Fresco Painting Mediums for Sale | Lime Plaster Suppliers

1. Fresco Painting Mediums For Sale | Lime Plaster Suppliers Natural Pigments manufactures and distributes rare and hard-to-find materials for fine artists and decorators. We specialize in supplying artists' materials that were used in historical painting since prehistoric times up to and including the 20th century. We constantly search for materials and products of the finest quality so that we can bring them direct to you from the source.

2. Aged Lime Putty Natural Pigments Aged Lime Putty is of the highest purity for intonaco and other plaster coats. This lime putty comes from our own lime pit, aged at least two years and has been extensively tested for use in fresco. With lime of this purity it is possible to create brilliant fresco painting that will have excellent permanence. Also, can be used for a variety of plaster finishes, such as marmorino, Venetian stucco, scraffito and scagliola. Slaking quicklime for a long period of time enhances the workability and body of lime used in construction and restoration applications.

3. Slaked Lime (Calcium Hydroxide) Perfect medium to make lime putty, milk paint, limed resin Calcium hydroxide, traditionally called slaked lime, hydrated lime or pickling lime, is a soft white powder and obtained when calcium oxide (called lime or quicklime) is mixed or "slaked" with water. The name of the natural mineral is portlandite. A suspension of fine calcium hydroxide particles in water is called milk of lime. The solution is called lime water and is a medium strength base that reacts violently with acids and attacks many metals in presence of water. It turns milky if carbon dioxide is passed through the solution, due to precipitation of calcium carbonate.

4. Pumice This grade of white pumice is used to polish surfaces on wood, and added to chalk and gesso grounds to give it tooth. Our pumice is a near-white, milled volcanic glass that has many uses in fine arts. Add pumice to paint to make it appear mat when dried, to add texture and to increase body without tinting the color. Pumice can also be added to grounds to give it "tooth" and as an abrasive to smooth and polish substrates and grounds. This grade of white pumice is used to polish surfaces such as wood, and added to chalk and gesso grounds to give it tooth. This grade of pumice is white so it will not discolor grounds.

5. Perlite Perlite is a amorphous volcanic glass that is processed so that it is greatly expanded and white. It can be used in painting grounds and to increase the bulk and give texture to paint. Our perlite comes from the Nu-Alexite and Socorro perlite deposits located in New Mexico, U.S. The ore is formed by magmatic processes, usually in "domes," that over geologic time periods entrap water into the matrix. The mechanism through which this occurs is not completely understood, however, it is this entrapped water which gives perlite ore it's unique ability to expand. 

6. Pozzolana Pozzolana is ground vocanic ash composed of siliceous and aluminous material from Pozzuoli, Italy. Use in fresco painting to make hydraulic plaster for stronger walls. Pozzolana, also known as pozzolanic ash (pulvisputeolanus in Latin), is a siliceous or siliceous and aluminous material which reacts with calcium hydroxide in the presence of water at room temperature (cf. pozzolanic reaction). In this reaction insoluble calcium silicate hydrate and calcium aluminate hydrate compounds are formed possessing cementitious properties. 

7. 291 Shell Lane, Willits CA 95490 (888) 361-5900 www.naturalpigments.com