What is render texturing?
Render texturing (also called float finishing or scraping) is a plastering technique in which a freshly applied render or plaster coat is worked with a float to create a uniform, granular surface texture. The coarse aggregate particles in the mix are dragged across the surface, producing the characteristic grain pattern.
How does render texturing work?
A coat of render, plaster or decorative finish is applied to the substrate. Once the material begins to stiffen — but has not yet fully set — the surface is worked with a plastic or wooden float in circular motions.
The texture size depends on:
- Aggregate size — coarser aggregate produces a more prominent texture
- Pressure — more pressure gives a finer finish
- Timing — working too early causes smearing, too late causes cracking
Applications
- External facades — textured render is a popular facade finish because it hides dirt and minor imperfections
- Decorative plaster — many decorative plaster systems (such as scraped render or roughcast) work on this principle
- Concrete surfaces — exposed concrete occasionally receives a textured finish
- Renovation — the technique conceals minor irregularities in the substrate
Related terms
- Plaster
- Render
- Float
- Concrete
- Surface treatment
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