Diasen Diathonite Acoustix Plus
Product Overview
Main purpose
Noise reduction and sound absorption with additional moisture regulation and thermal benefits.
Use it on
Brick, any type of plaster, concrete, stone, masonry or wood onto external or internal walls, party walls, partition walls and ceilings.
Overview
Diathonite Acoustix Plus is a sound absorbing and insulating plaster, formulated with cork, clay, diatomaceous earth and natural hydraulic lime. It is a biologically pure and environmentally sound plaster used for improving the acoustic performance of building facades and external or internal walls. It can be used to create sound-absorbing acoustic coverings that preventing echo and reduce sound reverberation from hard surfaces.
Features
- A natural acoustic solution
- Thermal benefits
- Copes with undulations and design features
- Fire resistant
- Natural and environment friendly solution
- A host of different applications
Benefits
- The unique natural ingredients result in a sound insulating barrier that performs excellently even at low thicknesses.
- Combines the benefits of thermal insulation with sound insulation, helping to improve the comfort of the building.
- Ideal for round, curved or complex geometric structures.
- With the best fire resistance class A1, it does not burn or emit smoke.
- Natural and stable material offers a life-long solution for acoustic and thermal benefits.
- Its ability to absorb humidity offers an ideal solution for wet areas, such as swimming pools, SPAs and gyms.
Questions
There are currently no questions and answers published for this product
Technical Details
Key Technical Data
Installation Guide
Find an installerBefore You Start
Before installing any internal wall insulation, it is essential to investigate and fix any existing damp or moisture related issues in the wall. Even though our internal wall systems are breathable and provide optimal protection against condensation, persistent damp issues must be resolved first. A wet wall is a cold wall, so preparation to remove or reduce external sources of moisture is key to achieving optimum results.
Once damp issues have been resolved, the wall should be allowed to dry thoroughly and re-assessed for suitability of internal wall insulation.
Any existing gypsum plaster on the internal side of the wall should be removed first to reveal the stone or masonry underneath. This ensures the wall will be fully breathable and allows the Diathonite to work to its full potential. It also provides a reliable key for maximum adhesion of the Diathonite to the wall.
These are the main considerations before commencing any work:
- Is there evidence of moisture in the walls?
- Is there any evidence of condensation, fungus or mould growth on the internal walls?
- Is there a functioning damp proof course (DPC)?
- Is there sufficient ventilation in the property?
- Is the external ground level higher than the floor level inside?
- Are there any structural defects in the external walls?
- Is guttering, flashings and external pipework in good condition?
- Is the external render, pointing or cladding in good condition and providing adequate weather protection?
- Is the external finish suitable for the severity of wind driven rain exposure?
- Are the timber joists embedded in external walls free from infestation and rot?
- Has the building ever been flooded?
- If you chose not to remove existing plaster on the wall, is this plaster fully compatible with the insulation system being used? (Ideally, it would need to be lime-based, any existing gypsum plaster on the internal side of the wall should be removed first)
How to Install

Application by hand:
If no primer is being used, the surface must always be wetted before applying the Acoustix plaster especially in the summer or if the wall is exposed to the sun.
The first layer should be applied by trowel to a depth of 15mm. Subsequent coats can be applied when the plaster appears dryer and has lightened in colour after about 12-24 hours. When building up the thickness with multiple layers, each layer cannot be more than 25mm thick. If the total thickness will exceed 60mm, Polites 140 Reinforcing Mesh should be installed once half the thickness is applied.
When smoothing, do not push or compact the plaster. You must use a straight edge to level and smooth it. This preserves the porosity and optimises its acoustic and thermal performance.
For ceiling applications application by plastering machine is essential. Hand application to ceilings is not recommended.
Application by machine
Please see the datasheet for guidelines on spray application by plastering machine.

Hints and Tips
All application/yield figures quoted are based on application to a smooth level surface.
Follow the recommended guidance given on the Technical Data Sheet and for large projects its best to contact a trained applicator who can machine apply the plaster. This will ensure a more consistent plaster application in a more efficient manner.