Can You Tile On Plastered Walls

Can You Tile on Plastered Walls?

Tiling a wall is a popular choice for many homeowners due to its durability, aesthetic appeal, and ease of maintenance. While tiling directly on drywall is not recommended, tiling on plastered walls can be a viable option. However, it is important to understand the factors that determine whether or not you can safely and successfully tile on a plastered wall. This article will delve into the intricacies of tiling on plastered walls, providing insights on the necessary considerations and the step-by-step process.

Understanding Plastered Walls

Plaster is a traditional building material that has been used for centuries to create smooth and durable wall surfaces. It is typically applied over a base layer of lath, which can be made of wood, metal, or other materials. Plaster is composed of a mixture of lime, sand, and water, and it is applied in several coats, with each coat drying and hardening before the next is applied. Once cured, plaster provides a smooth, even surface that is ideal for painting or tiling.

However, it is important to remember that not all plaster is created equal. The type of plaster used, the age of the plaster, and the condition of the wall can all affect its suitability for tiling. For instance, old plaster may be brittle and prone to cracking, while newer plaster may be more porous and susceptible to moisture damage.

Assessing the Suitability of Plastered Walls for Tiling

Before proceeding with tiling on a plastered wall, it is essential to carefully assess its suitability. Here are some important factors to consider:

1. The Type of Plaster

The type of plaster used can considerably impact its suitability for tiling. Some plaster types, like lime plaster, are known for their breathability and flexibility, making them ideal for tiling. Other types, such as gypsum plaster, are less porous and may be prone to moisture problems if not properly prepared for tiling.

2. The Age and Condition of the Plaster

Older plaster may be brittle and prone to cracking, requiring additional support and preparation before tiling. Newer plaster, while often more stable, may still require careful preparation to ensure a solid foundation for the tiles. It is essential to examine the plaster for any signs of cracks, loose sections, or moisture damage. If any defects are found, they must be addressed before tiling.

3. The Wall’s Surface

Plastered walls should be smooth and even for successful tiling. Any unevenness, bumps, or dips can affect the adhesion of the tiles and create an uneven surface. Before tiling, the wall should be thoroughly cleaned, repaired if necessary, and primed to create a suitable surface for tile installation.

4. The Type of Tiles

The type of tiles you choose can also influence the suitability of the wall for tiling. Heavy tiles, such as ceramic or porcelain, may require additional support and preparation to ensure they are securely attached to the plastered wall. Lighter tiles, such as mosaic tiles, are generally easier to install on plastered walls.

Preparing Plastered Walls for Tiling

Once you have assessed the suitability of the plastered wall for tiling, the next step is to prepare the surface properly. This involves several steps:

1. Cleaning the Wall

Begin by thoroughly cleaning the wall to remove any dirt, dust, or debris that might interfere with the adhesion of the tile adhesive. A damp cloth and mild detergent can be used for this purpose. Ensure the wall is completely dry before moving on to the next step.

2. Repairing the Wall

Any cracks, loose sections, or other defects in the plaster should be repaired before tiling. Use a patching compound or plaster to fill in any holes or cracks. Allow the repair material to dry completely before proceeding.

3. Priming the Wall

Priming the wall is essential for creating a smooth and even surface for the tile adhesive to bond to. A primer specially designed for tile installation should be applied to the entire wall. Allow the primer to dry completely before applying the tile adhesive.

Tiling on a Plastered Wall

Once the plastered wall has been properly prepared, you can begin tiling. The process involves several steps:

1. Applying the Tile Adhesive

Apply a thin layer of tile adhesive to the wall using a notched trowel. The size of the notch in the trowel will depend on the size of the tiles being used. Spread the adhesive evenly across the wall, ensuring that it covers the entire area where the tiles will be installed.

2. Installing the Tiles

Carefully position the tiles on the adhesive, pressing them firmly into place. Use spacers to maintain consistent grout lines between the tiles. Ensure the tiles are level and aligned before they set.

3. Grouting the Tiles

Once the adhesive has dried, grout the tiles to fill in the gaps between them. Use a grout float to apply the grout evenly, wiping away any excess grout with a damp sponge. Allow the grout to dry completely before sealing it with a grout sealer.

4. Cleaning and Finishing

After the grout has dried, clean the tiles with a damp cloth to remove any remaining grout residue. You can then apply a sealant to the tiles to protect them from stains and damage.