready to go surface. Nightmare.
I had to pause the video after the 1st 30 seconds Where you said by the way I have no idea what I'm doing
And had to subscribe
Been there, done that. Work perfectly. BUT for large areas I strongly suggest other methods. Like airless, etc. Your compressor really take a beating. Either case the results can be quite good. The size of the cup for a "one of" is not an issue. Just refill as needed. I'm not sure HOW you were doing it, but refilling the cup is a very swift task!
For a professional or daily (frequent) usage, well that's another matter. ;-)
My largest project was painting a shipping container, all surfaces except floor. Human need for resting and the compressor resting (cooling) were both welcomed and needed. Notice the compressor was kept on the shade. Even than it reached interesting temperatures! LOL
For surfaces like that, which are basically a "sponge". Apply sealer and primer before your actual top coat(s)... All rather standard procedures! The OSB absorbed a lot of that initial layer of paint, that's normal.
You could get a bottom siphon feed gun and run a hose directly into the paint source, no?
Possibly, kind of a pain to move all that around, tho. An airless sprayer has the ability to mount the paint container directly onto the unit and a really long hose.
1/2 gallon to cover that area is way too little. I would expect 1/2 gallon of primer to over 4 sheets of plywood. I have the mini mite 4 and have painted small areas of wall with it. if I was doing a large area of wall like you are I would use an airless sprayer
Wasn’t that a primer? The primary function of a primer is to bridge the gap adhesion between material and paint. So after this, you should have to more White paint coats. I don’t expect you will notice bleed through.
Maybe you should tell us how you were able to purchase the unit for $150, because I’d love to hear that story, and maybe try to duplicate it myself.
It was at a garage sale. IIRC, the woman's husband had died the previous year and she was selling off everything to go live with her daughter. Lots of mid-level tools and equipment, most of which I already had. But this totally unused unit was hidden in the back and marked at $150. I told her it was worth at least $700 but she insisted that that's how she'd priced it so she was sticking to it.
If you had solid scaffolding, which you can rent, the first coat would have came out more evenly. Balancing and spraying is treacherous
So this is bad as compared to using what?
An airless sprayer
Thats why they use drywall and mud.
Painting OSB is not a good idea to begin with. One side is treated (wax) the other is not. Regardless, it's not designed to be an exposed surface in any application.
The other portion of the shop has several thousand square feet of painted OSB as the finish layer. 22 years, no issues at all.
Totally disagree, your machine is just fine. Inexperience and not understanding how it works is your issue. Primer should not make your wall pure white. But when you paint with the finish paint it will look perfect. For the 10,000 sq ft of painting you need a much bigger machine like a Graco Magnum X7 Electric Stationary Airless Paint Sprayer or a Titan if you,re trying to complete the project within 2 days.
Airless shoots too much paint for a beginner.
I was a total beginner and I've used it for multiple jobs, including a full repaint of a rental house, with no problems at all. Beats the hell out of rolling.