American Clay Plasters

 As awareness increases by homeowners, designers and architects alike to use healthier and more natural materials for our interior spaces, we decided to chat briefly about one of them: American Clay Natural Earth Plasters. 

In brief, clay plasters were used extensively in buildings of all sorts, up until the 19th century. Their disappearance was partly an effect of the separation of agriculture from construction, as a result of the industrial revolution. The disappearance was not because the material was primitive or had been failed but because of the changing economic conditions of the time. This is an important fact to remember when looking at clay plasters and also lime plasters and lime mortars in practice.

Clay plasterslime plasters and lime mortars have many complex qualities and require a proper understanding. Given that understanding they can perform to a very high level, and are durable and attractive in any application.

The American Clay Plaster range enables the user to create surfaces reminiscent of classic interiors throughout history. You can bring the natural warmth and sunshine of Provence into your kitchen...take a bath surrounded by the tranquil and earthy feel of a Japanese to a vibrant Tuscan Villa every time you enter your space, the possibilities are endless with American Clay Plasters.


 A Natural Alternative. American Clay plasters are a natural way to finish any interior. Non-toxic and made in the U.S.A., their plasters are a healthy alternative to paint, wallpaper, cement, acrylic and gypsum plasters. American Clay offers thousands of colors and unlimited textures with depth not found in other finishes.

Why? Create A Healthy Room for you and your family. Clay plasters help regulate humid air inside buildings by absorbing and releasing moisture naturally --responding to changes in the interior space. Warm to the touch in winter and cool to the touch in summer, these plasters bring healthier comfort to interior spaces. There are many other great benefits such as...

  • VOC's (Volatile Organic Compounds). These plasters are VOC-Free.

  • Mold Resistance. 0% mold growth, per test results from procedure ASTM D3273-00. American Clay Plasters' have great humidity bufferring qualities.

  • Flame Spread. ASTM E84, rating of 5; UBC Class I. NFPA Class A. Smoke development 0.

  • Sound. ASTM 423-07; SAA: 0.09; NRC: 0.10. ASTM 90-04; STC:31.

  • Permeability. ASTM E-96; 45.76 perms; 16.91 grains/hr-ft2.

  • Recycled Content. 72% post industrial by weight.

  • Carbon Footprint. 0.026 pounds of CO2 per pounds of product. (In comparison, Paint is 0.729 pounds of CO2 per pounds of product.) Source: Inventory of Carbon & Energy (ICE); Published by Geoff Hammond & Craig Jones, 2008

  • USGBC LEED Credits. American Clay plasters can contribute to your project under the LEED-NC rating system, version 2.2. Up to 10 LEED credits may be contributed. 

  • Zero Waste! There is no waste; excess plaster can be dried and re-hydrated for repairs.

Scroll through our project galleries at the top of our homepage to see just a few examples of the beauty and diversity of these American Clay Plasters.