Opis
Atlas Silicone Render White 25kg – Self-Cleaning Thin Coat Finish
Product Overview
Professional-grade atlas silicone render white 25kg is an advanced thin-coat decorative finish engineered for high-performance External Wall Insulation (EWI) and modern facade systems. Formulated with premium siloxane resins and reinforced with dispersed microfibers, this atlas white silicone render provides an exceptionally durable, crack-resistant "shield" for building envelopes. Specifically designed for the UK’s variable climate, it features high vapour permeability and natural self-cleaning properties, making it the ideal specification for urban areas, coastal zones, and properties surrounded by greenery where algae resistance is critical. This atlas 1.5mm grain size silicone render is optimized for both manual and machine application, ensuring a consistent, professional "spotted" texture.
Key Benefits
- Nanotechnology Self-Cleaning: Advanced siloxane resins reduce surface tension, allowing rainwater to wash away dirt and environmental pollutants.
- Structural Elasticity: Microfiber-reinforced formula compensates for thermal stress and impact, preventing surface cracks and chipping.
- Bio-Protection: Low water absorption combined with a specific acid-alkaline reaction creates a hostile environment for algae and fungi growth.
- High Vapour Permeability: Allows the building fabric to breathe, essential for maintaining healthy, moisture-free internal environments.
- UV & Colour Stability: Utilizing modern pigments and an automated dosing system, the render maintains its brilliant white finish without fading.
- Machine Application Ready: The 1.5mm aggregate version is specifically recommended for use with professional rendering units for maximum site efficiency.
Technical Specifications
| Property | Value |
|---|---|
| Base Material | Siloxane Resin & Mineral Fillers |
| Grain Size | 1.5 mm / 2.0 mm |
| Coverage | Up to 10 m² per 25kg tub (approx. 2.5 kg/m²) |
| Density | Approx. 1.7 kg/dm³ |
| Adhesion to Substrate | Min. 0.35 MPa |
| Vapour Permeability | High (V1 according to EN 15824) |
| Water Absorption | Low (W3 according to EN 15824) |
| Standard Compliance | EN 15824:2017 / BBA Certified Systems |
Application & Compatibility
- Insulation Compatibility: Fully compatible with graphite EPS, XPS, and Mineral Wool insulation boards.
- Substrate Requirements: Can be applied over cementitious basecoats, concrete, and existing well-bonded mineral renders.
- Mandatory Priming: Must be applied over a cured layer of Atlas Cerplast or Ceresit CT16 to ensure suction control and mechanical bonding.
- System Integration: Part of a certified EWI system when used with reinforcement mesh and fibre-enhanced adhesives.
Installation Notes
Substrates must be clean, dry, and primed at least 24 hours prior to rendering. The material should be thoroughly mixed with a low-speed stirrer before use. To avoid visible join lines (lap marks), always work in a "wet-on-wet" manner, ensuring enough labour is present to finish entire elevations in a single continuous operation. In winter conditions or high humidity, the use of the Atlas Eskimo setting accelerator is strongly recommended to protect the fresh render from early rain exposure. Avoid application in direct intense sunlight or high winds to prevent premature drying.
Is This Product Right for Your Project?
- Choose this product if: You require a premium, self-cleaning finish with maximum crack resistance and high breathability for a long-term facade warranty.
- Consider alternatives if: You are working on a very restricted budget in a non-exposed area; in such cases, acrylic renders may offer a more cost-effective textured finish.
Frequently Asked Questions
How much render do I need for a 100m² area?
Based on the standard 1.5mm grain coverage of 2.5kg per m², you will typically require 10 to 11 tubs (25kg each). We always recommend adding 5% for site waste and profile detailing.
Can I apply this render directly onto brickwork?
No. For a professional, crack-free finish, you must first apply a reinforced basecoat layer with mesh. Applying thin-coat silicone render directly to masonry will result in "ghosting" of the brick pattern and eventual failure.
Does this render require painting?
No. This is a through-coloured render. The white pigment is integrated throughout the material, meaning it will never peel or flake like traditional masonry paint.
For a full range of system components, browse our silicone render primers and professional tools. Access the full Technical Data Sheet for detailed mixing ratios and safety information.