How much can latex house paint be thinned with water (percentage)before it becomes unusable? (for spraying)?

Depends on the sprayer. If you are using your average Wagner Power Painter you need very little whatsover. You should never use water anyway, there are products on the market that will not dilute the ';value'; of the paint. You can find them at any major harwarde store.How much can latex house paint be thinned with water (percentage)before it becomes unusable? (for spraying)?
You really don't need to thin latex paint for spraying, but it depends on the quality of your sprayer. I would recommend not thinning it more than one part water to four parts paint at the most. The best thing to do would be to spray (without thinning paint) and then backroll to produce an even finish. If you have never used a paint sprayer before, practice on a scrap board first before you try painting your house.How much can latex house paint be thinned with water (percentage)before it becomes unusable? (for spraying)?
Read the directions. Most of them explicitly state ';DO NOT THIN';
Only thin the paint if you have to, that is it won't feed through your sprayer unless you thin it. I've painted when it's fairly cold out, and the paint seems thicker then. I have a fairly good airless sprayer and used good paint. More expensive paints are thicker, there is less water in them. The bargain basement paints have alot of water in them. I have had to add 1 gallon of water to 4 gallons of paint to get a good flow rate. That means if your starting with a 5 gallon bucket you're going to need another empty bucket just to mix in. With paint, and most things, you get what you pay for. Don't thin your good paint, but you might have to due to cold weather or an underpowered sprayer.

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