Plastering over tiles is indeed a possibility, but it is not always recommended or suitable for every situation. The success of this method depends on several factors, including the condition of the existing tiles, the type of tiles, and the desired outcome.
Assessing the condition of the tiles:
Before considering plastering over tiles, it is important to assess their condition. If the tiles are loose, cracked, or severely damaged, it would be advisable to remove them altogether rather than attempting to cover them up. Plastering over damaged tiles will not provide a stable surface and can lead to further issues down the line. However, if the tiles are in good condition, plastering over them may be a viable option.
Tile types and surfaces:
Different tiles have varying surface textures, which can affect the bond between the plaster and the tiles. It is generally easier to plaster over tiles with smoother surfaces, such as ceramic tiles, rather than tiles with uneven textures like natural stone or terracotta tiles. Rough surfaces may prevent the plaster from adhering properly, leading to an unstable finish. Additionally, glossy or non-porous tiles may need to be lightly sanded or etched to create a better bonding surface for the plaster.
Preparing the tiles:
To ensure the plaster adheres well to the tiles, thorough preparation is essential. Start by cleaning the tiles thoroughly, removing any dust, grease, or residues. Using a tile cleaner or degreaser will help to eliminate any substances that might hinder the adhesion process. Next, lightly sand the tiles to create a roughened surface for the plaster to bond with. It may also be necessary to apply a primer or bonding agent to further enhance the bond.
Applying the plaster:
Once the tiles are prepared, you can proceed with applying the plaster. It is recommended to use a specific adhesive or bonding compound designed for plastering over tiles. These products are designed to create a strong bond between the tiles and the plaster. Follow the manufacturer’s instructions for mixing and applying the plaster, ensuring a smooth and even coat. Allow the plaster to dry completely before proceeding with any further steps, such as painting or tiling over the plastered surface.
Considerations and limitations:
While plastering over tiles can be a viable option for some situations, there are a few considerations and limitations to keep in mind. Firstly, the added layer of plaster will increase the thickness of the wall, which may affect the overall aesthetic and functionality of the room. Secondly, plastering over tiles may not be suitable in areas with high moisture or water exposure, such as bathrooms or swimming pool areas. In such cases, it is best to opt for alternative methods, like removing the tiles or using specific water-resistant tile paints or adhesive.Plastering over tiles is indeed possible in certain circumstances, but it is not always recommended or suitable for every situation. If the existing tiles are in good condition and possess smooth surfaces, plastering over them can be a viable option. However, thorough preparation, using the appropriate bonding compounds, and considering the limitations and considerations is crucial for achieving a successful outcome. It is always advisable to consult a professional or seek expert advice before attempting to plaster over tiles to ensure the best results for your specific project.