We Value Your Privacy

We and our partners use technology such as cookies on our site to personalise content and ads, provide social media features, and analyse our traffic. Click below to consent to the use of this technology across the web. You can change your mind and change your consent choices at anytime by returning to this site.

Update Consent
Loading ...

How to calculate the viscosity for spray painting

Paint viscosity is extremely important when you are spray painting. Failure to have the right viscosity of the paint will lead to the paint either being too thin or too thick. When the paint is too thin you will leave marks and streaking on the painted surface. When the paint is too thick it will clog the spray gun, leaving a rough finish. Fortunately, with the right supplies and directions you can quickly and accurately calculate the right viscosity for the paint.

Loading ...
  1. Read the packaging of the paint you wish to thin. Read the instructions to see if the paint can be thinned with water or a specific solvent. All latex based paints can be thinned with water, most oil based paints can be thinned with paint thinner. Some speciality paints require special solvents to thin the paint.

  2. Pour all the paint you want to thin into the paint bucket. It is important that all the paint cans are mixed together in the bucket to ensure a uniform colour. Keep a small amount of extra paint on hand, so you can add it later on if the paint becomes over thinned.

  3. Thin the paint by adding 20 percent of the amount of paint poured into the bucket with the proper solvent.

  4. Mix the paint vigorously with the paint mixing stick until the solvent has been completely mixed into the paint.

  5. Add a small amount of the mixed paint into the spray gun and apply it. If you notice that the colour is transparent then you must add at least five percent more paint into the paint bucket and remix it. If you notice the paint is still thick add five percent more solvent to the paint bucket and retest it. Keep adding more solvent or paint until the paint flows easily out the spray gun and covers the surface with the colour.

Loading ...

Things You'll Need

  • Paint bucket
  • Paint mixing sticks
  • Water
  • Paint thinner
  • Spray gun

About the Author

Louis Gutierrez began writing in 2010 for various websites, specializing in real estate, construction and electronics. He has over 10 years experience running and operating various successful businesses in these fields and holds a Bachelor of Arts in business administration, graduating magna cum laude from Florida International University.

Loading ...