Cement slurry finishing is the very smooth finishing of a cement-mortar plaster coat, in which cement powder or a cement slurry is worked into the half-dry surface and troweled smooth again. The result is a dense, glossy, cement-rich skin. Historically, the technique was used in farm buildings to create walls that were easy to wash down and keep clean.
Characteristics
- Cement-rich surface — the extra cement produces a hard, closed skin
- Glossy appearance — repeated troweling burnishes the surface
- Washable and hygienic — ideal for dairies, stables and cellars
- Water-resistant — the dense skin sheds water more readily than an open render
Application
The technique is applied to a fresh cement-mortar render that has begun to set but is still workable:
- Apply and level the base render
- When the coat is half-dry, dust on dry cement or brush on a cement slurry
- Trowel the surface repeatedly until it is smooth and glossy
- Allow to cure slowly, keeping it damp to avoid cracking
Where it is used
- Farm and agricultural buildings
- Cellars and food-storage rooms
- Splash zones and skirtings requiring a hard, cleanable finish
Related Terms
- Plaster coat
- Cement mortar
- Base render
- Rendering
- Stucco
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