Review Venetian plaster sheen in the room where it will be installed, using daylight and the lights you intend to use after dark. Hold the sample against the proposed wall and look at it from the places where you will normally see it. Keep the accepted physical sample as the applicator’s reference.
DecoPaint’s Venetian plaster is a hand-burnished lime finish with a high sheen and marble-like movement. During the review, judge the reflection as well as the colour. A board that seems restrained in a showroom can show much stronger movement beside a window.
Put the sample in the wall’s position
Mark which way the wall faces and where the lights will sit before comparing finishes. Stand the board upright where the plaster will go. A sample lying flat on a table gives you a different view from one held against the wall.
Check it in diffuse daylight, then with the intended room lights switched on. Pay attention to any light aimed along the surface. A polished area can look calm in softer light and more active under a grazing spotlight.
Use the room’s lighting where it is available. If you have not chosen the lights yet, tell the applicator what remains undecided and agree whether to review the sample again once they are settled.
Look from the entrance and from your seat
Move back to the room entrance, then sit where the sofa or dining chairs will be. Finally, inspect the board close up. A dining feature wall is often seen from across the room; a hallway wall also needs to be judged at arm’s length.
Bring the nearby timber, stone or upholstery samples into the review. Notice which reflections and areas of movement you like from the places where you will normally sit or stand. This gives the applicator a clearer reference than a request for a generally polished finish.
Photographs can help you share the decision with the wider team. Keep the physical board too: camera exposure can make the wall appear flatter or more contrasted than it looks in person.
Compare the amount of trowel movement
Ask the applicator to prepare a restrained version and one with more visible strokes. Compare them in the same position under the same lighting, and discuss which treatment is appropriate for the selected system. Review the sheen and movement together before choosing the reference.
On the approval sheet, write down the sample reference and agreed colour, then describe the sheen and variation you have accepted. Include any proposed protective treatment in the discussion and in the reference being approved. Ask the applicator whether it suits the system and how it changes the appearance.
Avoid relying on a colour code to carry all those decisions. Keep the accepted board with the finish schedule and make sure the team knows which version has been approved. If a sample is revised, identify the replacement clearly.
Check the background and the edges
Arrange a substrate assessment before booking the finish. Mark patch repairs and hairline cracks, along with old coatings and wall-mounted items. A polished finish can draw attention to an uneven background, especially under side light.
Show where the plaster meets joinery or metal trims. Discuss the preparation and the stopping detail with the applicator, including how the sample relates to those junctions. A sample can establish the intended finish while the wall still needs its own assessment.
For a larger room, discuss whether a controlled wall area should be reviewed before application continues around returns or onto adjacent surfaces. Agree where that review will happen and who will accept it.
Take the lighting plan and nearby material samples to a DecoPaint sample review. Identify the proposed wall and the usual viewing positions. Once you have approved the sample, keep it for the applicator and file the written finish reference with the project drawings.