Water-Reducing, Plasticising Agent for Cement & Sand Render and Plaster Mixes. Biokil Crown Rendermix is a high-quality plastering additive designed to improve the workability and performance of cement and sand-based render mixes. Acting as both a plasticiser and water-reducing agent, Rendermix produces a smooth, creamy render that is easier to apply, reduces cracking, and enhances adhesion to substrates. Ideal for both internal and external plastering applications.. Key Features & Benefits. Improved Workability: Enhances mix flow, allowing for smoother, easier plaster application.. Water Reduction: Reduces water demand in mixes without compromising performance or coverage.. Minimises Shrinkage: Helps reduce cracking and crazing in the finished render or plaster coat.. Enhanced Adhesion: Promotes better bonding to substrates including brick, block, and concrete.. Compatible with Hand or Machine Application: Suitable for site-mixed and spray-applied renders.. Product Details. Type: Liquid plastering additive and plasticiser. Usage: Internal and external render/plaster applications. Dosage: Approx. 150ml per 25kg cement (follow product label for precise guidance). Packaging: Available in various sizes including 5L and 25L containers. Colour: Brown liquid. Application Instructions. Mixing: Add the required dosage of Rendermix to gauging water before mixing with cement and sand.. Combine Materials: Mix thoroughly until a consistent, workable texture is achieved.. Apply Render: Use standard plastering techniques for hand or machine application.. Cure as Normal: Follow normal curing practices for cementitious renders and plasters.. Limitations. Do not overdose – excessive use may affect set time and strength.. Not recommended for use with gypsum-based plasters.. Health & Safety. Wear suitable protective clothing, gloves, and eye protection. Avoid direct contact with skin and eyes. Refer to the Safety Data Sheet (SDS) before use.
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