We recently introduced the A1 Easyboard into our range of cement boards. The Easyboard joins our existing offering of the Knauf Aquapanel, which holds a prestigious BBA certificate as part of our silicone render system. Both carrier boards have exceptional benefits that make them suitable for various projects. In this blog, we will discuss what they are and how they stack up: A1 Easyboard vs. Knauf Aquapanel.
What is an A1 Easyboard?
A1 Easyboard is a high-performance magnesium oxide (MgO) board specifically engineered for use in external wall insulation (EWI) systems. As a lightweight, fire-rated board, it’s a go-to solution for projects requiring superior safety, ease of installation, and long-lasting results.
Features of A1 Easyboard
1. Fire Resistance
A1 Easyboard boasts an A1 non-combustible fire rating, the highest fire resistance rating available in construction materials. This makes it an ideal choice for projects where fire safety is a top priority, such as high-rise buildings and areas with strict building regulations.
2. Lightweight Design
One of the standout features of A1 Easyboard is its lightweight composition. Compared to traditional cement boards, A1 Easyboard is much easier to handle and install. This speeds up the installation process, reduces physical strain on workers, and cuts down on transportation costs.
3. Moisture and Mould Resistance
Thanks to its magnesium oxide composition, A1 Easyboard is naturally resistant to moisture, mould, and mildew. This makes it particularly suited for external walls and areas exposed to damp conditions, ensuring the longevity of the EWI system.
4. Impact Resistance
Despite its lightweight nature, A1 Easyboard offers exceptional impact resistance, providing a solid and durable base for renders. This is crucial for maintaining the structural integrity of the façade and preventing cracks or damage from everyday wear and tear.
5. Eco-Friendly Composition
A1 Easyboard is manufactured using sustainable materials and has a low environmental impact. Its magnesium oxide content makes it more environmentally friendly compared to some cement-based boards, aligning with modern sustainability goals in construction.
6. Ease of Workability
A1 Easyboard is easy to cut, drill, and shape, which simplifies installation. It requires standard tools and does not produce the excessive dust often associated with cutting cement-based boards. This makes it a cleaner and safer option on-site.
What is a Knauf Aquapanel?
Knauf AQUAPANEL® is a range of cement-based building boards designed to provide robust, water-resistant solutions for both interior and exterior applications. Engineered to withstand challenging conditions, AQUAPANEL® boards are ideal for environments exposed to moisture, humidity, and varying weather elements.
Features of Knauf AQUAPANEL
- Water Resistance: AQUAPANEL® boards are 100% water-resistant, making them suitable for wet and humid areas such as bathrooms, swimming pools, and exterior facades.
- Mould and Mildew Resistance: Constructed from inorganic materials, these boards resist mould and mildew growth, ensuring longevity and hygiene in damp environments.
- Non-Combustible: Classified as A1 non-combustible according to EN 13501-1, AQUAPANEL® boards enhance fire safety in building designs.
- Durability: With high impact resistance and dimensional stability, AQUAPANEL® boards maintain structural integrity under various conditions.
- Versatility: Suitable for curved constructions with a bending radius of up to 1 metre, allowing for creative architectural designs.
Product variants
- AQUAPANEL® Cement Board Indoor:
- Applications: Ideal for interior walls and ceilings in wet and humid areas, including bathrooms, kitchens, swimming pools, and steam saunas.
- Features: Lightweight at approximately 11 kg/m², easy to cut and install using the score-and-snap method, and supports tiling up to 50 kg/m².
- AQUAPANEL® Cement Board Outdoor:
- Applications: Designed for exterior walls, facades, and ceilings, serving as a substrate for render finishes in ventilated systems, soffits, and exterior ceilings.
- Features: Resistant to weathering effects such as wind, rain, and snow; can be curved for architectural features; supports finishes like slip bricks, natural stone, and exterior tiles up to 40 kg/m².
A1 Easyboard vs Knauf Aquapanel
| Feature | A1 Easyboard | Knauf Aquapanel |
| Fire Resistance | A1 non-combustible | A1 non-combustible |
| Weight | Lightweight, easy to handle | Heavier, requiring more effort |
| Moisture Resistance | Excellent | Superior, waterproof core |
| Impact Resistance | High | Extremely high |
| Ease of Installation | Simple, faster to cut and install | More complex, requires tools |
| Cost | Budget-friendly | Premium pricing |
| Durability | High | Exceptional in harsh climates |
How to apply Silicone Render onto A1 Easyboard and Knauf Aquapanel
Silicone render is a versatile and durable finish, widely used for external wall systems due to its flexibility, weather resistance, and attractive appearance. When applying it to A1 Easyboard or Knauf Aquapanel, it’s essential to follow a meticulous process to ensure a seamless and long-lasting result.
Surface Preparation
Proper surface preparation is the foundation for a successful render application. For A1 Easyboard, start by securing the boards to the substrate with screws. Reinforce all joints with alkali-resistant reinforcing tape to prevent cracks from forming over time. Apply a thin layer of basecoat adhesive over the taped areas to level the surface. Similarly, for Knauf Aquapanel, ensure the boards are firmly attached using the recommended screws, and reinforce the joints with Knauf Aquapanel Joint Tape. Before moving forward, prime the surface with Knauf AQUAPANEL Exterior Primer, which enhances adhesion and prepares the boards for the subsequent layers.
Basecoat Application
The basecoat provides a stable foundation for the silicone render. Mix the basecoat adhesive according to the manufacturer’s guidelines, then apply a thin, even layer (approximately 3–5mm) across the surface using a steel trowel. While the basecoat is still wet, embed alkali-resistant fibreglass mesh, ensuring a minimum overlap of 10cm at all seams for consistent reinforcement. Smooth the surface to cover the mesh fully and create an even base layer. Allow this to dry thoroughly for 24–48 hours before proceeding to the next step.
Priming the Surface
Once the basecoat has dried, apply a silicone render primer to the surface using a roller or brush. This step is crucial for promoting proper adhesion of the render and ensuring a uniform finish. Our Topcoat Primer is tinted to the colour of the finish. Allow the primer to dry completely, which typically takes between 12 and 24 hours, depending on environmental conditions.
Applying Silicone Render
With the surface fully primed, the silicone render is ready to be applied. Thoroughly mix the render according to the manufacturer’s instructions, not diluting it unless specified. Using a stainless steel trowel, apply the render in a thin, even layer, ensuring it corresponds to the grain size of the render (e.g., a 1.5mm render requires a 1.5mm layer). Work systematically in small sections, blending the render seamlessly between areas to avoid visible joins. Once applied, use a plastic float to achieve the desired texture within the open working time of the render.
Curing
Proper curing is essential for the durability of the silicone render. The render will typically dry to the touch within 24 hours, but full curing can take several days, depending on the weather. It’s important to avoid applying the render in extreme temperatures, direct sunlight, or during wet or frosty conditions, as these can cause uneven drying or cracking. Protect the freshly applied render from rain, dust, and debris during the curing process.
