How to Use a Venetian Trowel for Smooth Plaster

Quick answer

To use a venetian trowel for smooth plaster, start with the right trowel size and flexibility for your surface, apply thin, even coats using a low angle, and finish with a light, overlapping burnishing pass.

Step-by-step guide

1. Prepare your surface and trowel: Ensure the wall is clean, dry, and primed if needed. Wipe your venetian trowel with a damp cloth to remove dust or residue. A clean blade prevents contamination of the plaster. Check for any dried plaster on the trowel edge before starting.
2. Load the trowel correctly: Use a hawk or a flat board to pick up a small amount of plaster. Spread it evenly across the blade with a putty knife. Avoid overloading — a thin, even layer on the trowel gives you more control. Too much plaster on the trowel leads to drips and uneven application.
3. Apply the first coat at a low angle: Hold the trowel at a 10–15 degree angle to the wall. Use long, overlapping strokes, applying light and even pressure. Work in small sections (about 2–3 feet wide) and blend each pass into the previous one while the plaster is still wet. If the plaster starts to drag, you are applying too much pressure or the trowel angle is too steep.
4. Let the first coat set, then apply the second coat: Wait until the first coat is firm to the touch but not fully dry (usually 10–20 minutes depending on humidity). Apply a second thin coat using the same low-angle technique, this time crossing your strokes (horizontal then vertical) to fill any remaining gaps. Working too soon on a wet coat will lift the plaster; working too late will cause poor adhesion.
5. Burnish for a smooth finish: Once the final coat is firm (not wet), switch to a clean, dry trowel. Hold it flat against the surface and use firm, overlapping circular or straight passes. This compacts the surface and creates a polished sheen. For best results, use a flexible trowel like the Flexible Polished Venetian Trowel. Burnishing too early will smear the plaster; too late and the surface will be too hard to polish.
6. Clean your tools immediately: Rinse the trowel with water and wipe it dry. Dried plaster can scratch your next project. Stainless steel blades are easy to clean but should be dried thoroughly to prevent water spots. Never let plaster dry on the blade — it will create rough edges that ruin subsequent coats.

Tools for the job

• Rhombus Venetian Trowel for Columns: Stainless steel, mirror-polished blade rhombus Venetian trowel for mineral finishes. Special shape for curved areas. Blade thickness: 0.6 mm, size: 240x100 mm. The rhombus shape and 0.6 mm blade make this trowel ideal for polishing and final closing on columns and other curved surfaces where a standard trowel cannot maintain consistent contact.

  

• Flexible Polished Mini Venetian Trowel: Stainless steel, extra flexible mini venetian trowel. Blade thickness: 0.3 mm, size: 40/80 x 100 mm. The extra flexibility and mini size give you maximum control for tight areas, delicate touch-ups, and applying top coat products like waxes without leaving marks.

  

• Flexible Polished Venetian Trowel: Matte stainless steel, extra flexible venetian trowel. Blade thickness: 0.3 mm, size: 240x100 mm. The full-size flexible blade is ideal for applying and burnishing smooth plasters, metallic effects, and decorative concrete on flat walls, providing an even finish with fewer passes.