How To Make Interior Paint Thicker?

Enamel paint can be thickened to achieve the desired consistency and texture for various applications. Oil paints are commonly used for thickening, and can be thinned with commercial agents like hydroxyethyl cellulose (HEC) and drywall joint compound, or household agents like salt. To thin oil paint, add a half cup of water per gallon of paint and stir well with a stick. For oil-based paint, thin with mineral spirits or turpentine in a container.

To thin latex paint, first stir the paint thoroughly, then gradually add 4 oz (118 ml) of water and mix until combined. Test the thinned paint by pouring it through a test tube. Latex paint thickens over time, creating an uneven or streaky finish on your next project. To achieve the proper consistency, heat cornstarch and water in a pot, then heat the mixture on low heat.

Baby powder or Plaster of Paris can be used to flatten and thicken paint, but thickening is not recommended. Plaster of Paris can be created by mixing 6 parts of water with 1 part of HEC to create a slurry, which is then mixed into the paint. PVA glue in small amounts will thicken water-based paint, but it will be a harder finish losing some elasticity.

Hydroxyethyl cellulose is a thickener used for interior and exterior latex paints, and can be created by mixing six parts water to one part of HEC. This method can help achieve the desired consistency and texture for your artwork.