- Ultra-low thermal conductivity: λ = 0.037 W/mK
- Breathable and vapor-permeable — prevents moisture buildup
- Lightweight and easy to apply
- Fire-resistant (Euroclass A1)
- Contributes to LEED, WELL, and BREEAM credits
- Suitable for interior and exterior walls and ceilings
- Enhances indoor comfort and air quality
- Can be applied on top of old plasters
- Ideal for round, curved or complex geometric structures

What is Diathonite Thermactive.037 used for?
It's designed for ultra-high thermal insulation in residential, commercial, and historic buildings. Ideal for walls, ceilings, and energy-efficient renovations.

How does it compare to other insulating plasters?
It has the lowest thermal conductivity (λ = 0.037 W/mK) in the Diathonite line — making it the most thermally efficient.

How thick should it be applied?
Typically 1.5–4 cm, depending on structural and insulation needs. Can be applied in multiple layers.

Can it be used on exterior walls?
Yes — but it must be protected with a compatible topcoat like Argacem or Decork Design.

Is it suitable for heritage buildings?
Yes — its breathability makes it perfect for historic masonry that needs to "breathe" to prevent damage.

Can I paint over it?
Yes — once cured, it can be painted with mineral or lime-based paints.

Do I need a primer?
It depends on the substrate.
Use Aquabond on smooth, non-absorbent surfaces (e.g., concrete, painted walls, plasterboard).
Not needed on absorbent masonry (brick, stone, old plaster).

How is it installed?
By hand trowel or spray machine. We recommend professional installation for large projects.

Is it fire-resistant?
Yes — classified as A1 (non-combustible) under EN 13501-1.

Package: 15 kg (33.7 lbs)

Coverage: 2.60 kg/m² (±20%) per cm of thickness.

Per Package: 5.777 m² (62.1 ft²)

For projects requiring over 6 cm (2.36 inches)
thickness, the use of the Polites 140 fiberglass mesh is required

• Brick (natural/painted)
• Cement Board
• Concrete/cement
• Drywall
• Plywood
• Fiberboard
• Hardie Board
• Metal
• Stucco/Plaster
• Stone Veneer
• Tile
• Wood Panelling
• Wood Siding