Siteworx Plaster & Render Fibres - White

These 3mm polypropylene monofilament fibres are specifically created for inclusion in plaster and ...

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Brick SuperstoreSiteworx White Plaster And Render Fibres - 200G Polypropylene
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Product Information

Full details

The Siteworx Plaster & Render Fibres are an essential additive for plasterers, renderers, and DIY enthusiasts looking to enhance the structural integrity of their wall finishes. By incorporating these 3mm polypropylene monofilament fibres into your mix, you can significantly reduce shrinkage and prevent hairline cracking, ensuring a more durable, professional-grade surface. While they provide excellent reinforcement, it is important to note that they must be mixed thoroughly to avoid clumping, which could otherwise affect the smoothness of the final application.

All features

ColourWhite
Model Part NumberSWPF2
BrandSiteworx

Extended Product Information

FAQs

Can I use these fibres in all types of render?

These fibres are designed for most standard plaster and render mixes, but always check the compatibility with your specific brand of render first.

Will these fibres make my walls look hairy?

If mixed correctly and finished properly with a trowel or float, the fibres should be completely embedded within the material and not visible on the surface.

How much of the 200g pack should I use?

Refer to the specific mix ratio provided by your plaster or render manufacturer, as dosage requirements can vary depending on the product density.

Do I need special tools to mix these?

No special tools are required; they can be mixed manually or with a standard paddle mixer used for plaster and mortar.

Are these fibres biodegradable?

The fibres are made from polypropylene, which is a synthetic material chosen for its longevity and durability; it is not biodegradable.

Troubleshooting

Fibres appearing on the surface of the finished render

Ensure the mix is applied with adequate pressure using a float to bury the fibres, or consider a final thin coat of finish plaster without fibres.

Fibres clumping together in the mix

Add the fibres to the dry mix first and stir thoroughly before adding water, or introduce them slowly while using a mechanical mixer.

Pros and Cons

Pros

  • Significantly reduces surface cracking and shrinkage
  • Improves overall structural durability of the finish
  • Compatible with a wide variety of standard plaster and render mixes
  • Lightweight and easy to handle during the mixing process

Cons

  • Requires careful mixing to prevent fiber clumping
  • Not suitable for aesthetic finishes where surface texture must be perfectly smooth
  • Fixed pack size may require multiple packs for very large-scale projects

Setup, Compatibility & Care

To achieve optimal performance, add the fibres to your plaster or render at the mixing stage. Follow the manufacturer's suggested dosage for your specific mix, typically ensuring they are dispersed evenly to avoid visual patches. The fibres are compatible with most cementitious and gypsum-based renders. Store the 200g packs in a cool, dry place away from direct moisture to ensure the fibres remain free-flowing and clump-free. Always wear appropriate PPE, such as a dust mask, when handling dry additives to avoid respiratory irritation.

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