Understanding Render
The question we hear almost daily from our customers is, “Which render is the best?” Surprisingly, the answer isn’t straightforward. Each type of render comes with specific features and benefits tailored to different projects. Whether you prioritise performance or want to replicate heritage features, WPS Plastering Contractors works a number of manufacturers to get the right solution for you. Let’s dive in and determine which render is the best when considering all factors.
Render, often referred to as topcoat or topcoat render in the industry, is a type of plaster primarily used for external walls. It’s typically the final layer of material applied to complete the assembly. In some cases, an external sealant might be necessary for weatherproofing.
The composition of most renders is quite similar, comprising sand, water, cement, and lime. Manufacturers introduce additives that enhance specific properties like weather resistance and flexibility. The quality of the sand used is critical, ensuring a smooth and uniform mixture. Additives such as silicone or acrylic fibres play a significant role in improving various aspects of the render.
While some renders come pre-mixed in buckets, others are available as dry mixes. Dry mixes must be combined with clean, potable water and mixed thoroughly to achieve a bubble and lump-free homogeneous mixture.
Silicone and Acrylic Fibres
The namesake of topcoat renders comes from the microscopic silicone and acrylic fibres added during manufacturing. These fibres enhance bonds within the structure, resulting in more robust and flexible finishes for your façade.
Silicones offer remarkable features, including water repellence, rebound resiliency, transparency, durability, and resistance to weather and heat. These qualities make them a reliable choice for various applications.
Acrylic fibres, on the other hand, excel in crack resistance. They chemically bond within the mixture, strengthening overall durability. Research shows that acrylic fibres significantly enhance impact resistance and the deflection capacity of rendering mortars.
Monocouche Scratch Render
Monocouche Render, despite its French name meaning “one coat,” is usually applied in two passes for added strength and durability. It closely mimics stonework and comes in various colours, with water-repellence, breathability, and durability in mind. However, compared to Silicone Render, it may be more susceptible to cracking.
Monocouche Render is low-maintenance and often more cost-effective than silicone products. It can be directly applied to substrates, even if they’re not entirely level.
Mineral Render
Mineral Render falls into the decorative category and can be applied by hand or spray machine. Its compatibility with spray application and quick drying time makes it ideal for winter applications when time on-site is limited. However, Mineral Render needs to be sealed with approved Silicone Paint to be hydrophobic and freeze-proof. Left exposed, it can be vulnerable to lime bloom, which can damage your façade’s appearance.
Treating Under the DPC
The area beneath the DPC (Damp Proof Course) is vital for preventing rising damp and penetrating damp, which can cause structural and well-being issues. By using Mosaic Render it offers both aesthetics and waterproofing for this crucial area. It’s highly durable and resistant to staining and soiling.
Working Closely with Manufacturers
WPS Plastering Contractors Ltd work closely with a number of manufacturers who we trust on their products and service. This ranges from silicone renders, acrylic render, and Monocouche rendering systems.
So, Which Render Is the Best for You?
Ultimately, the choice depends on your specific requirements. Silicone Render offers the best overall performance, boasting unmatched flexibility and breathability. Monocouche Scratch Render replicates traditional stonework beautifully. Mineral and Mosaic Render serve specialized purposes in render-only and external wall insulation systems.
Still unsure about the best render for your home? Contact us today to discuss your needs and find the perfect rendering solution for your project. Our experts are here to assist you in making the right choice for your home’s exterior.
Don’t hesitate to reach out to us at 01636 382824 for a consultation and personalised recommendations. Your dream home is just a call away!
