How Do You Thin a Water Based Primer for a Spray Gun

If it sprays thickly or with difficulty, you do need to thin it. Add a small amount of clean water to water-based primer or a small amount of mineral spirits to oil-based primer. Keep track of how much you are adding. Stir it in thoroughly, and test spray the board again.

How do you thin water based primer?

Use Water to Thin Water-Based Paint Add an ounce or two of water to the can and then thoroughly stir. Continue to add water in small increments until the desired consistency is achieved.

How do you dilute water based paint for a spray gun?

In general, thinning latex paint should be done at a minimum of 10% or 1 gallon of paint to quarter cup water. This is done if you are using anything besides the airless sprayer. However, if you are using an HVLP sprayer or handheld system, you might have to increase your water percentage to 20-30%.