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Diathonite Evolution

Breathable lime and cork based insulating plaster for the thermal insulation

Thermal Conductivity

λ = 0,045 W/mK

Thanks to the right mix of carefully selected natural raw materials, the product achieves high levels of thermal insulation.

Thermal Diffusivity

0,125 x 10⁻⁶ m²/s

The low diffusivity value (α) indicates a high degree of insulation from heat and therefore greater comfort and savings for summer cooling.

Fire resistant


Classified in class A1 according to UNI EN ISO 13501-1. No flame generation and no smoke emission.


μ = 4

Thanks to the high value of permeability (μ), the humidity of the indoors is perfectly balanced, thus avoiding the formation of moulds and condensation



The cavities and gaps in the plaster allow moisture and condensation to be absorbed and disposed of.


360 ± 20 kg/m³

Macroporous structure with high air content guarantees excellent performance in terms of insulation and absorption of excess moisture.

Mechanical Strength

1,5 N/mm² // 217.6 lbf/in² (psi) (Bending)
2,95 N/mm² // 427.9 lbf/in² (psi) (Compressive)

High strength, durability and stability over time.

Sustainability certifications

Identifies Diathonite Evolution as a low environmental impact product with a sustainability that involves all phases of its life cycle.

Recognizes that Diathonite Evolution has the ability to contribute to healthier spaces, healthy air, better thermal comfort and energy saving.

Performance certifications

The CE marking identifies Diathonite Evolution as a product complying with European construction standards and the rules governing its distribution and use.

The UKCA marking identifies Diathonite Evolution as a product complying with UK construction standards and the rules governing its distribution and use.

SSc Heat Island Reduction – Option1
MRc BPDO – EPD Option1
Sourcing of Raw Materials – Option 2
Material Ingredients – Option 2
EQc Low – Emitting materials
LEED v4.1 BD+C e ID+C
SSc Heat Island Reduction – Option 1
MRc EPD – Option1
MRc Sourcing of Raw Materials
MRc Material Ingredients Option 2
EQc Low – Emitting materials
X01.1 Material Restrictions
Restrict Asbestos
X02.1 Interior Hazardous Materials Management
Manage Asbestos Hazards
X01.3 Material Restrictions
Restrict Lead
X05.2 Enhanced Material Restrictions
Part 2 Select Compliant Architectural
And Interior Product
X06 VOC Restrictions
X08.1 Materials Optimization – Select Materials With Enhanced Chemical Restrictions option 1

Insulating the building and maintaining the breathability of the wall/ceiling

It helps walls in older buildings dry out thanks to its capillary active nature

  • Excellent thermal conductivity
  • All-natural ingredients
  • Breathable and Capillary active: absorbs and releases moisture and keeping walls dry
  • Easy thermal bridge solution
  • Euroclass A1 fire resistance
  • Quick and easy to apply on different types of substrates
  • Safe and eco-friendly
  • Can be used internally and externally

Royal Palace of Évora: a revolution of the living comfort

“Architecture means building environment for the people, universities, museums, schools, concert halls: these are all places that become outposts against barbarism.”

Renzo Piano

Unlike dry board systems, Diathonite Evolution is malleable and flexible when being applied.

The magic of materials

These all-natural ingredients are sympathetic to the conservation requirements of listed buildings and will contribute to LEED credits.

Hydraulic Lime

The ancient wisdom of Mediterranean building

Natural fibres

The great circular challenge of reuse

Diatomaceous earths

The hidden treasure of the oceans


An original mix of strength and lightness

Silica powder

Inert and ultralight spheres


The sustainable lightness of breathability

The insulating action of air

Diathonite Evolution is formulated with materials that have high porosity. Air fills in the free spaces within the structure and originates a great thermal insulation action. Let’s use the talent of nature.


Thermal well-being formula

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designs the home of comfort

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