SKU: IW-Plaster-1-1.

Rammed Earth


Rammed earth is an environmentally friendly wall method, material, and finish.  It can even be produced from particular soils from the Western United States that have air purifying properties.  It provides an organic look, while also controling humidity — extracting humidity from the air when levels are high, and releasing humidity when the air is dry with low humidity.  This is a 100% eco-friendly and green material.  Price is per square foot.

Gast has been working with rammed earth walls for over 20 years.  This building method is perfect for interior and exterior residential applications when you want a green solution.  It is an eco-friendly material made from local soil with air purifying, deodorizing, and humidity-controlling properties not possible with most wall materials.  It is a green alternative to drywall, paint, and wall paper, and an ideal material to promote a healthy lifestyle.  These walls are currently available in a range of earth-toned colors.  Custom finish patterns can be achieved.


Weight 10 lbs
Dimensions 12 × 12 × 12 in



Exterior Wall, Interior Wall


Beige, Brown, Cream, Gray


Rustic, Satin, Textured, Trowel


Classic, Contemporary


Earth, Well

bring your Interior to life with SUSTAINABLE surfaces:

The finish materials you use for your interior surfaces become some of the most important focal points.  Using an environmentally friendly rammed earth wall can add the unique tactile effect of an organic material, that also exudes beauty, sophistication, and luxury.  Take advantage of our carefully curated eco-friendly materials to introduce a new standard.

  • Eco-friendly
  • 100% natural product
  • Non-toxic
  • Air purifying
  • Odorless
  • Low VOC
  • Controls Humidity
  • Keeps spaces comfortable while reducing the use of air conditioning or heating

Rammed earth can be used for indoor and outdoor wall surfaces.

Color Range

Rammed earth is a natural material with colors based on the location it comes from and the minerals available.  While earth is often brown and beige, we offer it in a variety of earth tones.

Rammed earth can exhibit mild color variation.

TEXTURE & Visual Pattern:

Rammed earth’s manual application allows for visual variations and a range of aesthetics.  It can be smooth, striated, or applied with a rugged texture.

Carefully selecting the pattern you desire for your project is recommended to achieve the best result.  We are available to discuss your options.


At our company’s core, we believe the built environment should be constructed with sustainability in mind.  That way we all live in a healthier world.  We are doing our part by supplying and searching for materials that lighten the load on our planet.

There are many green or environmental aspects of using rammed earth.  First, this product can be made with any local earth, so long distance transportation is not needed, reducing greenhouse gas emissions.  Also, the quarrying is hundreds of times more efficient than stone because we only need the powder and not slabs.  Using local materials is ecologically friendly, and ties the building to the local landscape.  We recommend rammed earth in any home where you are looking for a natural vibe.

Using rammed earth means less lumber, steel, and concrete to produce, ship and install.  This translates to decreasing the use of our most widely used natural resources.

Historically in the building process, there has been inherent waste of material.  This material is made with an additive process, not a subtractive method, so there is no waste.  The material can also be repurposed when finished, or returned to the earth.  This translates to no polluting waste.

Rammed Earth does not contain any VOCs or other compromising chemicals or toxins.  It comes naturally from the earth, so it is inherently sustainable.  Rammed earth is also very low maintenance–no need for paint, sealers, or harsh cleaning products.  There is no off-gassing from toxic materials, finishes, or adhesives.  Rammed earth has been used in construction for thousands of years, and is still used in relatively the same form.

abrasion resistance: LOW

Rammed Earth has low abrasion resistance.  Light scratching will occur with exposure to abrasive items. The finish can damage as a result of this scratching.

Absorption: HIGH

Rammed Earth has a high absorption rate, which is an advantage for interior residential applications.  However, oil and highly pigmented liquids can penetrate and stain.  To reduce the appearance of stains, wipe up spills immediately.

Acid Sensitivity: Minimal

Rammed Earth is minimally sensitive to acids.

U.S. Measurement
International measurement
Mohs Hardness: 3-4
Bulk Density 2,580 kg/m³
Water absorption at atmospheric pressure 1.48%
Breaking strength 990 N
Slip Resistance 33/35
Flammability A1fl/A1
Frost resistance 6.4 MPA
Resistance to thermal shock .03%/3.5%
Resistance to abrasion 15.9 MM
Uniaxial compressive strength 155 MPA
Flexural Strength 6.6 MPA

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