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Diathonite Acoustix+ Sale
High-performance acoustic + thermal plaster for homes, offices, schools, and multi-unit buildings. Natural cork base, LEED-compliant, fire-resistant. Shop now.
From $264.17 CAD
Buy Diathonite Acoustix+ from $264.17 CAD
Natural Acoustic & Thermal Insulating Plaster
Diathonite Acoustix+ is an eco-friendly, high-performance acoustic plaster designed to provide both sound insulation and thermal protection. Made from natural materials like cork, clay, and lime, it offers excellent sound absorption, making it ideal for improving the acoustic comfort of any space. Its breathable composition also regulates humidity, preventing mold and enhancing indoor air quality. This versatile plaster is suitable for a variety of surfaces and is perfect for applications in residential, commercial, and public spaces.
Weight: 20 kg
For additional inquiries, please submit our Contact form.
- Excellent sound insulation and absorption: NRC 0.75
- Provides thermal protection for energy efficiency
- Classified as A1 (non-combustible) under EN 13501-1.
- Eco-friendly, made from natural materials like cork, clay, and lime
- Breathable, helps regulate humidity and prevents mold
- Suitable for various surface types and environments
- Enhances indoor comfort and air quality
- It can be applied on top of old plasters
- Ideal for round, curved or complex geometric structures
- LEED credits: natural and environment friendly solution
Yield: 4.0 kg/m² per cm thickness (±10%), 2.08 lb/ft² per inch thickness (±10%)
Density: 400 kg/m³ (±30%), 24.9 lb/ft³ (±1.87%)
Grain Size: 0 – 3 mm, 0 – 0.11 in
Application Temperature: +5°C to +30°C (+41°F to +95°F)
Workability: 40 min
Thermal Conductivity (λ): 0.075 W/mK (UNI EN 1745, category T1)
Thermal Resistance (R): 0.133 m² K/W for 1 cm thickness (UNI 10355)
Vapour Permeability Coefficient (µ): 4 (UNI EN 1015-19), highly breathable
Compressive Strength: 4.0 N/mm² (EN 998-1, category CS III) / 580.51 psi (EN 998-2, M 2.5)
Minimum Thickness for Application: 1.5 cm / 0.6 in
Maximum Thickness for Each Layer: 3.0 cm / 1.18 in
Maximum Thickness for Ceiling Applications: 2.0 cm / 0.8 in per layer, 3.0 cm / 1.18 in overall
Flexural strength: 1.6 N/mm² | 232.06 psi
Adhesion to brick: 0.252 MPa
Noise reduction coefficient (NRC): 0.75 for 3 cm thickness
Sound absorption class: C
Sound insulation increase: 3 dB vs traditional plaster
Acoustic absorption (600-1500 Hz): α > 70%
Fire reaction: Euroclass A1
Drying time: 10-15 days
Package: Paper Bag
Weight: 20 kg (44 lbs)
What is Diathonite Acoustix+ used for?
It's designed to reduce sound transmission in commercial and multi-unit buildings — ideal for walls and ceilings.
How does it improve acoustics?
The natural cork base absorbs sound waves, reducing both airborne and impact noise.
How thick should it be applied?
Typically 1.5–3 cm, depending on structural and insulation needs. Can be applied in multiple layers.
Can it be used in schools or offices?
Yes — it's perfect for educational and commercial spaces where noise control is critical.
Is it fire-resistant?
Yes — classified as A1 (non-combustible) under EN 13501-1.
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. Professional installation recommended.
Package: 20 kg (44 lbs)
Coverage: 4 kg/m² per cm thickness (±10%) (.082 lbs/ft²) per inch thickness (±10%)
Per Package: 5 m² (53.7 ft²)
Questions? Contact us for answers!



